Measurements Calculators
Square footage and area conversions — the starting point for every estimate.
1 free tool — instant results, no sign-up.
Available calculators
Popular project use cases
- Measuring square footage before any material estimate
- Converting between square feet, yards, meters and acres
- Splitting L-shaped rooms and irregular lots into simple shapes
Choosing the right calculator
- Start every estimate with the Square Footage Calculator — it feeds every other material calculator.
- For irregular shapes, break the area into rectangles or triangles and add the results.
Good to know
Unit conversions: 1 square yard = 9 ft²; 1 square meter ≈ 10.764 ft²; 1 acre = 43,560 ft².
Measurements FAQs
How do I calculate square footage of a room?
Multiply length × width in feet. For an L-shaped room, split it into two rectangles, calculate each, and add them together.
How many square feet is a 12×12 room?
A 12×12 ft room is 144 square feet, or 16 square yards — the starting number for flooring, paint and tile estimates.
Other categories
Concrete & MasonryConcrete volume, bag counts and pavers for slabs, footings and patios.LandscapingMulch, gravel, topsoil and sod for yards, beds and lawns.Interior ProjectsPaint, drywall, flooring and tile for indoor rooms and surfaces.Roofing & ExteriorShingle bundles and squares for roof replacements.Outdoor ProjectsFence and deck board material lists for outdoor builds.