Every free calculator on GarageCalculator.com in one place. Each one uses 2026 national-average prices, lets you adjust for your region, and breaks the total into line items you can print or email.
Build a garage
Price a new garage, addition or outbuilding from the slab up.
Garage Cost CalculatorDetached garage cost by size, materials and finishes.Open calculator →
Garage Addition CostAttached garage addition prices by size and features.Open calculator →
Pole Barn CostKit, shell and turnkey pole barn prices per square foot.Open calculator →
Carport CostNew carports, plus converting a carport into a garage.Open calculator →
Concrete Slab CostSlab cost per square foot, cubic yards and bags.Open calculator →
ADU Construction CostDetached ADU and apartment-over-garage costs.Open calculator →
Septic System CostSeptic tank and drain field prices for a new build or ADU.Open calculator →
Garage Loan CalculatorMonthly payments and financing options for your project.Open calculator →
Garage doors
Compare door, opener and repair prices before you call an installer.
Upgrades and improvements
Finish, power, heat and protect the garage you already have.
Garage Insulation CostWalls, ceiling and door insulation, DIY or pro.Open calculator →
Garage Heater SizeBTUs needed, heater cost and monthly running cost.Open calculator →
EV Charger Installation CostLevel 1 and Level 2 charger, wiring and panel costs.Open calculator →
Garage Floor Epoxy CostEpoxy, polyaspartic and flake floor coating prices.Open calculator →
Garage Roof Replacement CostShingle, metal and flat roof replacement prices.Open calculator →
Garage Conversion CostTurn a garage into a bedroom, office or living space.Open calculator →
Driveway CostConcrete, asphalt, gravel and paver driveway prices.Open calculator →
Pricing across all calculators was last updated October 2026. Prices vary by region and contractor; always get written quotes.