Enter the top spring rate (N/m) and the bottom spring rate (N/m) into the Dual Spring Rate Calculator. The calculator will evaluate the Dual Spring Rate.

## Dual Spring Rate Formula

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

DSR = (T*B) / (T+B)
• Where DSR is the Dual Spring Rate (N/m)
• T is the top spring rate (N/m)
• B is the bottom spring rate (N/m)

To calculate the duel spring rate, divide the product of the top spring rate and bottom spring rate by the sum of these two rates.

## How to Calculate Dual Spring Rate?

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

Example Problem #1:

1. First, determine the top spring rate (N/m).
• The top spring rate (N/m) is given as: 5.
2. Next, determine the bottom spring rate (N/m).
• The bottom spring rate (N/m) is provided as: 10.
3. Finally, calculate the Dual Spring Rate using the equation above:

DSR = (T*B) / (T+B)

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

DSR = (5*10) / (5+10) = 3.33 (N/m)

Example Problem #2:

For this problem, the variables required are provided below:

top spring rate (N/m) = 6

bottom spring rate (N/m) = 8