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Garage door tool

Garage Door Opener HP Selector

Estimate the opener power class you need from your door material and size, since heavier and double doors take more lifting force.

Screening estimate only.A professional measurement and an installer quote are authoritative for final door size, opener choice, and installed price.

Screening result

Choose door material and size to see a suggested opener power class.

Fine Print and Sources

Screening estimate only. These tools use only the values you enter and simple planning math. A professional measurement and an installer quote are authoritative for final door size, opener choice, hardware, and installed price.

Heavier doors and double doors need more lifting force. Lighter single doors run well on a roughly 1/2 HP class opener (about 500 N of force), while insulated, wood, carriage, or double doors usually call for a 3/4 HP to 1.25 HP class opener (about 800 to 1200 N). Match the opener to the door weight the manufacturer lists.

  • DASMA: the Door and Access Systems Manufacturers Association publishes residential garage door standards and technical data sheets.