22 Best Free Online Voltage Divider Calculator Websites

Here is a list of best free online voltage divider calculator websites. A Voltage Divider is a passive electronic circuit that reduces the output voltage based on the values of the resistors it carries. This circuit is used in various applications like Potentiometers, Reading Resistive Sensors, Level Shifting, and more. To calculate the exact output voltage a voltage divider circuit will produce, users need these online calculator websites.

These websites use the Input Voltage and Resistance values (R1 and R2) to find out the output voltage value. Besides this, some of these websites can also be used to find the Resistance and Input voltage of voltage divider circuits. Besides performing the calculation, they also offer voltage resistance calculation formulas along with voltage divider circuit diagrams. In some of these calculators, users can also manually change the SI units of Voltage and Resistance parameters.

For new users, I have included the steps of calculations in the description of each website. On these websites, users can also find additional online tools and calculators such as Ohm’s Law Calculator, MCD to Lumens Converter, BOM Tools, IC Design Tools, etc. Go through the list to know more about these websites.

My Favorite Online Voltage Divider Calculator Website:

circuitdigest.com is my favorite website as it can calculate output voltage and other remaining parameters of a voltage divider circuit.

You can also check out lists of best free Online Voltage Drop Calculator, Online Gravel Calculator, and Online LED Resistor Calculator websites.

Table of Contents:

Features/Website Names	Can Calculate Output Voltage of Voltage Divider Circuit	Can Calculate Resistance of Resistors	Shows Calculation Formulas	Shows Voltage Divider Circuit Diagram
circuitdigest.com	✓	x	✓	✓
ohmslawcalculator.com	✓	✓	✓	✓
allaboutcircuits.com	✓	x	✓	✓
digikey.in	✓	x	✓	✓
omnicalculator.com	✓	x	✓	✓
xarg.org	x	✓	x	✓
learningaboutelectronics.com	✓	x	✓	✓
ti.com	x	✓	x	✓
voltage-disturbance.com	x	x	x	x
daycounter.com	✓	✓	✓	✓
calculatoredge.com	✓	✓	✓	✓
apogeeweb.net	✓	x	✓	✓
everythingpe.com	✓	x	✓	✓
kobee.com	✓	x	✓	✓
electronicsforu.com	✓	x	x	✓
gadgettronicx.com	✓	✓	✓	✓
solderingmind.com	✓	x	✓	✓
rapidtables.com	✓	✓	✓	x
build-electronic-circuits.com	✓	x	✓	✓
allmath.com	✓	x	x	x
trance-cat.com	✓	x	✓	✓
electronics-lab.com	✓	x	✓	✓

circuitdigest.com

circuitdigest.com is a free online voltage divider calculator website. It is a good voltage divider calculator that helps users calculate the output voltage of a voltage divider circuit. Apart from output voltage, it can also be used to calculate input voltage, resistance 1, and resistance 2 values by providing the remaining three values. It also shows a voltage divider circuit diagram on its interface. The formula to calculate the output voltage is also provided by it. Now, check out the below steps.

How to calculate the output voltage of a voltage divider circuit online using circuitdigest.com:

• Go to this website and open up the voltage divider calculator.
• After that, enter the input voltage and resistance (R1 and R2) values.
• Next, specify the unit of resistance from three available ones namely Ohm, Kilo Ohm, and Mega Ohm.
• Finally, click on the Calculate button to start the conversion process.

Additional Features:

• On this website, users can find many other electrical and electronic calculators like LC Tank Circuit Resonance, Resistor Wattage, AC Calculator, Time Constant Calculator, and more.

