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Plot Area Converter

Bigha, katha, marla, gunta or cent to sq ft, acre and hectare, using each state's own definition.

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Quick Answer

A bigha is not one size across India. In West Bengal it is 14,400 sq ft (20 katha of 720 sq ft each). Haryana's pre-settlement bigha is 9,075 sq ft. In Rajasthan it is 17,424 or 27,225 sq ft, depending on which jarib chain surveyed the village. Units that come from the acre are the same everywhere: a cent or decimal is 435.6 sq ft and a gunta or guntha is 1,089 sq ft. Pick the unit as your deed or record states it, and the converter gives sq ft, m², gaj, acre and hectare, plus the land-record form for any of nine states.

Figures checked Oct 2026. Source: Directorate of Registration & Stamp Revenue, West Bengal: FAQs, p. 12 (units of land measurement).

14,400 sq ftone bigha in West Bengal
720 sq ftone katha in West Bengal and Jharkhand
435.6 sq ftone cent or decimal, everywhere
1,089 sq ftone gunta or guntha

Part of the system: Buying a plot: check the area, Plan a house construction budget. Steps, checks and a free printable page.

Guides: Measure a plot, Measure a sloping plot, Septic tank location.

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The Formula

Conversion = area in sq ft = area × (sq ft per local unit); then m² = sq ft ÷ 10.7639, gaj = sq ft ÷ 9, acre = sq ft ÷ 43,560, hectare = m² ÷ 10,000

Each local unit is stored as square feet per unit, taken from a government definition (listed under Sources). The mixed form, such as 1 bigha 3 katha 4 chhatak, fills the largest unit first and carries the remainder down.

One bigha, four sizesHaryana before settlement 9,075 sq ft, West Bengal 14,400 sq ft, Rajasthan Gantari jarib 17,424 sq ft, Rajasthan Shahjahani jarib 27,225 sq ft.Haryana, before settlement9,075 sq ftWest Bengal14,400 sq ftRajasthan, Gantari jarib17,424 sq ftRajasthan, Shahjahani jarib27,225 sq ft
One bigha, four sizes. The same word covers three times as much land in the largest case as in the smallest. Check the state and, in Rajasthan, which jarib surveyed the village.

Assumptions

  • 1 acre = 43,560 sq ft = 4,840 sq yd, and 1 ft = 0.3048 m exactly, so 1 m² = 10.7639 sq ft and 1 hectare = 2.4711 acres
  • Cent, decimal, satak and dismil are all 1/100 acre = 435.6 sq ft. The West Bengal registration FAQ rounds this to 436.3 sq ft and to 3 bigha per acre; the exact figure is 3.025 bigha per acre
  • Gunta and guntha are 1/40 acre = 121 sq yd = 1,089 sq ft. The land-records data standard rounds this to 100 m²; the exact figure is 101.17 m²
  • Haryana after settlement: 1 karam = 66 inches, 1 sarsai = 1 karam × 1 karam = 30.25 sq ft, 9 sarsai = 1 marla, 20 marla = 1 kanal, 8 kanal = 1 acre
  • Haryana before settlement: 20 biswa = 1 bigha and 4 bigha 16 biswa = 1 acre, so 1 bigha = 9,075 sq ft. The 57.157-inch karam the record gives for this system agrees to within 0.01%
  • Rajasthan: 1 bigha = 1 jarib × 1 jarib. With the Shahjahani jarib of 165 ft that is 27,225 sq ft; with the Gantari jarib of 132 ft it is 17,424 sq ft
  • Left out for now: Assam, because the national land-records standard gives its bigha as 2,880 sq ft while Assam government documents use 14,400 sq ft. Bihar, Uttar Pradesh, Gujarat, Punjab and Telangana are also left out until we have checked a state source for each
West Bengal units, largest first1 bigha is 14,400 sq ft or 20 katha; 1 katha is 720 sq ft or 16 chhatak; 1 chhatak is 45 sq ft.11 bigha = 14,400 sq ft = 20 katha21 katha = 720 sq ft = 16 chhatak31 chhatak = 45 sq ft
West Bengal units, largest first.

