# 6 Best Free Online Gibbs Free Energy Calculator Websites

Here is a list of the best free **online Gibbs Free Energy Calculator websites**. Gibbs Free Energy is a thermodynamic potential that combines enthalpy and entropy. It is used to predict whether a reaction will be spontaneous or not at constant temperature and pressure. Gibbs Free Energy is measured in joules (J) or kilojoules (kJ). The following formula is used to calculate Gibbs Free Energy:

ΔG = ΔH – TΔS

where ΔH is the change in enthalpy, ΔS is the change in entropy, and T is the temperature in Kelvin.

This post covers 6 websites that you can use to calculate Gibbs Free Energy online. These websites feature dedicated calculators that let you determine the Gibbs’ Free Energy of any chemical reaction. You can simply provide the enthalpy change, entropy change, and temperature to perform the calculation. Some of the calculators can perform reverse calculations. This allows you to calculate any missing parameter when the energy is given. You can explore the post and use any of these calculators to calculate Gibbs Free Energy and estimate whether or not a reaction can happen spontaneously.

### My Favorite Online Gibbs Free Energy Calculator

*CalculatorAtoZ.com* is my favorite website on this list to calculate Gibbs Free Energy online. This calculator supports various measurement units for all the parameters involved in the calculation. That means you can directly add your values with any unit without any prior conversion. It also shows calculation steps where you can see how the calculation is performed step-by-step from formula to solution.

You can check out our other lists of the best free Online Activation Energy Calculator Websites, Online Earthquake Energy Calculator Websites, and Online VSWR Calculator Websites.

### Overview Table:

Name | Chage unit | Reverse calculation | Calculation Steps |
---|---|---|---|

CalculatorAtoZ.com | ✓ | x | ✓ |

OmniCalculator.com | ✓ | ✓ | x |

Calistry.org | ✓ | ✓ | x |

CalcTool.org | ✓ | ✓ | x |

TopOnlineTool.com | ✓ | ✓ | x |

Wee.tools | x | x | x |

## CalculatorAtoZ.com

**CalculatorAtoZ.com** is a website that provides a variety of online calculators for different purposes. The calculators on the site cover a wide range of topics, including math, finance, health, and physics. The website features a Gibbs Free Energy Calculator. This calculator has four total parameters including Enthalpy, temperature, Entropy, and Gibbs Free Energy. You have to add the first three parameters to get the Gibbs Free Energy. The calculator supports multiple measurement units for these parameters. You can select the units as per your data and run the calculation to get the result. This calculator also covers the steps of calculation. You can expand the steps and view how the calculation is performed step by step including the formula used for the calculation.

### How to calculate Gibbs Free Energy online on CalculatorAtoZ.com?

- Head over to this Rate of Effusion Calculator using the direct link given below.
- Enter the Enthalpy, temperature, and Entropy in the respective fields of the calculator.
- Then click the Calculate button to get the Gibbs Free Energy.

## OmniCalculator.com

**OmniCalculator.com** is a website that provides a large collection of online calculators for various purposes. The calculators on the site cover a wide range of topics, including math, physics, chemistry, finance, health, and engineering. It has a Gibbs Free Energy Calculator that lets you calculate the Change in Gibbs free energy, Change in enthalpy, Change in entropy, and Temperature (in Kelvin). The calculator has these four parameters with an option to change the unit for each parameter. You can add any three parameters to calculate the fourth one. For Gibbs Free Energy, you can add the Change in enthalpy, Change in entropy, and Temperature. If you know Gibbs Free Energy then you can use the calculator to find any of the other missing parameters.

### How to calculate Gibbs Free Energy online on OmniCalculator.c0m?

- Use the direct link given below to open this calculator in your browser.
- Enter the Change in enthalpy, Change in entropy, and Temperature (in Kelvin) into the respective fields.
- This gets you the Gibbs Free Energy instantly.

