Compression spring calculator

Find a stock compression spring from your operating point, or design your own spring and check it against EN 13906-1.

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Link parameters for engineers, ERP and AI assistants

Every input can be set in the web address, so a link opens the exact result. Use it to save a search, send it to a colleague or let an AI assistant find a spring for you.

Example · Find a spring

https://axispring.com/en-dk/pages/spring-calculator?L=30&F=50&tol=10&bore=20

Example · Design a spring

https://axispring.com/en-dk/pages/spring-calculator?tab=design&dmat=sh&dd=2&dmode=do&dD=20&dn=6&dl0=50&dl1=40
L, F
Target length L (mm), Target force F (N)
tol
Force tolerance: 5 · 10 · 15 · 20 · 30 (%)
bore, shaft
Bore diameter (max Do), Shaft diameter (min Di) (mm)
l0, d, travel
Free length L0, Wire diameter d, Remaining travel to L1, at least (mm)
mat, stock
carbon · stainless · stock=1
tab=design
dmat (sh · dh · ss), dd (d, mm), dmode (do · dm · di), dD (mm), dn (n), ends (ground · closed), dl0, dl1, dl2 (mm), dyn (1 = dynamically loaded)