Gear Speed Table Calculator

Inputs

Target engine RPM (n)

Engine speed used to calculate speed in each gear.

rpm

Tire diameter (D)

Loaded or calculated tire diameter.

Final drive ratio

Axle, differential or final-drive ratio.

Transfer ratio

Transfer-case or additional reduction ratio. Use 1 if none.

1st gear ratio

2nd gear ratio

3rd gear ratio

4th gear ratio

5th gear ratio

6th gear ratio

Default result

1st gear speed

61.98km/h

Speed = wheel RPM * tire circumference.

Also computed

2nd gear speed103.3km/h

3rd gear speed149.6km/h

4th gear speed216.9km/h

5th gear speed271.2km/h

6th gear speed344.3km/h

1st overall ratio13.06

Method notes 3 notes

Overall ratio = transmission gear ratio * final drive * transfer ratio.
Wheel RPM = engine RPM / overall ratio. Vehicle speed follows from tire circumference.
Use loaded tire diameter for best road-speed agreement. Converter slip, clutch slip, tire growth and rev limiter tolerance are not included.