⚙️ Model Engineer's Toolkit

Spring Calculator

Calculate spring properties including spring rate, load capacity, and deflection.

Spring Type:

Wire Diameter (mm):

Coil Diameter (mm):

Number of Coils (approx):

Applied Load (N):

Spring Characteristics

Spring Rate (k):	-
Deflection:	-
Stored Energy:	-
Mean Coil Diameter:	-
Spring Index (c):	-

Formulas Used

Spring Rate k = (d⁴ × G) / (8 × D³ × n)
Deflection = Load / Spring Rate
Stored Energy = ½ × k × x²
Spring Index (c) = D / d (typically 4-12)
Where: d = wire diameter, D = mean coil diameter, n = coils, G = shear modulus

Note: These calculations are approximate. For precise engineering, consult spring manufacturers or use specialized software.