16 Best Free Online Tire Size Calculator Websites

Here is a list of best free online tire size calculator websites. A tire size calculator is used to convert the tire code imprinted over tires to understandable tire dimensions. For example, a tire code (265/70R17) will result in Tire Height (31.6 inches), Wheel Size (17 inches), Side Wall Height (7.3 inches), and Tire Circumference (99.3 inches) tire dimensions. Besides this, some websites also show the number of revolutions a tire will do in one mile and kilometer. If you also want to perform the tire size calculation, then check out these online tire size calculator websites.

Some of these tire size calculators can also be used to find out the new tire according to the proposed tire size. Plus, users can also use these websites to compare the tire dimensions of two tires. For the ease of users, some of these websites also highlight all the calculated tire dimensions over a virtual tire graphic. The process to perform the tire size calculation is not too hard. To help out users, I have included the necessary calculation steps in the description of each website.

These websites also offer additional tools that may come in handy. Using additional tools users, users can calculate gear ratio, find bolt patterns, perform GPA calculations, and more. Go through the list to know more about these websites.

My Favorite Online Tire Size Calculator Website:

calculator.net is my favorite website as it shows detailed tire dimensions using the tire code. Plus, it also shows a virtual tire model with marked dimension values.

You can also check out lists of best free Online Inflation Calculator, Online Hydroelectric Power Calculator, and Online Macro Calculator websites.

calculator.net

calculator.net is a free online calculator website that can also be used as an online tire size calculator. This website has a dedicated tire size calculator that quickly converts the tire size code given over a tire to detailed tire dimensions. In addition to that, it also shows a virtual tire with marked dimensions. Users can also use this calculator to find out the dimensions of a tire of any size. Now, follow the below steps.

How to calculate tire size online using calculator.net:

Go to this website and open up the tire size calculator.
After that, enter the tire size code in the input fields for example 256/70R17.
Next, click the Calculate button to view detailed tire dimensions like Tire Height, Wheel Size, Sidewall Height, Tire Width, Tire Circumference, etc.

Additional Features:

On this website, users get a lot of additional online calculators such as Age Calculator, Tim Calculator, GPA Calculator, Height Calculator, IP Subnet Calculator, and more.

Final Thoughts:

It is one of the best free online tire size calculator websites that help users find out the detailed tire dimension using tire code.

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omnicalculator.com

omnicalculator.com is a free online tire size calculator website. Using this website, users can find out the actual tire dimensions using tire code and basic tire parameters printed over tires. It lets users input known tire dimension values in inch, mm, and cm units. To perform the tire size calculation, users need to specify tire width, profile ratio (ratio of height to width), wheel diameter, and tire construction (Radial, Bias Belt, or Diagonal). Now, follow the below steps.

How to calculate tire size online using omnicalculator.com:

Visit this website and open up the tire size calculator.
After that, enter the tire parameters mentioned over each tire like width, profile ratio, wheel diameter, etc.
As soon as you enter the required values, it starts the calculation process and shows the output tire dimensions namely Tire Diameter, Sidewall Height, Circumference, and Tire Revolutions.

Additional Features:

Tire Compare: Use it to compare the dimensions of one tire with another tire and find out the differences between them.

Final Thoughts:

It is a good online tire size calculator website through which users can find out various tire dimension parameters like Circumference, Sidewall height, diameter, etc.

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tiresize.com

tiresize.com is another free online tire size calculator website. This website helps users find out new tires of a different wheel size than existing tires. To do that, it needs the tire code of an existing tire along with new wheel size. After the calculation, it generates a new tire code using which you can find tires for your vehicles. It also suggests tires of different companies which match the tire code calculated by this website. A tire size visualizer is also provided by it that shows a virtual tire according to the generated tire code. Now, check out the below steps.

How to calculate new tire size online using tiresize.com:

Go to this website and access the Tire Size Calculator.
After that, enter the tire size code in the Size section.
Next, specify the new wheel size you want for your vehicle.
Lastly, click on the Calculate button to view the new tire code, tire dimensions, as well as a virtual tire model.

Additional Features:

Tire Size Comparison: Use it to visually and numerically compare the dimensions of two different tires.
Tire Size Chart: It shows various tire dimensions and codes that come for different tire sizes.
Size Tools: It contains multiple online calculators such as Gear Ratio Calculator, Wheel Offset Calculator, Bolt Pattern Finder, and more.

Final Thoughts:

It is another good online tire size calculator website that helps users calculate the tire code for a tire of a different size than previous ones.

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tacomaworld.com

tacomaworld.com is another free online tire size calculator website. This website helps users calculate and compare the dimensions of existing and new tires. To do that, users need to enter the current and new tire dimensions in the form of Width/ Aspect Ratio R Rim Diameter. After performing the calculation, users can view detailed dimensions (diameter, width, circumference, sidewall height, etc.) of both the existing and new tires. Plus, the difference in tire dimension is also described in the form of the percentage difference. Besides this, it also shows a speedometer difference that shows the difference between speedo reading and actual speed after the switch to the new tire. Now, follow the below steps.

