All Calculators

Every free area and material calculator on Square Feet Calculator, organized by what you're trying to measure.

Area Calculators

Measure square footage for any space — start here when you only have length and width.

Calculate the square footage of any rectangular space using feet or meters.

Measure room dimensions and get instant area for floors, paint, and HVAC.

Estimate exactly how much flooring, paint, tile, carpet, or wallpaper your project needs.

Estimate flooring material needed with industry-standard waste percentages.

Calculate how many gallons of paint you need based on wall area and coats.

Compute total tiles, boxes, and waste for floor or wall tile projects.

Calculate carpet square footage and yards including seam and pile allowance.

Calculate wall area and the number of wallpaper rolls needed for a room.

Estimate cubic yards of concrete needed for a slab, patio, or driveway.

Plan concrete, roofing, lawns, and decks with the right square footage and material counts.

Estimate roof area in squares including pitch multiplier for sloped roofs.

Calculate lawn or yard area for seed, sod, fertilizer, or sprinkler planning.

Calculate deck area and the number of boards required for the build.

Switch between square feet, meters, yards, acres, and hectares — instantly.

Convert between square feet, square meters, square yards, acres, and hectares.