Spring Rate Calculator
Calculate spring rate (stiffness) for compression coil springs.
k = Gd⁴ / (8D³n)
τ = 8FD / (πd³)
Shear Modulus (G), GPa
Mean Diameter (D), mm
Wire Diameter (d), mm
Active Coils (n)
Calculate
Results
Spring Rate (k)
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Max Stress (τ)
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