How to calculate tire dimension online using tacomaworld.com:

Launch this website using the given link.
After that, enter the current and new tire sizes.
Next, click on the Calculate button to view the detailed dimensions of both tires along with the differences between them.

Final Thoughts:

It is another good online tire size calculator website that anyone can use to calculate and compare the size of two different tires.

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tire-calc.com

tire-calc.com is another free online tire size calculator website. Using this website, users can find out the detailed dimension of a tire using the tire code present on its surface. Plus, it can also be used to compare the dimensions of two tires. I also like its ability to show pictures of tires along with dimensions calculated by this website. Now, check out the below steps.

How to calculate tire dimension online using tire-calc.com:

Visit this website and access the Tires Calculator.
After that, enter the original and new tire size as mentioned over their surfaces.
Next, click the Calculate button to view the detailed tire dimensions like Overall Diameter, Section Width, Circumference, Sidewall Height, etc.

Additional Features:

This website also carries a list of top tire comparisons carrying their dimensions and differences.

Final Thoughts:

It is another good online tire size calculator website that anyone can use to find out detailed dimensions of tires.

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tyresizecalculator.com

tyresizecalculator.com is yet another free online tire size calculator website. This website helps users find out the tire dimensions, diameter, circumference, and revolutions per mile values of a tire. To find out all these values, users just need to enter the tire parameters imprinted over tires like 195/65R15. Besides this, it also offers a tool to compare the dimensions of two tires. Now, follow the below steps.

How to calculate tire dimension online using tyresizecalculator.com:

Go to this website and select the Tire Size Calculator.
After that, enter the tire parameters in the input section.
Now, click on the Calculate Tire Dimensions button to view complete tire dimension details like Rim Diameter, Sidewall Height, Tire Diameter, Aspect Ratio, etc.

Additional Features:

This website also offers information regarding to various tire topics like tires plus sizing, tire pressure, tire depth, and more.

Final Thoughts:

It is another good online tire size calculator website that anyone can use without much hassle.

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wheel-size.com

wheel-size.com is another free online tire size calculator website. This website comes with a Rim & Tire Size Calculator that helps users find out the change in car performance when they put in a tire of a different size. Plus, it works for standard Passenger Cars, SUVs, and Vans. To perform the calculation, users need to specify multiple tires and rim dimensions like Section Width, RIM Diameter, RIM Width, Offset, Aspect Ratio, Fender Clearance, Suspension Clearance, and more. Now, follow the below steps.

How to calculate tire dimension online using wheel-size.com:

Visit this website and choose input tire and rim parameter units (mm, inch, kg, and lb).
After that, enter all the essential values asked by this website.
Next, view the effects of putting in the bigger tire in the form of an increase and decrease of grip on different surface types, fuel consumption, treadwear, cost, weight, etc.

This website also shows the diagrams of suspension, wheel well, and brakes to help users understand the effects of new tires on associated parts.

Additional Feature:

This website also contains articles related to different tire tests.

Final Thoughts:

It is a good online tire size calculator website that helps users find out the effects of bigger tires on their vehicles.

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carid.com

carid.com is the next free online tire size calculator website. Through this website, users can calculate all the dimension parameters of a tire using the basic dimension parameters printed over a tire namely Width, Ratio, and Diameter. After performing the calculation, it shows tire diameter, width, sidewall, circumference, and revs/ km values. It also shows tire graphics highlighting different tire dimension values. Now, follow the below steps.

How to calculate tire size online using carid.com:

Launch this website and choose the Tire Calculator section.
After that, enter the tire width, ratio, and diameter values.
Next, start the calculation process to view all the tire dimensions. along with tire graphics.

Additional Features:

This website also offers a tool to compare the dimensions of two tires side by side.
This calculator also suggests multiple alternate tire sizes that you can select for your vehicle.

Final Thoughts:

It is another capable online tire size calculator website that anyone can use to calculate tire size using printed tire values.

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blocklayer.com

blocklayer.com is another free online tire size calculator website. Using this website, users can calculate the tire diameter and other dimensions using the tire code. Plus, it can also be used to compare the speedometer differences for varying tire sizes. To help users understand different tire sizes, it shows multiple tire graphics with highlighted tire dimension values. Now, follow the below steps.

How to calculate tire size online using blocklayer. com:

Go to this website and choose tire dimension unit (Inch or Millimeter).
After that, enter the printed tire codes in the input section.
Next, click on the Calculate button to view the tire diameter, circumference, etc., values.

Additional Features:

This website also offers additional tools such as Band Saw Calculator, Surface Speed RPM Diameter, Dividing Plate Templates, Pully Calculator, and more.

Final Thoughts:

It is another capable online tire size calculator website that offers all the essential tools to perform tire size calculations.

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errolstyres.co.za

errolstyres.co.za is a free tire size calculator website. This website is mainly used for tire plus sizing calculation. To do that, users need to enter the current and proposed new tire sizes to find and compare the dimensions of both tires. In addition to that, it also shows the difference between overall rolling diameters. Now, follow the below steps.