Final Thoughts:

It is one of the best free online voltage divider calculator websites through which users can calculate all four parameters of a voltage divider circuit.

ohmslawcalculator.com

ohmslawcalculator.com is a free online voltage divider calculator website. This website helps users calculate the output voltage of a voltage divider circuit. It also shows the voltage calculation formula that it uses to perform the calculation. A basic voltage divider circuit diagram is also shown by it. To perform the calculation, it uses Voltage Source, Resistance 1, and Resistance 2 values. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit using ohmslawcalculator.com:

• Visit this website using the given link.
• After that, open up the Voltage Divider Calculator.
• Now, enter the source voltage, resistance 1, and resistance 2 values.
• Now specify the units of resistance ohms, kilohms, and megaohms.
• Finally, click on the Calculate button to view the output voltage value in volts.

Additional Features:

• On this website, users also get additional calculators namely Ohm’s Law Calculator, MCD to Lumens Converter, LED Resistor Calculator, 444 Astable Calculator, and 555 Monostable Calculator.

Final Thoughts:

It is a simple and effective online voltage divider calculator website that can quickly find out the output voltage of a voltage divider circuit.

allaboutcircuits.com

allaboutcircuits.com is another free online voltage divider calculator website. This website lets users quickly calculate the output voltage of a voltage divider circuit carrying two resistors. It also shows the voltage divider circuit diagram along with the formula that it uses to find out the output voltage. It also shows the application of voltage divider circuits and their use. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using allaboutcircuits.com:

• Go to this website using the given link.
• After that, enter the input voltage, Resistance 1, and Resistance 2 values.
• Next, specify resistance SI units.
• Finally, click on the Calculate button to start the calculation process.

Additional Features:

• This website also offers multiple Circuit Calculators, IC Design Tools, BOM Tools, etc., tools.

Final Thoughts:

It is another good online voltage divider calculator website that helps users calculate the output voltage of a voltage divider circuit.

digikey.in

digikey.in is another free online voltage divider calculator website. On this website, users can quickly perform voltage divider calculations to find out the output voltage. To perform the calculation, it only requires three input values namely Input Voltage, Resistance 1, and Resistance 2 values. To help out users, it also shows the calculation formula and voltage divider circuit diagram.

Users can also add a load to the voltage divider circuit to find out the output circuit voltage under a certain load. Besides output circuit voltage, it also calculates and shows the power supplied by the power supply, power delivered to the load resistor, and the percentage of the total power the load receives. Now, follow the below steps.

How to calculate the output voltage of a voltage divider circuit online using digitalkey.in:

• Visit this website and open up the voltage divider circuit.
• Next, enter the three primary input values.
• Finally, view the calculated output voltage under no load.

Users can also calculate the output voltage under a certain load by entering the load resistance.

Additional Features:

• A good set of related calculators are also offered by it like 555 Timer Calculator, LED Series Resistor Calculator, Time Constant Calculator, and more.

Final Thoughts:

It is another capable online voltage divide calculator website that can find out the output voltage of a voltage divider circuit under no load and full load scenarios.

omnicalculator.com

omnicalculator.com is another free online voltage divider calculator circuit. This online calculator not only performs the voltage divider calculations but also explains what is a voltage divider circuit, its use, and the voltage divider calculation formula. Like other similar websites, it also requires three input values to start the calculation namely Input Voltage, Resistance 1, and Resistance 2 values. The SI units of Resistance and input & Output Voltage can be changed by users. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using omnicalculator.com:

• Launch this website and open up the Voltage Divider Calculator section.
• Now, enter the Input Voltage, Resistance 1, and Resistance 2 values.
• Next, specify the SI units of input parameters and output voltage.
• As soon as you enter all the input values, it calculates and shows the output voltage value.

Additional Features:

• This website also comes with additional calculators like Sports Calculators, Math Calculators, Health Calculators, Food Calculators, Sports Calculators, and more.

Final Thoughts:

It is a capable online voltage divider calculator website that also explains what is a voltage divider circuit, the process of calculation, and formulas.

xarg.org

xarg.org is another free online voltage divider calculator website. Through this calculator, users can calculate Resistance 1, Resistance 2, Actual Voltage, Error Voltage, and Power Dissipation values of a voltage divider circuit. To do that, it only uses Input Voltage and Desired Output Voltage values. It also shows a simple voltage divider circuit diagram. Now, follow the below steps.

