How to Use the Square Footage Calculator
Need to find the area of a 12x10 ft rectangular room? Select "Rectangle" from the shape dropdown, enter length 12 and width 10, then hit calculate. You'll see the area is 120 sq ft (or 11.15 sq meters). For a circular garden bed with a 5 ft radius, select "Circle" and enter radius 5 — the area is 78.54 sq ft. For a triangular flower bed with a 10 ft base and 8 ft height, select "Triangle" — you get 40 sq ft. This tool handles all three common shapes, so whether you're measuring a rectangular lawn, a circular patio, or a triangular lot, you get accurate square footage in seconds.
About Square Footage Calculator
Square footage (sq ft) is the standard unit for measuring area in real estate and construction in the US. This calculator supports rectangles, circles, and triangles, converting results to both square feet and square metres.
To convert square feet to square metres, multiply by 0.092903. For irregular shapes, divide the area into smaller regular shapes, calculate each, and sum the results.
When to Use This Calculator
Buying flooring for a room: Know your room's square footage before shopping for carpet, tile, or laminate. A 15x12 ft living room is 180 sq ft. Add 10% for waste and you need 198 sq ft of flooring. Multiply by the per-sq-ft price to budget accurately before you even visit the store.
Listing a home for sale: Real estate listings need accurate square footage. Measure each room, add them together, and you have the total living area. A typical 3-bedroom home with a 200 sq ft living room, 120 sq ft kitchen, and three 120 sq ft bedrooms totals around 680 sq ft before hallways and bathrooms.
Planning a garden or landscaping project: Need to order soil, mulch, or sod? Calculate the area of your garden beds (rectangular, circular, or triangular) and use the result to estimate material volume. A 200 sq ft flower bed needs about 6.2 cubic yards of mulch at 1 inch depth.
How to Interpret Your Results
The Total Area is shown in both square feet and square meters. For real estate, use sq ft. For construction materials sold in metric, use sq m. Remember that square footage is area, not linear measurement — a 12x10 ft room is 120 sq ft, which is different from 120 linear feet. For irregular spaces, divide the area into rectangles, calculate each, and add them together. For oddly shaped rooms, you can get a rough estimate using the rectangle option with the longest length and width.