How to calculate tire size online using errolstyres.co.za:

Go to this website using the provided link.
After that, enter the current and proposed new tire values (Width, Aspect Ratio, and Inch).
Next, click on the Calculate button to view detailed tire dimensions of both existing and new tires such as rolling diameter, sidewall height, circumference, actual speed, revolutions, and more.

Additional Features:

From this website, users can also purchase tires, batteries, wheels, roll bars, and other automotive parts.

Final Thoughts:

It is a simple and easy-to-use online tire size calculator website that helps users find out the dimensions of existing and new proposed tires

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oponeo.co.uk

oponeo.co.uk is another free online tire size calculator website. This website helps users search for alternative true size and find new tires which will be a perfect fit for their car. To perform the alternative tire size calculation, it uses the existing tire parameter as input that contains width, height, and diameter values. After the calculation, it shows multiple tire alternatives in the same rim diameter and alternative tire diameters. Now, follow the below steps.

How to calculate tire size online using oponeo.co.uk:

Visit this website using the given link.
After that, enter the existing tire width height, and diameter values.
Next, click on the Search for alternative true size button.
Lastly, view a good set of alternative tires that you can purchase for your car.

Additional Features:

Tire Size Comparison: Using this tool, users can compare the tire parameters of two different sizes.
Wheels: It helps users look for the right alloy and steel wheels for their vehicles.

Final Thoughts:

It is another good online tire size calculator website that helps users find out alternative tire sizes for their cars.

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tempetyres.com

tempetyres.com is another free online tire size calculator website. Using this website, users can calculate the dimensions of two different tire sizes at a time. After obtaining all the tire size parameters, users can also compare them to find the right tire for their vehicle. Like other similar websites, it also takes three tire parameters as input such as Width, Profile, and Diameter. No, follow the below steps.

How to calculate tire size online using tempetyres.com:

Visit this website and go to the tire size calculator.
After that, enter the basic tire dimension mentioned over tire walls in the original and new tire size section.
Next, click on the Calculate button to view and compare tire dimensions like overall diameter, sidewall height, tread difference, and more.

Additional Features:

This website also comes with an additional wheel fitment calculator and various automotive services.

Final Thoughts:

It is one of the simplest online tire size calculators through which users can obtain the dimensions of two tires at the same time.

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inchcalculator.com

inchcalculator.com is another free online tire size calculator website. It is another good website to quickly find out all the dimensions of a tire using the printed tire code. Some of the dimensions that it shows are Tire Height, Wheel Size, Tire Circumference, and Section Width. Plus, it can show the output tire dimension values in both Imperial and Metric units. Now, follow the below steps.

How to calculate tire size online using inchcalculator.com:

Visit this website and choose the Calculate Tire Size option.
After that, enter the printed tire code.
Next, click on the Calculate button to start the calculation process.
Lastly, view the tire dimensions in detail.

Additional Features:

This website also offers additional tire size comparison, convert size to inches, and convert size to metric tools.

Final Thoughts:

It is another capable online tire size calculator website that anyone can use to find out the detailed dimensions of a tire.

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braidantire.com

braidantire.com is the next free online tire size calculator website. This website is mainly designed to perform the race tire size calculation. Although, users can also use it to perform calculations on standard tire values. To perform the calculation, users just need to enter the basic tire values namely tread width, external diameter, and rim diameter. According to the provided values, it calculates and shows all the tire parameters like sidewall length, radius, diameter, circumference, rev’s/mile, etc. Now, follow the below steps.

How to calculate tire size online using braidantire.com:

Visit this website and enter the tread width, exterior diameter, and rim diameter values.
After that, specify the unit of input parameters MM, CM, and Standard.
Lastly, click on the Calculate button to view all the tire dimension values.

Additional Features:

This website can also be used to purchase new tires for your vehicles.

Final Thoughts:

It is another good online tire size calculator website that anyone can use without much hassle.

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intercotire.com

intercotire.com is another free online tire size calculator website. Through this website, users can perform the metric tire size to US tire size calculations. As the input users need to enter the tire code printed on it. After performing the calculation, it shows the tire diameter, section width, and section height values. It also shows the formula that it uses to perform the calculation. Now, follow the below steps.

How to perform tire size calculation using the intercotire.com:

Visit this website and open up the tire size calculator.
After that, enter the metric tire value that you know.
Next, click on the Calculate button to view the diameter, section width, and height values in US units.

Additional Features:

On this website, users can also view tire and wheel specifications of various vehicles like ATV, UTV, Trailer, and more

Final Thoughts:

It is another good online tire size calculator website through which users can convert metric tire sizes to US tire sizes.

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apps.paa.org

apps.paa.org is the last free online tire size calculator website. Through this website, users can calculate the difference in size variance between the manufacturer’s recommendation and proposed tire sizes. To do that, users need to enter details of both proposed and recommended tire size values namely Tire Width, Aspect Ratio, and Wheel Diameter. Now, follow the below steps.

How to perform the tire size calculation online using apps.app.org:

Visit this website using the given link.
After that, enter the manufacturer’s recommended and proposes tire sizes.
Next, start the calculation process to view the tire diameter of both the tires along with the calculated size variance between tires in inches and percentage.