How to perform voltage divider calculations online using xarg.org:

• Launch this website using the provided link.
• After that, enter the Input Voltage and Desired Output Voltage to find out the values of other components of a circuit.
• In the end,  click on the Calculate button to view Resistance (R1 and R2), Actual Voltage, Error voltage, and Power Dissipation values.

Additional Features:

• On this website, users can browse and use many open-source projects like Caesar Cipher Encryption, Voltage Divider Calculator, Modular Inverse Calculator, SLA Uptime Calculator, and more.

Final Thoughts:

It is another good online voltage divider calculator website through which users can calculate the Resistance and Power Dissipation values based on input voltage and desired output voltage.

learningaboutelectronics.com

learningaboutelectronics.com is another free online voltage divider calculator website. Through this website, users can find out the output voltage of both, standard two-resistor voltage divider circuits and multiple resistor voltage divider circuits. Plus, diagrams and formulas to perform the calculation are also provided by this website. In both cases, users can manually change the SI units of resistors to ohms, kilo ohms, or mega ohms. Now, follow the below steps.

How to perform voltage divider calculations online using learningaboutelectronics.com:

• Visit this website using the given link.
• After that, enter input voltage and resistance values.
• Next, specify the resistance SI unit.
• Finally, click on the Calculate button to view the output voltage.

Additional Features:

• This website covers multiple electronics resources covering Ideal Voltage Source, Ideal Current Source, Resistivity Calculator, Voltage RMS Calculator, etc.

Final Thoughts:

It is another good online voltage divider calculator website that anyone can use to perform voltage divider calculations.

ti.com

ti.com is another free online voltage divider calculator website. This website uses voltage divider calculations to find out the resistor’s voltage (R1 and R2), actual output voltage, and error percentage values. To perform the calculation, it requires input voltage, desired output voltage, resistor sequence (E96 or E24), and Resistor Scale value. It also shows a well-labeled voltage divider circuit diagram. Now, follow the below steps.

How to perform voltage divider calculations online using ti.com:

• Go to this website using the given link.
• After that, enter the input voltage, desired output voltage, resistor sequence, etc., values.
• Next, click on the Calculate button to view the output voltage and error percentage values.

Additional Features:

• On this website, users can browse and purchase various types of electronics and printing products like Comparators, Difference Amplifiers, Fully Differential Amplifiers, Flyback Controllers, and more.

Final Thoughts:

It is another good online voltage divider calculator website that anyone can use to perform voltage divider circuit calculations.

voltage-disturbance.com

voltage-disturbance.com is another free online voltage divider calculator website. Using this website, users can calculate the resistive voltage drop across multiple resistors (up to 5). To perform the calculation, users need to specify input voltage, number of resistors, and resistance value of each resistor. Before starting the calculation process, users can choose one of three available resistance units namely Ohms, Kilo Ohms, and Mega Ohms. Now, follow the below steps.

How to calculate voltage drop across multiple resistors in a voltage divider circuit online using voltage-disturbance.com:

• Visit this website using the given link.
• After that, enter the input voltage, number of resistors, and their values.
• Finally, go to the Results section to view the output voltage drop values across resistors.

Additional Features:

• This website also comes with multiple engineering calculators like Transformer Calculator, Line Reactor Calculator, Power Factor Calculator, Motor Starting Calculator, and more.

Final Thoughts:

It is another good online voltage divider calculator website that anyone can use to calculate the voltage drop across multiple resistors in a voltage divider circuit.

daycounter.com

daycounter.com is yet another free online voltage divider calculator website. Use this online calculator to calculate the output voltage of a voltage divider circuit with two resistors. It also lets users calculate resistance and sum of resistance values. For new users, it also provides the formulas and voltage divider circuit diagram that it uses to conduct the calculation. Now, check out the below steps.

