Garage Door Spring Size Calculator

Accuracy & adjustments

This calculator uses 2025 U.S. average inputs and should land within ±20 %. Adjust default figures for local precision.

Overview

Correct torsion spring spec prevents door imbalance and premature failure.

How to Use

Measure door weight and height; calculator approximates IPPT and wire gauge.

Frequently Asked Questions

• Why IPPT? It represents torque needed per turn.
• Is this exact? ±20 %—verify with supplier.
• Can I DIY? High tension—professional install advised.