Home & Construction calculators
Estimate materials, utility usage, and measurements before you start a project. This hub lists only calculators in the deliberately curated public core.
Concrete Calculator
Estimate concrete for slabs, columns, walls, footings, and stairs. Add multiple sections, bag counts, waste, and ready-mix cost.
Paint Calculator
Estimate paint for walls and ceilings, subtract doors and windows, and total gallons, quarts, and project cost across multiple rooms.
Roof Replacement Budget Calculator
Estimate roof replacement cost by square footage, material (asphalt, metal, tile), and pitch complexity to size a sinking fund.
HVAC Replacement Cost Calculator
Estimate HVAC replacement cost from tonnage, SEER rating, and installation complexity for central air or heat pump systems.
ADU Cost Calculator
Accessory Dwelling Unit (ADU) construction cost — detached, attached, or garage-conversion — by sqft and scope.