How to calculate voltage drop across multiple resistors online using daycounter.com:

• Go to this website and enter the input voltage value.
• Now, enter R1/R2 ratio and one of three known resistance values (R1, R2, or R1+R2).
• Lastly, click on the Compute button to start the calculation process.

Additional Features:

• Circuits: It contains multiple electronic circuits like Gyrator, Flyback SMPS, LED Indicator for Relay, Level Shifting Buffer, and more.
• Calculators: It offers useful electronic calculators like BJT Cascode Amplifier, JFET Buffer Bias Calculator, Op-Amp Resistor Calculator, NPN Transistor Bias Calculator, and more.

Final Thoughts:

It is another good online voltage divider calculator website that allows users to perform multiple voltage divider calculations.

calculatoredge.com

calculatoredge.com is another free online voltage divider calculator website. This voltage divider calculator uses input voltage and resistance (Ra, and Rb) values to calculate the output voltage values. It also shows a voltage divider circuit diagram as well as the formula that it uses to calculate the output voltage. Now, follow the below steps.

How to calculate the output voltage of a voltage divider circuit online using calculatoredge.com:

• Go to this website and access the voltage divider calculator.
• Now, enter the input voltage, Ra, and Rb values.
• Next, click on the Calculate button to view the output voltage value in volts.

Additional Features:

• This website also carries calculators associated with Electrical, Structural, Maths, Physics, etc., topics.

Final Thoughts:

It is another simple and effective online voltage divider calculator website that anyone can use with ease.

apogeeweb.net

apogeeweb.net is another free online voltage divider calculator website. This website comes with a standard voltage divider calculator that helps users find out the output voltage of a voltage divider circuit. Besides this, it also provides the voltage divider calculation formula and voltage divider circuit diagram. Unlike most other similar websites, it can also calculate the output circuit voltage when the voltage divider circuit is under a load.

This website also answers multiple questions related to voltage dividers like what is a voltage divider, how to select a voltage divider resistor, why a voltage divider is used, etc. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using apogeeweb.net:

• Go to this website and open up the voltage divider calculator.
• After that, enter the input voltage, Resistance R1, and Resistance R2.
• Now, view the calculated voltage in the Voltage Output section.

Additional Features:

• On this website, users can find various information and specifications of electronic components like a Toggle Switch, LEDs, PCB Assembly, and more.

Final Thoughts:

It is another good online voltage divider calculator website that anyone can use without much hassle.

everythingpe.com

everythingpe.com is another free online voltage divider calculator website. It is another straightforward online voltage divider calculator that can accurately calculate the output voltage of a voltage divider circuit. It uses the standard voltage divider circuit configuration that carries two resistors and an input voltage source. It also shows a labeled voltage divider circuit diagram. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using everythingpe.com:

• Launch this website using the provided link.
• After that, enter the Input voltage value in the Volt unit.
• Now, enter the values of both Resistance 1 and Resistance 2 resistors.
• Lastly, click on the Calculate button to start the calculation process.

Additional Features:

• This website also comes with additional online calculators that may come in handy such as Battery Life Calculator, Current Divider Calculator, Diode Current Calculator, Duty Cycle Calculator, and more.

Final Thoughts:

It is another good online voltage divider calculator website that allows users to find out the output voltage of a voltage divider circuit.

kobee.com

kobee.com is another free online voltage divider calculator circuit. This website allows users to perform voltage divider calculations with and without load configurations. In the case of the No Load configuration, it finds out the output voltage of the voltage divider circuit. In the case of Across Load configuration, it calculated multiple parameters namely Output Circuit Voltage, Power Supplied by Power Supply, Power Delivered to Load, and Power Loss Percentage. Now, follow the below steps.

