Easily find your car’s top speed using our calculator!

◉How to use◉

step1

Please enter numbers in all text boxes from ① to ⑦. The value to be entered is the value written in the specification sheet of the motorcycle or car.

step2

The calculation result will be displayed in ⑧.

①Engine RPM r
[rpm]
②Gear ratio g

③Primary reduction ratio d₁

④Secondary reduction ratio d₂

⑤Wheel diameter x
[inch]
⑥Tire Width ω
[mm]
⑦Tire aspect ratio a
[%]

⑧Vehicle speed v [km/h] =

※If secondaly reduction ratio d₂ exists, enter its value.
If it does not exist, you can leave it at the default value.

ver.1.02
last updated on july.15.2019