Garage Door Spring Sizing

Calculate torsion spring specifications for garage doors

Project Details
Enter your measurements and requirements
Results
Calculated estimates for your project
Wire Size0.207" diameter
Inside Diameter2" ID
Spring Length7.5" (approx)
Required Torque150.0 in-lbs
Number of Turns6.68 turns
Spring Rating (IPPT)22.44 in-lbs/turn
Expected Life Cycles25,000 cycles
⚠️ Safety WarningSpring replacement is dangerous - consider professional help

Additional Information

About This Calculator

Our garage door spring sizing calculator helps determine torsion spring specifications based on your door weight, height, and desired cycle life. Garage door springs counterbalance the door's weight, making it possible to open manually and reducing strain on the opener motor.

The calculator estimates wire size, spring length, and required torque for your specific door. Proper spring sizing is critical - undersized springs wear out quickly and strain openers, while oversized springs can cause the door to open too quickly or not close properly.

This tool helps homeowners understand spring specifications when ordering replacements. However, garage door spring replacement is extremely dangerous due to the high tension involved. We strongly recommend professional installation unless you have proper training and tools.

How to Use This Calculator

Follow these steps to size your garage door springs:

  1. Weigh your door by disconnecting the opener and lifting manually (or estimate)
  2. Measure the door height in inches
  3. Measure the cable drum diameter (typically 4" for residential)
  4. Select your desired spring life cycle (higher = longer lasting)
  5. Review specifications and contact a professional for installation
Frequently Asked Questions

Free Garage Door Spring Calculator - Torsion Spring Sizing | DIYProject.ai