Design Home Springs Overview Design Considerations Spring Buckling Extension Springs Natural Frequency Calculators Overview Spring Force Deformed Length Spring Rate k Force & Stress Range of Rates k Spring Designer Spring Designer Equations Cyclic Loads: Resonance Cyclic Loads: Fatigue Fatigue Equations Resources Bibliography
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 Spring Force If you have a spring on hand and want to know its force for a given displacement, use this calculator. Spring Deflection If you have a spring and want to know the compressed length for a given applied force, use this calculator. Spring Rate k If you need to know the needed spring constant that will give you a desired spring force for a given deformed length, use this calculator.
Enriched Calculators
 Force and Stress This calculator in an extension of the basic Spring Force calculator above, providing the maximum shear stress in the spring along with the force. Range of Rate k If you only have set of design specs, consisting of a range of compressed spring lengths and a range of desired spring forces, use this calculator. It will return a range of spring constants that will meet your design specs. Spring Designer With this calculator, you can start with an idea for a spring (geometry and material data) and calculate all resulting parameters (spring rate, max load, solid height, coil pitch, etc.).
Cyclic Load Calculators
 Spring Resonance Use this calculator to find the first resonant frequency for a spring used in a dynamic loading environment. Spring Fatigue Use this calculator to estimate if a spring used in a dynamic loading enviroment will fail from fatigue stresses.
Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!