Land Area Converter — Bigha, Guntha, Cent, Marla, Acre

About the Land Area Converter — Bigha, Guntha, Cent, Marla, Acre

Convert a land area between square feet, square metres, square yards (gaj), acres, hectares, ares, cents (decimals), gunthas and the state units of land records — kanal, marla and sarsai or bigha, biswa and biswansi in Haryana, and bigha, katha and chatak in West Bengal. Type the area the way the record or deed says it, such as 2 kanal 5 marla, 3 katha 8 chatak or 1 acre 20 guntha, and every other unit appears at once, with the usual breakdowns (acre–guntha, hectare–are, kanal–marla–sarsai).

A bigha, a katha or a marla is not the same size everywhere — it changes from state to state and sometimes from district to district. So this converter only uses a state’s sizes where an official revenue or registration source states them, and shows that source next to the result: Haryana (Revenue Department, jamabandi.nic.in) and West Bengal (Directorate of Registration and Stamp Revenue). For any other place, define your local unit from your land record, deed or tehsil office — for example 1 bigha = 1,600 gaj — and it converts like any other unit.

Common uses

• Reading a jamabandi or fard in kanal and marla and comparing it with a builder’s figure in sq ft.
• Converting a West Bengal deed in bigha, katha and chatak to square feet or decimals.
• Checking a plot advertised in gaj, cents or gunthas against its size in square metres.
• Working with a district’s own bigha by defining it once.

Units with one size everywhere

• Square foot = 0.09290304 m² exactly (1 ft = 0.3048 m) and square yard (gaj) = 9 sq ft = 0.83612736 m². In plot sizes a gaj means a square yard.
• Acre = 43,560 sq ft = 4,840 sq yd = 4,046.8564224 m².
• Cent or decimal = 1/100 acre = 435.6 sq ft (≈ 40.47 m²) — the cent of south Indian land sales, called a decimal in eastern India.
• Guntha (gunta) = 1/40 acre = 1,089 sq ft (33 ft × 33 ft), as in the acre–guntha areas of Maharashtra, Karnataka and Telangana.
• Are = 100 m² and hectare = 100 ares = 10,000 m² — the hectare–are areas of Maharashtra’s 7/12 extracts, for example.

Haryana: kanal, marla, sarsai — and bigha, biswa, biswansi

The Haryana Revenue Department’s page Units of Measurements on jamabandi.nic.in gives two systems, both built on the karam, the length unit of the revenue survey:

• After settlement: 1 karam = 66 inches; 1 sarsai = 1 karam × 1 karam (30.25 sq ft); 9 sarsai = 1 marla (272.25 sq ft); 20 marla = 1 kanal (5,445 sq ft); 8 kanal = 1 acre (ghumaon) = 36 × 40 karam.
• Before settlement: 1 karam = 57.157 inches; 1 biswansi = 1 karam × 1 karam (≈ 22.69 sq ft); 20 biswansi = 1 biswa; 20 biswa = 1 bigha (≈ 9,074.8 sq ft); 4 bigha 16 biswa = 1 acre. In cooperative settlement 4 bigha = 1 killa (40 × 40 karam).

The calculator works from the karam, so 4 bigha 16 biswa comes out within 0.003 % of an acre.

West Bengal: bigha, katha, chatak

The land market-value form of the Directorate of Registration and Stamp Revenue (igr.wb.gov.in) adds areas in decimals at 1 bigha = 33, 1 katha = 1.65 and 1 chatak = 0.103125 decimal, and 1 sq ft = 0.00229167 decimal. That is 20 katha to the bigha, 16 chatak to the katha, 720 sq ft to the katha and 45 sq ft to the chatak, which is what the calculator uses. Exactly, 720 sq ft is 1.6529 decimal (a decimal being 435.6 sq ft); the form rounds it to 1.65, so its decimal totals can differ from these by about 0.2 %.

Why other states ask for your local size

Outside these sources the size of a bigha — and of a katha, biswa, ground or nali — changes with the place, sometimes from one district to the next. Rather than guess, the converter asks you to enter the size given in your khatauni, jamabandi, record of rights, sale deed or by the patwari or tehsil office. Once defined, the local unit works in typed areas (3 bigha 4 biswa) and gets its own breakdown.

Sources

• Haryana Revenue Department — Units of Measurements, jamabandi.nic.in.
• Directorate of Registration and Stamp Revenue, West Bengal — land market-value form.
• NIST Handbook 44 (2026), Appendix C — acre = 43,560 sq ft = 4,046.8564224 m²; NIST SP 811, Appendix B.8 — square foot, are and hectare.

Limitations

• Only Haryana and West Bengal have state presets, because only their sizes could be confirmed from an official source. Everything else needs your local definition.
• Units can also differ inside a state, for example between districts, or between a revenue unit and a town’s customary one. Check which one your document uses.
• Results are conversions, not a survey. For a sale, mutation or dispute, the area in the official record and the surveyor’s measurement are what count.

Privacy

Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.