Worked Examples

A 3 katha plot in West Bengal

  1. 3 katha × 720 sq ft per katha = 2,160 sq ft
  2. 2,160 sq ft ÷ 10.7639 = 200.67 m², or 240 sq yd (gaj)
  3. 2,160 ÷ 43,560 = 0.0496 acre
  4. In bigha: 2,160 ÷ 14,400 = 0.15 bigha; in decimal: 2,160 ÷ 435.6 = 4.959 decimal
  5. A West Bengal record would write it as 0 bigha 3 katha 0 chhatak

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One acre in Haryana's two systems

  1. 1 acre × 43,560 sq ft per acre = 43,560 sq ft = 4,046.86 m² = 0.4047 hectare
  2. Settled records: 43,560 ÷ 5,445 = 8 kanal, or 43,560 ÷ 272.25 = 160 marla
  3. Pre-settlement records: 43,560 ÷ 9,075 = 4.8 bigha, or 43,560 ÷ 453.75 = 96 biswa
  4. So the same acre reads 8 kanal in a new jamabandi and 4 bigha 16 biswa in an old one

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A 2,400 sq ft plot in Tamil Nadu, in cents

  1. 2,400 sq ft ÷ 435.6 sq ft per cent = 5.51 cent
  2. 2,400 ÷ 10.7639 = 222.97 m², or 266.67 sq yd (gaj)
  3. 2,400 ÷ 43,560 = 0.0551 acre, written as 0 acre 5.51 cent

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Tools on Amazon.in

Tools for measuring a plot

To get the sides right before you convert the area.

  • Measures long sides and works out area.MiLESEEY 70 m laser distance meter (4.5★, 9,400 ratings) · See on Amazon.in
  • For sides where the laser has nothing to hit.Freemans 15 m fibreglass tape (4.4★, 2,000 ratings) · See on Amazon.in
  • For short sides and offsets.Stanley 5 m measuring tape (4.5★, 27,100 ratings) · See on Amazon.in
  • Checks the ground or a wall line.Taparia 12-inch magnetic spirit level (4.4★, 2,000 ratings) · See on Amazon.in

Or search Amazon.in yourself. Type what you need, or tap a common search.

laser distance meterfibreglass measuring tapemeasuring tapespirit level

As an Amazon Associate we earn from qualifying purchases. Ratings checked October 2026. We don't show prices; Amazon has the current one.

How to Use This Calculator

  1. Read the unit off the document. Use the unit your sale deed, khatian, jamabandi or 7/12 extract actually prints. If it says 2 bigha 5 katha, convert each part and add the square feet, or convert the katha figure alone and add 2 × 14,400.
  2. Pick the state's version. Bigha and katha differ by state, so each option names its state and shows its square-foot size. If your state is not listed, we have not yet checked an official figure for it.
  3. Choose which state's units to see. The second list sets the local units shown in the result. Use it to go from sq ft to bigha or from acre to kanal, or to compare two states.
  4. Check the working. Every step is printed under the result, so you can show a seller or surveyor exactly which definition was used.

Frequently Asked Questions

How many square feet are in a bigha?
It depends on the state. West Bengal: 14,400 sq ft. Haryana pre-settlement records: 9,075 sq ft. Rajasthan: 27,225 sq ft with the 165 ft Shahjahani jarib, or 17,424 sq ft with the 132 ft Gantari jarib. An Assam government project document uses 14,400 sq ft, but the national land-records standard prints 2,880, which is why Assam is not in this converter yet.
How many sq ft is 1 katha in West Bengal?
720 sq ft (66.89 m²). One katha is 16 chhatak of 45 sq ft each, and 20 katha make a bigha of 14,400 sq ft. These figures come from the West Bengal Directorate of Registration and Stamp Revenue's own FAQ.
Is a decimal the same as a cent?
Yes. Both are one hundredth of an acre, or 435.6 sq ft (40.47 m²). Bengal and Jharkhand call it decimal, satak or dismil; the southern states call it cent.
How many square feet is one marla?
272.25 sq ft in Haryana's settled revenue records, because one marla is 9 sarsai and one sarsai is a square of one 5.5 ft karam. Twenty marla make a kanal of 5,445 sq ft.
How big is a gunta or guntha?
1,089 sq ft, or 121 square yards. That is one fortieth of an acre, and the same in Maharashtra, Karnataka and Andhra Pradesh. Land records often call it 100 m², but the exact value is 101.17 m².
Why does the area on my deed not match the converter exactly?
Old documents often round, as the West Bengal FAQ itself does with 3 bigha to the acre (the exact figure is 3.025). A local measure may also differ from the statewide one in some districts. For a purchase, go by the area on the current record of rights and a fresh survey, not by any converter.
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Sources & Limitations

What this calculator does not model

  • The converter uses statewide definitions. Some districts use a local bigha or marla that differs; the local land records office can tell you which one applies
  • It converts an area you already know. It does not measure a plot from its sides or check a survey map
  • A converted figure is not proof of area in a sale or a dispute. The record of rights and a licensed surveyor decide that
  • It covers nine states for now. We add another state only after checking its figure against a government source