Spring Pitch Calculator

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

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Reviewed by Pero Mikić, Physics & Technical Education (Gimnazija Sisak) • Last updated

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 Calculate compression spring pitch and related spacing using either total coil count or active coil count. Results are simplified estimates; for critical designs, verify with drawings, tolerances, and applicable safety standards.
Used for average pitch estimate: pitch ≈ L0 / Nt.
Optional. If provided, we also estimate active-region pitch: pitch-active ≈ (L0 − d·Ne) / Na, where Ne = Nt − Na.
If Active coils is blank, we estimate inactive coils from end type when possible.
Typical approximation: Ls ≈ Nt · d. We compare your input to the estimate if provided.
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What is Spring Pitch Calculator?

Spring Pitch Calculator Find the Pitch of Your Compression or…
Estimate spring pitch find the pitch of your compression or… with ease.

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.

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