## Calistry.org

**Calistry.org** provides a collection of online calculators and tools for chemistry and physics. The site covers a wide range of topics, including thermodynamics, kinetics, electrochemistry, and quantum mechanics. It has a Gibbs Free Energy Calculator that you can use to estimate whether or not a reaction can happen spontaneously. The calculator has input sections for all three parameters along with the option to select the unit for each. Based on what you have to calculate from the ΔGo (Standard Free Energy Change), K_{eq} (Equilibrium Constant), and T (Temperature), you can add the two values into the respective fields. As soon as you do that, it calculates the missing value and shows that in its respective fields. This way, you can use this calculator to calculate the Gibbs Free Energy or ΔGo (Standard Free Energy Change.

### How to calculate Gibbs Free Energy online on Calistry.org?

- Use the link given below to access this online calculator.
- Add the Equilibrium Constant and Temperature into the calculator.
- This gets you the Gibbs Free Energy in the equation.

## CalcTool.org

**CalcTool.org** is another free website that features a collection of calculators. It covers a wide catalog of calculators covering math, physics, chemistry, finance, health, engineering, day-to-day tasks, and more. It has a Gibbs Free Energy Calculator that you can use to determine the Gibbs Free Energy of any reaction. The calculator required you to provide the Change in enthalpy (ΔH), Change in entropy (ΔS), and Temperature (T). As soon as you add those values, it instantly gives the Change in Gibbs free energy (ΔG) in the respective field. The calculator features various measurement units for all four parameters. You can easily change the unit of any or all parameters as per your data and perform the calculation without an issue.

### How to calculate Gibbs Free Energy online on CalcTool.org?

- Follow the link given below to open this calculator directly.
- Add the Change in enthalpy, Change in entropy, and Temperature into the calculator.
- When you do that it calculates the Gibbs Free Energy instantly.

## TopOnlineTool.com

**TopOnlineTool.com** offers a collection of free online calculators and converters for various purposes, making complex calculations easy and convenient. The website features a Gibbs Free Energy Calculator that can help you understand chemical reactions better. The calculator has three input parameters covering Enthalpy change (ΔH), Entropy change (ΔS), and Temperature (T). Alongside the parameters, you get a dropdown option where you can change the measurement unit of each parameter. You can choose the unit as per your data and skip any conversion. Then you can simply add the values into the calculator and determine the Gibbs Free Energy.

### How to calculate Gibbs Free Energy online on TopOnlineTool.com?

- Head over to this online calculator using the link given below.
- Add the values of Enthaply change, Entropy change, and Temperature.
- Then click the Calculate button to get the Gibbs Free Energy.

## Wee.tools

**Wee.tools** is a website that provides a variety of free online web tools for different purposes. Some of the tools available on the website include health calculators for tracking vital health metrics like BMI, calorie intake, and heart health. The Gibbs Energy Calculator on the website allows users to calculate the Gibbs free energy change (ΔG) for a given chemical reaction or process. The calculator requires the Enthalpy change (ΔH), Entropy change (ΔS), and Temperature (T). The measurement unit for each parameter is fixed and you have to add your data in the respective units only. As you add the required data into the calculator, it determines the Gibbs Free Energy and shows that in the output box on the right side of the screen.

### How to calculate Gibbs Free Energy online on Wee.tools?

- Use the link given below to access this calculator directly.
- Add the values of Enthalpy change (ΔH), Entropy change (ΔS), and Temperature (T).
- This gets you the Gibbs Free Energy in the Output box.

## Frequently Asked Questions

Gibbs Free Energy, denoted as G, is a thermodynamic potential that combines enthalpy and entropy to predict whether a reaction will be spontaneous or not at constant temperature and pressure.

If ΔG is negative, the process is spontaneous; if positive, it's non-spontaneous. Zero indicates equilibrium.

A negative ΔG suggests that a reaction is spontaneous and can occur without external influence.

ΔG = ΔH - TΔS, where ΔH is the change in enthalpy, ΔS is the change in entropy, and T is the temperature in Kelvin.

Gibbs Free Energy is measured in joules (J) or kilojoules (kJ).

Entropy represents the disorder of a system. A positive ΔS contributes to spontaneity.

No, Gibbs Free Energy can only be negative at temperatures where ΔH is less than TΔS.

No, Gibbs Free Energy is not directly affected by changes in pressure at constant temperature.

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