GitDirt.com Calculators Racing Photos Race Car Setup

Calculate MPH for RPM

Use your tachometer, tire diameter and final drive ratio to determine your miles per hour.


Update the tire diameter and final drive gear ratio boxes as needed and
hit calculate to see result at differant rpm's.
Tire diameter
 Gear Ratio (example:6.50)

1000 rpm mph 4500 rpm mph
1500 rpm mph 5000 rpm mph
2000 rpm mph 5500 rpm mph
2500 rpm mph 6000 rpm mph
3000 rpm mph 6500 rpm mph
3500 rpm mph 7000 rpm mph
4000 rpm mph 7500 rpm mph


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