CompDX
Belt Length & Pulley
All calculators
Formula
L = 2C + π(D+d)/2 + (D−d)² / 4C
Unit system
Imperial (inches)
Metric (millimetres)
Center distance
in
Large pulley Ø
in
Small pulley Ø
in
Driver RPM
rpm
Belt length
62.02
in
≈ 5.17 ft
Pulley ratio
3.000
Large ÷ small
Driven RPM
583
rpm
Compressor pump RPM
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