Awasome Garage Door Spring Calculator 2023. How do you calculate lift height? Divide the door weight (or half the door weight for dual springs) by the number of springs to calculate the spring.
Get recommendations based on the weight of your garage door. Web garage door spring repair costs an average of $250 for both materials and labor with a typical range between $150 and $350, including replacing two springs. Divide the door weight (or half the door weight for dual springs) by the number of springs to calculate the spring.
