Why you need to do this
In Japan distance and speed are measured in kilometers, so the odometer and speedometer on your imported car will be in kilometers. There probably won’t be a smaller miles scale, similar to how most UK cars have a smaller km scale.
You can have the speedometer and odometer converted to miles – I’ll write a separate post about this.
How to do the calculation
I know Google and many others can do this for you, but here are the numbers needed to convert miles to kilometers and vice versa.
1 mile = 1.609 kilometers.
1 kilometer = 0.621 miles.
So to work out how many miles your imported car has on the clock, divide the odometer reading by 1.609.