The doors & installation math and money: total installation cost from the door, labor (hours × your $/hr), add-ons and haul-away less any trade-in; replacement cost reusing the existing opening; new-door cost by material with labeled weight and R-value typicals; cost by size from width × height × your $/sq ft; custom and carriage-house cost; a single-vs-double comparison; and panel/section replacement cost. Enter the prices from your own quotes — every result is a planning estimate, not a bid.
Planning estimate: this is a planning estimate from the numbers you enter — not a bid or a contract. Garage-door pricing depends on brand, material, size, hardware and local labor. Get itemized written quotes from licensed, insured garage-door installers before you commit.
Every Doors & Installation tool is calculated server-side — visible immediately — with its formula, a worked example and a reference table, and works on the quantities you measure and the prices you enter from your own quotes. Background reading is in the guides.