Spring Pitch Calculator | Find the Pitch of Your Compression or Extension Spring

Spring Pitch is a term used to describe the distance between corresponding points on adjacent coils of a helical spring, typically measured in inches per coil. In other words, it represents the amount of linear displacement of the spring per one complete revolution around its axis.

Spring Pitch Calculator – Instantly Find the Pitch of Your Compression or Extension Spring

Total Number of Coils (including both active and inactive ends)

Free Length of Spring (uncompressed length, not including hooks or loops) mm inches

Wire Diameter (thickness of the wire used to make the spring) mm inches

Spring Type (affects pitch calculation method) Compression Spring Extension Spring

End Type (some ends are closed and do not contribute to pitch) Open Ends (all coils active) Closed Ends (last coil(s) inactive)

Example Presets:

Standard Compression: 10 coils, 100mm, 2mm wire, closed ends Extension: 12 coils, 4 in, 0.08 in wire, open ends Small Compression: 8 coils, 80mm, 1.5mm wire, open ends Long Extension: 16 coils, 200mm, 2.5mm wire, closed ends Heavy Duty: 20 coils, 10 in, 0.12 in wire, closed ends

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What is Spring Pitch Calculator?

A Spring Pitch Calculator is a tool that calculates the pitch of a helical spring based on its length, diameter, and number of active coils. The spring pitch is the distance between corresponding points on adjacent coils, typically measured in inches per coil.

The formula for calculating spring pitch is:

SP = (L – 3*D) / NA

where:

• SP is the spring pitch (in/coil)
• L is the length of the spring (in)
• D is the diameter of the spring (in)
• NA is the number of active coils in the spring

The spring pitch is an important characteristic of a spring, as it affects the spring’s compression and extension capabilities, as well as its overall strength and stability. It is calculated by subtracting 3 times the diameter of the spring from its length and dividing the result by the number of active coils.

To calculate the spring pitch, follow these steps:

1. Measure the length of the spring in inches and record the value as L.
2. Measure the diameter of the spring in inches and record the value as D.
3. Count the number of active coils in the spring and record the value as NA.
4. Substitute the values of L, D, and NA into the formula: SP = (L – 3*D) / NA
5. Calculate the spring pitch by performing the necessary mathematical operations.
6. Round the result to the desired number of decimal places, typically 2.

The resulting value is the spring pitch, measured in inches per coil.