CowsPatoot's Speed Calculator

This will calculate the speed of your Fiero (or other car) in each gear at a given RPM with each of the available transmissions.

Anything in a text field can be customized for your needs. Enter your custom ratios, or select a pre-programmed transmission from the dropdown menu.

The first speed and RPM listed is where you will start the gear after a selected rpm shift.
The second speed and RPM is where you will end the gear at the selected rpm.

The graph will only update when a checkmark is selected (or de-selected).

Shift RPM
Tire Size (metric)
Tire Diameter (inches)

//

Final drive
1st gear
0 mph @ 0 rpm
2nd gear
0 mph @ 0 rpm
0 mph @ 0 rpm
3rd gear
0 mph @ 0 rpm
0 mph @ 0 rpm
4th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
5th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
6th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
Cruising Speed (final gear)
mph @ 0 rpm
Final drive
1st gear
0 mph @ 0 rpm
2nd gear
0 mph @ 0 rpm
0 mph @ 0 rpm
3rd gear
0 mph @ 0 rpm
0 mph @ 0 rpm
4th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
5th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
6th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
Cruising Speed (final gear)
mph @ 0 rpm
Final drive
1st gear
0 mph @ 0 rpm
2nd gear
0 mph @ 0 rpm
0 mph @ 0 rpm
3rd gear
0 mph @ 0 rpm
0 mph @ 0 rpm
4th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
5th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
6th gear
0 mph @ 0 rpm
0 mph @ 0 rpm
Cruising Speed (final gear)
mph @ 0 rpm