How to perform voltage divider circuit calculation online using kobee.com:

• Go to this website and select either No Load or Across Load configuration.
• In the case of No Load, users need to enter the Input Voltage and Resistance values of Resistance 1 and Resistance 2 resistors.
• If you select the Across Load option, then enter one more additional parameter value named as Load Resistance.
• Lastly, start the calculation to view the output values.

This website also shows both the voltage divider circuits (without load and across load). Plus, it also shows the formulas that it uses to perform the calculations.

Additional Features:

• Calculators: This section contains multiple useful calculators like Voltage Converter Calculator, Op Amp Gain Calculator, Capacitor Conversion Calculator, and more.

Final Thoughts:

It is another capable online voltage divider circuit calculator website as it can perform calculations in no load and across load configurations.

electronicsforu.com

electronicsforu.com is another free online voltage divider calculator circuit. Through this circuit, users can calculate the output voltage of a voltage divider circuit for a given set of resistance values. To perform the calculation, users just need to enter the Input Voltage and Resistance values (R1 and R2). Although, users can change the Resistance SI unit from ohm to kilo ohm or mega ohm unit. Like most other similar websites, it also shows a labeled voltage divider circuit diagram. Now, follow the below steps.

How to perform voltage divider circuit calculation online using electronicsforu.com:

• Visit this website using the given link.
• After that, enter the input voltage, Resistance 1, and Resistance 2 values.
• Next, specify the units of both resistors.
• Lastly, click on the Calculate button to view the output voltage in volts.

Additional Features:

• On this website, users can also explore electronics DIY projects and look for tech trends and updates.

Final Thoughts:

It is another simple-to-use online voltage divider calculator circuit that offers all the essential tools to find out the output voltage.

gadgettronicx.com

gadgettronicx.com is yet another free online voltage divider circuit calculator website. This website comes with a dedicated voltage divider circuit calculator that anyone can use to find out the output voltage of the circuit. It also provides the voltage divider circuit diagram with labels on its interface. Before starting the calculation process, users can choose to change the SI units of input resistance (ohms, kilo ohms, and mega ohms) parameters. Now, follow the below steps.

How to perform voltage divider circuit calculations online using gadgettronicx.com:

• Launch this website and go to the Voltage Divider calculator.
• After that, enter the input voltage, resistance 1, and resistance 2, values.
• Next, specify the units of both resistors.
• Lastly, click on the Calculate button to view the output voltage value.

This website also shows all the formulas that it uses to perform the calculations.

Additional Features:

• On this website, users also get electronic circuit diagrams, circuit projects, electronic tutorials, and electronic quizzes.
• A good set of electronic calculators are also present in it like an Astable multivibrator, RC time calculator, run time calculator, and more.

Final Thoughts:

It is another good online voltage divider circuit calculator that anyone can use without much hassle.

solderingmind.com

solderingmind.com is another free online voltage divider calculator website. It is another good website that allows users to perform voltage divider calculations to find out the output voltage of a voltage divider circuit. It also explains what is a voltage divider circuit along with a circuit diagram. It also shows the formula that it uses to calculate the output voltage. It also highlights the application of a voltage divider circuit. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using solderingmind.com:

• Go to this website and open up the voltage divider calculator section.
• After that, enter the input voltage and resistance values of both resistors.
• Finally, click on the Calculate button to view the output voltage value.

Additional Features:

• This website also offers additional electronic circuits and projects for users like Amplifier Circuits, Arduino Projects, basic Electronics, Battery Charger, and more.

Final Thoughts:

It is another capable online voltage divider calculator website through which users can calculate the output voltage of a voltage divider circuit.

rapidtables.com

rapidtables.com is the next free online voltage divider calculator website. This website uses the standard voltage divider circuit and voltage divider run formula to calculate the output voltage of the circuit. As input, users need to enter the Input Voltage, Resistance 1, and Resistance 2 values. SI units of both Voltage (volts, kilovolts, and millivolts) and Resistance (ohms, kilohms, and megaohms) can be adjusted. Now, check out the below steps.

