Area Converter (sq ft, m², acres, hectares)
Convert square feet to square metres, square metres to square feet, acres to hectares and more. Type in either box. Advanced adds Indian land units like bigha, marla and kanal, plus batch convert.
Type in either box.
Bigha, marla and kanal change from state to state (and between towns). Check the size your land records use. Gaj, cent and guntha are fixed: 9 sq ft, 435.6 sq ft and 1,089 sq ft.
Conversion tables
| sq ft | m² |
|---|
| m² | sq ft |
|---|
Real-life examples
Tap an example to convert it.
How your area is converted
Your numbers, step by step. Every area unit is a fixed number of square metres.
- 1
Your area
100 sq ft
- 2
Find the factor
1 sq ft =
0.09290304 m² - 3
Do the sum
100 × 0.09290304 =
9.290304 m² - 4
Your answer
9.290304 m²
1 m² = 10.76391 sq ft
Read more: the formula, a worked example, land units and tables
The formula
area in m² = your number × square metres in one of your unit
answer = area in m² ÷ square metres in one of the unit you want
sq ft to m²: m² = sq ft × 0.09290304
m² to sq ft: sq ft = m² × 10.7639104
Worked example
100 square feet in square metres: 100 × 0.09290304 = 9.290304 m², about 9.29 m². Going back, 9.290304 × 10.7639104 = 100 sq ft.
Why 0.09290304? A foot is exactly 0.3048 m, so a square foot is 0.3048 × 0.3048 = 0.09290304 m². Square units always use the length factor squared: a square yard is 0.9144² = 0.83612736 m², which is 3 × 3 = 9 sq ft.
Handy area factors
| 1 of this | Equals |
|---|---|
| Square foot | 0.09290304 m² (exact) = 144 sq in |
| Square metre | 10.7639 sq ft = 1.19599 sq yd |
| Square yard (gaj) | 9 sq ft = 0.83612736 m² (exact) |
| Acre | 43,560 sq ft = 4,046.8564224 m² (exact) |
| Hectare | 10,000 m² = 2.47105 acres |
| Square kilometre | 100 ha = 247.105 acres = 0.386102 sq mi |
| Square mile | 640 acres = 2.589988 km² |
Indian and South Asian land units
These are used for land in India, Pakistan, Nepal and Bangladesh. Some are fixed; others change from state to state, so pick the local size in Advanced. The regional sizes below are the most widely quoted ones, but always check the size your land records office uses before you buy or sell.
| Unit | Size used here | Fixed or regional? |
|---|---|---|
| Gaj | 1 sq yd = 9 sq ft | Fixed |
| Cent | 1/100 acre = 435.6 sq ft | Fixed |
| Guntha | 1/40 acre = 1,089 sq ft | Fixed |
| Marla | 272.25 sq ft (Punjab, Haryana); 225 or 250 sq ft (Pakistan) | Regional |
| Kanal | 20 marla = 5,445 sq ft (with a 272.25 sq ft marla) | Regional |
| Bigha | 27,225 sq ft (Rajasthan, UP, MP pucca); 17,424 (Rajasthan kachha); 14,400 (West Bengal, Assam); 8,712 (Himachal) | Regional |
Good to know
The acre here is the international acre (43,560 sq ft with the international foot). The old US survey acre was about 4 parts in a million bigger, which only matters for very large land surveys. Real estate "carpet area", "built-up area" and "super built-up area" are different measurements of a home, not different units: convert each one separately.
More converters: unit converter (15 kinds of measurement), feet to metres, inches to cm, volume converter, speed converter, miles to km, lbs to kg, oz to grams, Celsius to Fahrenheit, pressure, energy and data storage. To work out the area of a room or plot from its sides, use the area calculator.
Standard factors are exact by definition (international foot, yard and acre, as in NIST SP 811). Regional land unit sizes are commonly quoted values and vary locally; they are not official figures. Checked 11 October 2026.
Common questions
How do I convert square feet to square metres?
Multiply the square feet by 0.09290304. That number is exact, because a foot is exactly 0.3048 m and 0.3048 × 0.3048 = 0.09290304. So 100 sq ft is 9.29 m², and a 1,000 sq ft flat is 92.9 m². For a rough answer in your head, divide the square feet by 10.76.
How many square feet are in a square metre?
One square metre is 10.7639 square feet. To turn square metres into square feet, multiply by 10.7639 (or divide by 0.09290304). So 50 m² is 538.2 sq ft and 100 m² is 1,076.4 sq ft. Type in the right-hand box above to go this way.
How many square feet are in an acre and a hectare?
An acre is exactly 43,560 square feet, which is 4,046.86 m² or 0.4047 hectares. A hectare is 10,000 m² (a square 100 m on each side), which is 2.4711 acres or about 107,639 square feet. Square miles are bigger again: one square mile is 640 acres.
How big is a bigha?
It depends on the state. The pucca bigha used in Rajasthan, Uttar Pradesh and Madhya Pradesh is usually 27,225 sq ft (0.625 acre). In West Bengal and Assam it is about 14,400 sq ft, and in Himachal Pradesh about 8,712 sq ft. Pick your size in Advanced and check the figure your land records use.
What are gaj, marla and kanal?
A gaj is a square yard: 9 sq ft or 0.836 m². In Punjab and Haryana a marla is usually 272.25 sq ft and a kanal is 20 marla, 5,445 sq ft, so 8 kanal make an acre. In Pakistan a marla is often 225 or 250 sq ft, which you can choose in Advanced.
What are cents and guntha?
Both are fixed parts of an acre used for land in India. A cent is one hundredth of an acre: 435.6 sq ft or 40.47 m². A guntha is one fortieth of an acre: 1,089 sq ft or 101.17 m². So 100 cents or 40 guntha make one acre.
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