How to Determine Inner Diameter of Garage Door Springs

Step 1: Measure Inner Diameter

To determine the inner diameter of your garage door spring, start by measuring the inside diameter of the spring coils. Use a caliper or a ruler to measure the distance from the inside edge of one coil to the inside edge of the opposite coil.

Make sure to measure the spring when it is not under tension to ensure accuracy.

Step 2: Convert Measurement

Once you have the measurement in inches, convert it to the nearest standard inner diameter size. The most common inner diameter sizes for garage door springs are:

• 1.75 inches
• 2.00 inches

For example, if your measurement is 2.10 inches, round it down to the nearest standard size, which is 2.00 inches.

Step 3: Verify and Proceed

Double-check your measurements and the determined inner diameter size to ensure accuracy. Once confirmed, you can proceed with selecting the appropriate garage door spring using the inner diameter in our spring calculator.