How it works
A walkthrough, end to end.
- 1
Enter length and width.
- 2
Pick units: feet, meters, or yards.
- 3
See the area in square feet, square meters, and square yards.
Reference
Rectangular area
For irregular rooms, divide into rectangles, compute each area, and sum.
Use cases
What you can do with this.
Flooring estimates
Compute sq ft for hardwood, carpet, or tile.
Painting estimates
Multiply wall area to size paint quantity.
Property listings
Verify listed sq ft.
HVAC sizing
Many BTU calculators expect sq ft input.
Lot sizes
Convert acres to sq ft (43,560 sq ft per acre).
Office space
Plan layouts and per-person sq ft.
Rent comparison
Calculate cost per sq ft.
Square footage 2026 — what's current
Foundational; calculator wins for instant unit conversion.
FAQ
Frequently asked.
Split into rectangles and add the areas. Or use the area calculator for triangles and circles.
1 acre = 43,560 sq ft = 4,046.86 sq m.
No. Calculations run in your browser.
For volume use the volume calculator (length × width × height).