Free contractor calculator
Square Footage Calculator
Enter a length and width, the number of identical areas and an optional waste allowance, and this calculator returns the total square footage, square yards and square metres, plus material cost if you add a price per square foot. It's the same area geometry JobPlumb's takeoff runs when you trace a room on a real plan.
Your measurements
Result
- Total area
- 120sq ft
- Square yards
- 13.33sq yd
- Square metres
- 11.1m²
How this is calculated
Area
length (ft) × width (ft) × number of areas = square feet
With waste
square feet × (1 + waste %)
Square yards
square feet ÷ 9 (and × 0.0929 for square metres)
Cost
total square feet × price per sq ft
Taking this off a real plan?
JobPlumb measures slabs, walls, roofs and runs straight off your drawings, then prices the job and sends a proposal your client accepts online. Free to start, no install.
See JobPlumb estimatingHow to use it
- 1Enter the length and width of the area in feet.
- 2Set the number of identical areas if you're measuring several the same size.
- 3Add a waste allowance (5 to 10% is common for flooring and tile).
- 4Optionally enter a price per square foot to get the material cost.
Square Footage Calculator, answered
Multiply the length by the width, both in feet: a room 12 ft by 10 ft is 120 square feet. For an L-shaped or irregular space, split it into rectangles, work out each one and add them together.
Measure it off the real plan in JobPlumb.
Free to start. No install, no sales call. Works in any browser.