Opening the tool…
What this tool does
Unit Converter turns one amount into another unit in your browser, including bigha, guntha, cent, ground, marla and kanal.
How to use it
Choose Length, Area, Weight, Volume or Temperature. Area opens first, because that is where the Indian land units sit.
Type the amount. Pick a from unit and a to unit, or tap a chip such as Acre to Bigha (UP) or Guntha to Sq ft. Use Swap units if they are the wrong way round.
Tap Convert. The large figure is the result. When the unit is a state measure, a short note says which definition was used.
Copy the summary, or download a CSV of the amount, the units, the result and the factor note.
Official sources
Last checked 2026-10-16.
- NIST Special Publication 811, Appendix B, section B.6 (international foot 0.3048 m, acre 43,560 square feet, international mile 5,280 feet)
- BIPM SI Brochure: metre, kilogram, kelvin, and the litre (1 litre = 1 cubic decimetre)
- UK Weights and Measures Act 1985, Schedule 1 (1 gallon = 4.54609 cubic decimetres)
- Poona District Gazetteer, Department of Land Records: guntha is 121 square yards (one square chain), and 40 guntha make 1 acre
- Maharashtra Bhumi Abhilekh: 1 acre = 40 guntha = 43,560 sq ft, with 1,089 sq ft given as the guntha example
- Tamil Nadu Commissionerate of Survey and Settlement conversion table: 435.6 sq ft = 1 cent, 2,400 sq ft = 1 ground, 43,560 sq ft = 1 acre
- Bihar revenue glossary (approved 13 October 2025): Patna katha about 1,361 sq ft, bigha about 20 katha, decimal about 435.6 sq ft (1/100 acre)
- Bigha (Wikipedia), read 2026-10-16: published customary sizes for eastern UP, Patna, Rajasthan, Assam and West Bengal
- Measurement of land in Punjab (Wikipedia), read 2026-10-16: 1 marla = 272.25 sq ft, 1 kanal = 20 marla, 1 acre = 8 kanal
FAQ
How many square feet are in a bigha?
It depends which bigha. Eastern UP and Patna are 27,225 square feet. Western UP is often 6,806.25. Rajasthan kachha is 17,424. Assam and West Bengal are 14,400. Punjab and Haryana are 21,780. Pick the named unit and read the note.
How many guntha are in one acre?
Forty. One guntha is 1,089 square feet, or 121 square yards. This page does not treat a guntha as 100 square metres.
Are cent and decimal the same?
Yes, as area. Both are one hundredth of an acre, 435.6 square feet. Cent is the usual word in the south, and decimal is the usual word in Bihar and Bengal records. The labels stay separate so the note matches the record you are reading.
How big is a ground in Chennai?
Tamil Nadu Survey and Settlement prints 2,400 square feet for one ground. The same table also equates a ground with 5.5 cent, which is 4.2 square feet less. The converter follows 2,400 square feet.
What marla and kanal does this use?
The Punjab and Haryana revenue sizes: one marla is 272.25 square feet, one kanal is 20 marla, and eight kanal make one acre. A different city marla is not included.
Is the number I type uploaded?
No. Conversion runs in your browser. The amount, the units and the result stay on your device.
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