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Belt Length Calculator
Work out the correct belt length for your electric skateboard drivetrain. Select your motor pulley size, wheel pulley size, the distance between them, and your motor mount's adjustment range — the calculator gives you the belt length in millimetres.
Quick preset
Motor Pulley Teeth
Count the teeth on your motor pulley, or check the number printed on it.
Wheel Pulley Teeth
Count the teeth on your wheel pulley.
Center-to-Center Distance (mm)
Measure from the centre of your motor pulley axle to the centre of your wheel pulley axle.
Adjustment Travel (mm)
Total range your motor mount can slide to tension the belt.
Show exact values (not rounded to 5mm)
Recommended Belt Length
— mm