Tire Size Conversion

Convert metric tire sizes to inches to find tire height, width, sidewall height, circumference and revolutions per mile.

Example: 225/55R16

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R

Tire Section Width
Tire Side
Tire Circumference
Metric Inches
Overall Diameter
Tread Width
Aspect Ratio
Rim Diameter
Sidewall Height
Circumference
Revolutions

Our tire size conversion calculator will help you convert metric tire size to inches to better understand your tire's dimensions.

Tire specifications may vary slightly from the calculations. Specs are based on a properly inflated tire mounted on the measured rim size and NOT installed on the vehicle. Measuring tire specs under the weight of the vehicle will produce slightly different results due to the added load.

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