Extension spring calculator

Are you looking for a specific compression or extension spring? Then the Alcomex spring calculator is a swift means to find the right spring.

Legend

Tension springs
dWire diameter
DmMean diameter
DoOutside diameter
LoFree length
LnLength at maximum elongation
fnMaximum elongation
FnSpring force at loaded length
cSpring rate [N/mm]
FoPre-tension [N]

1 kg = 9,80665 Newton

1 N = 0,10197 kg

All dimensions are in millimeters.