Helical Spring Axial Deflection Calculator

Calculate the axial deflection $ \delta $ using: $$ \delta = \frac{8 F D^3 n}{G d^4} $$

* Ensure that the force $ F $ is in newtons (N), the mean coil diameter $ D $ and wire diameter $ d $ are in millimeters (mm), the shear modulus $ G $ is in N/m², and the number of active coils $ n $ is unitless.

Step 1: Enter Parameters

Force, $ F $ (N):

e.g., 100 N

Mean Coil Diameter, $ D $ (mm):

e.g., 50 mm

Number of Active Coils, $ n $:

e.g., 10 coils

Shear Modulus, $ G $ (N/m²):

e.g., 80 GPa = 80000000000 N/m²

Wire Diameter, $ d $ (mm):

e.g., 5 mm

Step 1: Enter Parameters

Calculated Axial Deflection