Land area unit converter: hectare, acre and traditional units of the world
Convert acres, hectares, square metres and feet and the traditional land units of the world (bigha, guntha, marla, mu, rai, tsubo, feddan, dunam, manzana…) all at once, or get the area of a plot from its width × length. Everything runs in your browser.
Pick the unit used in your region (see the table below).
For a rectangular plot. If the sides are different (an irregular plot), use the area from coordinates.
Result
Enter the area above. The result in every unit shows up here right away.
How big each land unit is
Many traditional units change size from one country to another, and sometimes from one region to another. Those marked with * vary: check which value the document or the seller is using.
| Unit | In m² | In hectares | Where it is used |
|---|---|---|---|
| Hectare (ha) | 10 000 | 1 | Worldwide (official) |
| Square metre (m²) | 1.000 | 0.0001 | Worldwide (official) |
| Are (a) | 100 | 0.01 | 1 ha = 100 ares |
| Square kilometre (km²) | 1 000 000 | 100 | 1 km² = 100 ha |
| Acre | 4 047 | 0.404686 | USA, UK, Canada, India, Pakistan, Australia |
| Square foot (ft²) | 0.093 | 0.000009 | USA, UK, India |
| Square yard (yd²) | 0.836 | 0.000084 | USA, UK, India (gaj) |
| Square mile (mi²) | 2 589 988 | 258.998811 | USA, UK |
| Rood (¼ acre) | 1 012 | 0.101171 | UK, Ireland, Sri Lanka |
| Perch / square rod | 25.29 | 0.002529 | UK, Ireland, Sri Lanka |
| Bigha (West Bengal / Assam) * | 1 338 | 0.13378 | West Bengal, Assam, Tripura, Bangladesh |
| Bigha, pucca (Uttar Pradesh / Rajasthan) * | 2 529 | 0.252929 | Uttar Pradesh, Rajasthan |
| Katha (West Bengal) * | 66.89 | 0.006689 | West Bengal, Tripura, Bangladesh |
| Guntha | 101.17 | 0.010117 | Maharashtra, Karnataka, Gujarat, Telangana, Goa |
| Cent / decimal | 40.47 | 0.004047 | Kerala, Tamil Nadu, Andhra Pradesh, Bangladesh |
| Ground | 222.97 | 0.022297 | Tamil Nadu |
| Ankanam | 6.689 | 0.000669 | Andhra Pradesh, Telangana |
| Marla (revenue, 272.25 ft²) * | 25.29 | 0.002529 | Pakistan, Punjab, Haryana |
| Kanal (revenue, 20 marla) * | 505.86 | 0.050586 | Pakistan, Punjab, Haryana |
| Marla (housing societies, 225 ft²) * | 20.90 | 0.00209 | Pakistan (DHA, Bahria Town, CDA) |
| Kanal (housing societies, 4,500 ft²) * | 418.06 | 0.041806 | Pakistan (DHA, Bahria Town, CDA) |
| Ropani | 508.74 | 0.050874 | Nepal (Hills, Kathmandu Valley) |
| Aana | 31.80 | 0.00318 | Nepal (Hills, Kathmandu Valley) |
| Bigha (Nepal) * | 6 773 | 0.677263 | Nepal (Terai) |
| Kattha (Nepal) * | 338.63 | 0.033863 | Nepal (Terai) |
| Mu (市亩) | 666.67 | 0.066667 | China |
| Tsubo / pyeong / ping | 3.306 | 0.000331 | Japan, South Korea, Taiwan |
| Tan (反) | 991.74 | 0.099174 | Japan |
| Jia (甲) | 9 699 | 0.969917 | Taiwan |
| Rai | 1 600 | 0.16 | Thailand |
| Ngan | 400 | 0.04 | Thailand |
| Square wah | 4.000 | 0.0004 | Thailand |
| Sào (North Vietnam) * | 360 | 0.036 | Vietnam (North) |
| Công (South Vietnam) * | 1 000 | 0.1 | Vietnam (South) |
| Bau (Java) * | 7 097 | 0.709652 | Indonesia (Java) |
| Feddan | 4 201 | 0.420083 | Egypt, Sudan |
| Qirat (1/24 feddan) | 175.03 | 0.017503 | Egypt, Sudan |
| Dunam / dönüm (metric) | 1 000 | 0.1 | Turkey, Israel, Jordan, Lebanon, Syria |
| Dunam (Iraq) * | 2 500 | 0.25 | Iraq |
| Donum (Cyprus) * | 1 338 | 0.13378 | Cyprus |
| Morgen (Cape) * | 8 565 | 0.856533 | South Africa (old deeds) |
| Stremma | 1 000 | 0.1 | Greece |
| Sotka (100 m²) | 100 | 0.01 | Russia, Ukraine, Belarus, Kazakhstan |
| Desyatina * | 10 925 | 1.09254 | Russia, Ukraine (historical) |
| Morgen (Prussia) * | 2 553 | 0.255322 | Germany (old deeds) |
| Joch / jitro / hold (cadastral) * | 5 755 | 0.575464 | Austria, Czech Republic, Hungary, Croatia |
| Tønde land * | 5 516 | 0.551623 | Denmark (historical) |
| Tunnland * | 4 937 | 0.493651 | Sweden, Finland (historical) |
| Arpent (Paris) * | 3 419 | 0.341887 | France (historical) |
| Arpent (Quebec) | 3 419 | 0.341889 | Canada (Quebec) |
| Manzana * | 6 987 | 0.698737 | Costa Rica, Guatemala, Honduras, El Salvador |
| Fanegada (Colombia) * | 6 400 | 0.64 | Colombia |
| Tarea | 628.86 | 0.062886 | Dominican Republic |
| Cuerda | 3 930 | 0.39304 | Puerto Rico |
| Caballería (Cuba) * | 134 202 | 13.420206 | Cuba |
Traditional units are for conversation and old documents. In official records and surveys, the area that counts is in hectares or m².
FAQ
How many square metres are in an acre?
1 acre = 4,046.86 m² (43,560 ft², or 4,840 yd²). A hectare is about two and a half acres: 1 ha = 2.471 acres.
How many acres are in a hectare?
1 hectare = 2.4711 acres, and 1 acre = 0.4047 ha. A hectare is a square of 100 × 100 m.
How big is a bigha?
It depends on the region: in West Bengal, Assam and Bangladesh 1 bigha = 1,337.8 m² (14,400 ft², 20 katha); the pucca bigha of Uttar Pradesh and Rajasthan is 2,529.3 m² (27,225 ft², 5/8 acre); in the Nepal Terai 1 bigha = 6,772.6 m². Check which one your document uses.
How many square feet are in a marla and a kanal?
In revenue records 1 marla = 272.25 ft² (25.29 m²) and 1 kanal = 20 marla = 5,445 ft² (505.86 m², 1/8 acre). Many housing societies in Pakistan use a 225 ft² marla and a 4,500 ft² kanal instead.
How big are a mu, a rai and a tsubo?
A Chinese mu = 666.67 m² (1/15 ha). A Thai rai = 1,600 m² (40 × 40 m, = 4 ngan). A Japanese tsubo (Korean pyeong, Taiwanese ping) = 3.3058 m².
What is a feddan?
The feddan, used in Egypt and Sudan, is 4,200.83 m² (about 1.04 acres), divided into 24 qirat of 175.03 m².
Which unit counts in official documents and surveys?
Most countries record land in hectares or square metres (the USA and a few others in acres). Traditional units are useful in conversation and old deeds; to know the real area of a plot it has to be surveyed.