Construction

Calculate how many bags or cubic yards of concrete you need for slabs, footings, and columns. Includes waste factor. Free concrete calculator.

Calculate how many gallons of paint you need for any room or surface. Accounts for doors, windows, and number of coats. Free paint calculator.

Calculate square footage of rooms, floors, and surfaces. Supports rectangles, circles, triangles, and trapezoids. Add multiple rooms and sum totals.

Calculate how many tiles you need for any room or surface. Enter room dimensions, tile size, and waste factor to get total tiles and square footage needed.

Calculate how much gravel, rock, or aggregate you need for any project. Enter area dimensions and depth to get cubic yards, cubic feet, and tons needed.

Calculate how many cubic yards or bags of mulch you need for your garden or landscape. Enter area and desired depth to get exact mulch quantity needed.

Calculate how many roofing squares, shingles, and materials you need. Enter your roof dimensions and pitch to estimate shingle bundles, felt underlayment

Calculate how many drywall sheets you need for any room. Enter room dimensions, ceiling height, number of doors and windows — get sheet count, screws, and tape.

Calculate how many deck boards and how much lumber you need. Enter deck dimensions, board width, and spacing to get board count, lineal feet, and material cost.

Calculate fence posts, rails, and pickets needed for any fence. Enter fence length, post spacing, picket width, and rails per section to get all materials.

Calculate stair rise, run, number of steps, and stringer length. Enter total rise height to get code-compliant stair dimensions and cut stringer measurements.

Calculate how many BTUs you need to cool a room or house. Enter room size, ceiling height, insulation, climate, and sun exposure to get the right AC size.