Free Online Land Area Converter
Convert acres, hectares, bigha, katha, marla, and other land units.
Bigha and katha are not fixed international units. Their size changes by country and often by district. Confirm the local standard before using a land measurement in a contract or valuation.
All equivalents
| Unit | Value | Note |
|---|
Regional standards used
| Region | 1 katha | 1 bigha |
|---|---|---|
| Bangladesh & West Bengal | 720 ft² | 14,400 ft² (20 katha) |
| Uttar Pradesh | 1,361.25 ft² | 27,225 ft² (20 katha) |
| Bihar | 1,361.25 ft² | 27,225 ft² (20 katha) |
| Gujarat | 871.2 ft² | 17,424 ft² (20 katha) |
Other units are treated as standard: 1 acre = 43,560 ft², 1 hectare = 107,639.1 ft², 1 marla = 272.25 ft², 1 kanal = 20 marla, 1 guntha = 1,089 ft², 1 cent = 435.6 ft², and 1 perch = 272.25 ft². Local customary units may still differ.
About the Land Area Converter
Land measurements are unusually regional. An acre is an acre almost everywhere, but a bigha can mean very different amounts of ground depending on whether you are in Bangladesh, Uttar Pradesh, Bihar, or Gujarat. The same is true of the katha, which is usually one twentieth of a bigha but therefore inherits the regional variation. This converter keeps those standards explicit: choose the region first, then enter a value in any supported unit and see every equivalent in one table.
Why regional standards matter
A plot advertised as two bigha can be roughly 0.66 acre under the Bangladesh and West Bengal standard, about 1.25 acres under the Uttar Pradesh and Bihar standard, or about 0.8 acre in Gujarat. Those are not rounding differences; they change the price per acre dramatically. Before comparing listings or drafting a sale deed, confirm which local standard the seller, registrar, and survey documents use. When a document simply says "bigha" without a region, treat the figure as ambiguous.
The units in this converter
Acre, hectare, square meter, square foot, and square yard are standard international or imperial units. Marla, kanal, guntha, cent, and perch are customary South Asian units with widely used standard values, though local practice can vary. One kanal is twenty marla, one guntha is one fortieth of an acre, one cent is one hundredth of an acre, and one perch is the same area as one square rod. Katha and bigha are calculated from the region you select, and the table below the results shows exactly which factor was used.
Using the result responsibly
This tool is a conversion aid, not a legal survey. Land records may use a local unit that is not listed, a different chain, or a historical definition that changed over time. For a transaction, ask for the area in square meters or hectares as well as the local unit, and compare it with the survey plan. Keep the conversion basis in writing with the agreement. The copy button produces a plain-text table you can paste into an email or a note.
Frequently asked questions
How big is one bigha in acres?
Under the Bangladesh and West Bengal standard, 1 bigha is 14,400 ft², about 0.331 acre. In Uttar Pradesh and Bihar it is 27,225 ft², about 0.625 acre. In Gujarat it is 17,424 ft², about 0.4 acre.
Why is katha different from region to region?
Katha is traditionally one twentieth of a bigha, so it changes whenever the local bigha changes. The Bangladesh and West Bengal katha is 720 ft², the Uttar Pradesh and Bihar katha is 1,361.25 ft², and the Gujarat katha is 871.2 ft².
Can I use this for a property purchase?
Use it for a first estimate only. A deed should state the area in a recognized standard unit and reference the official survey. Local definitions can vary within a state, so have the documents checked by a qualified conveyancer or surveyor.