How to calculate output voltage of a voltage divider circuit online using rapidtables.com:

• Go to this website and enter all three input values namely Input Voltage, Resistance R1, and Resistance R2.
• Next, specify the SI units of both input parameters.
• Now, click on the Calculate button to view the final voltage value.

Additional Features:

• Users can also find many other online electrical calculators on this website like an Amps to Watts Calculator, eV to volts calculator, joules to Volts Calculator, Power Factor Calculator, etc.

Final Thoughts:

It is another good online voltage divider calculator that offers all the essential tools to perform the necessary calculations.

build-electronic-circuits.com

build-electronic-circuits.com is another free online voltage divider calculator website. This website comes with multiple online calculators one of which is a voltage divider calculator. This calculator simply lets users find out the output voltage of a standard voltage divider circuit carrying two resistors of the same or different values and a voltage source. To help new users, it also shows the circuit diagram. Now, follow the below calculation steps.

How to calculate output voltage of a voltage divider circuit online using build-electronic-circuits.com:

• Launch this website using the given link.
• After that, enter the input voltage and values of both resistors (R1 and R2).
• Next, view the calculated output voltage value.

Additional Features:

• Other electronic calculators that it offers are 555 Timer Calculator, Voltage Divider Calculator, Capacitor Value Converter, Resistor Color Code Calculator, etc.

Final Thoughts:

It is a straightforward online voltage divider circuit calculator website that anyone can use to calculate the output voltage of a voltage divider circuit.

allmath.com

allmath.com is another free online voltage divider calculator circuit website. This website comes with a simple voltage divider calculator tool that can calculate the output voltage value. To perform the calculation, it only requires Input Voltage, Resistance (Ra), and Resistance (Rb) values. The process to perform the calculation is also quite simple. Now, follow the below steps.

How to perform voltage divider calculation online using allmath.com:

• Launch this website and access the Voltage Divider Calculator.
• After that, enter all three required input values,
• Next, click on the Calculate button to start the calculation process.

Additional Features:

• This website also comes with maths tools like Metric Converter, Multiplication Table, Math, Glossary, Metric Factors, etc.

Final Thoughts:

It is another good online voltage divider calculator that anyone can use with ease.

trance-cat.com

trance-cat.com is yet another free online voltage divider calculator website. This website offers a dedicated tool to calculate the output voltage of a resistive voltage divider circuit. It also helps out new users understand the concept of a voltage divider circuit by providing them with the correct calculation formula and a voltage divider circuit diagram. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using trace-cat.com:

• Launch this website and enter the R1 and R2 values along with the input voltage value.
• Now, specify the resistor SI units (ohms, kilo ohms, or mega ohms).
• Finally, click on the Calculate button to view the output voltage value.

Additional Features:

• On this website, users can also find other electrical calculators such as Filter Calculators, Rectifier Calculators, Electrical Reactance calculators, RF Calculators, and more.

Final Thoughts:

It is another capable yet simple-to-use online voltage divider calculator.

electronics-lab.com

electronics-lab.com is the last free online voltage divider calculator website. Through its voltage divider calculator, users can find out the output voltage of a voltage divider circuit. Plus, it also shows a detailed circuit diagram along with multiple formulas to calculate output voltage, resistance, and input voltage. Now, follow the below steps.

How to calculate output voltage of a voltage divider circuit online using electronics-lab.com:

• Go to this website and open up the Voltage Divider Calculator.
• After that, enter the input voltage, Resistance R1, and Resistance R2 values.
• In the end, just hit the Calculate button to start the calculation process.

Additional Features:

• Calculators: This section comes with some useful online tools like Battery File Calculator, Ohms Law Calculator, RC Time Constant Calculator, and more.

Final Thoughts:

It is another good online voltage divider calculator that anyone can use to find out the output voltage of a voltage divider circuit.