How to Use the Garage Door Spring Size Calculator

Step 1: Measure Your Garage Door

Begin by accurately measuring your garage door’s width and height in feet. Use a tape measure to get precise measurements from edge to edge for the width and from the floor to the top of the door for the height.

Step 2: Determine the Door Weight

Weigh your garage door or consult the manufacturer’s specifications to find out its weight in pounds. If you can’t weigh the door, you can estimate based on the door material and size, but for best results, an accurate weight is crucial.

Step 3: Select the Spring Type

Choose the type of spring your garage door uses: torsion or extension. Torsion springs are typically mounted above the door opening, while extension springs run parallel to the horizontal tracks.

Step 4: Enter the Data

Input the measured width, height, and weight into the respective fields of the calculator. Select the appropriate spring type from the dropdown menu.

Step 5: Calculate and Review Results

Click the “Calculate Spring Size” button. The calculator will process the information and display the results, including the recommended spring size, wire size, spring length, and IPPT (Inch Pounds Per Turn).

Step 6: Interpret the Results

Review the calculated specifications. The spring size is given in inch-pounds, which indicates the torque the spring can produce. The wire size represents the thickness of the spring wire, while the spring length shows how long the spring should be. IPPT indicates the force the spring exerts per turn.

Step 7: Consult a Professional

While this calculator provides a good estimate, it’s always recommended to consult with a garage door professional before purchasing or installing springs. They can verify the calculations and ensure the safety of your garage door system.