Area Converter
Area conversions matter any time you are buying property, laying flooring, ordering paint or turf, or reading a plot of land: listings in the US quote square feet and acres, while most of the world uses square metres and hectares. Because area is length squared, the conversion factor is the length factor squared — a mistake many people make by applying the linear factor. This converter uses exact definitions and shows the factor so you can sense-check any answer.
How to use the area converter
- Enter the area to convert.
- Choose the unit it is currently in and the unit you need.
- Read the result and the quick conversions to other area units below.
Formula
Every area is converted through the square metre. Result = value × (m² per “from” unit) ÷ (m² per “to” unit). Exact values: 1 ft² = 0.09290304 m² (0.3048², since area scales as length squared), 1 acre = 4,046.8564224 m², 1 hectare = 10,000 m².
Worked examples
A listing in square feet
A 1,500 ft² house is 139.35 m².
Acres and hectares
One acre is 4,046.86 m², or 0.40469 hectares; a 10-hectare farm is 24.711 acres.
The squared factor
One square metre is 10.764 ft², not 3.28 ft² — the linear factor (3.28084 ft per m) must be squared.
Common area conversions
| Conversion | Result |
|---|---|
| 1 m2 | 10.7639 ft2 |
| 1 ft2 | 0.092903 m2 |
| 1 acre | 43,560 ft2 |
| 1 ha | 2.47105 acre |
| 1 mi2 | 640 acre |
| 1 yd2 | 9 ft2 |
Rooms and plots
A 4 m × 3 m room is 12 m², or about 129.2 ft². To work out flooring, add a wastage allowance — the tile calculator does this and converts units automatically. Remember that area scales with the square of length, so doubling a room’s dimensions quadruples its area. See also the unit converter hub.
Practice problems
Try these yourself first, then check your answer. The answers come from the calculator above.
- Convert a 2,400 square-foot home to square metres.
Show answer
2,400 ft2 in m2: 222.967296
- How many hectares is a 25-acre farm?
Show answer
25 acre in ha: 10.11714106
Common mistakes to avoid
- Applying the linear factor (for example 3.28 ft per metre) to an area. It must be squared: 1 m² = 10.7639 ft².
- Confusing square metres with metres squared: “5 m × 5 m” is 25 m², while “5 m²” is just 5 square metres.
- Mixing hectares and acres. A hectare is about 2.47 acres.
Frequently asked questions
How many square feet are in an acre?
An acre is exactly 43,560 square feet.
How many square metres are in a hectare?
Exactly 10,000 m² — a 100 m by 100 m square.
How do I convert square feet to square metres?
Multiply by 0.09290304. For example, 1,000 ft² × 0.09290304 = 92.90 m².
Why is area converted by a squared factor?
Area is length × width, so both lengths convert. 1 foot is 0.3048 m, so 1 ft² is 0.3048² = 0.0929 m².
How big is a square mile?
A square mile is 640 acres, or about 2.59 square kilometres.
Sources and further reading
Reviewed September 26, 2026 by the SolveCalcPro editorial team. Found a mistake? Tell us; see our editorial policy.