Enter the mass of the weight (kg) and the difference in fork length (mm) into the Fork Spring Rate Calculator. The calculator will evaluate the Fork Spring Rate.

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## Fork Spring Rate Formula

The following two example problems outline the steps and information needed to calculate the Fork Spring Rate.

**FSR = M / L**

- Where FSR is the Fork Spring Rate (kg/mm)
- M is the mass of the weight (kg)
- L is the difference in fork length (mm)

## How to Calculate Fork Spring Rate?

The following example problems outline how to calculate Fork Spring Rate.

Example Problem #1:

- First, determine the mass of the weight (kg).
- The mass of the weight (kg) is given as: 30.

- Next, determine the difference in fork length (mm).
- The difference in fork length (mm) is provided as: 5.

- Finally, calculate the Fork Spring Rate using the equation above:

FSR = M / L

The values provided above are inserted into the equation below and computed.

FSR = 30 / 5 = 6.00 (kg/mm)

Example Problem #2:** **

For this problem, the variables required are provided below:

mass of the weight (kg) = 40

difference in fork length (mm) = 3

Test your knowledge using the equation and check your answer with the calculator..

FSR = M / L** = ?**