Estimate open-belt length from pulley diameters and centre distance.
Transparent calculationFormula and assumptions shown
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Enter your values
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Your result
Belt length1,873.234457mm
FORMULA USEDL = 2C + π(D+d)/2 + (D−d)²/(4C)
METHOD
How this calculation works
The calculator substitutes your values into the stated engineering relationship and evaluates the result using the displayed units. Change any input to recalculate instantly.
Important
This is an idealised engineering calculation. Confirm material properties, loading conditions and applicable design factors before specification or construction.