Katha to Bigha
One bigha is 5 to 20 katha, depending on the state. Full table for all 6, Assam through Bihar. With the formula, regional variants and what to confirm locally.
Short answer
Katha to Bigha: the figure for every state
| State | 1 bigha (sq ft) | katha per bigha |
|---|---|---|
| Madhya Pradesh | 12,000 | 20 |
| Chhattisgarh | 12,000 | 20 |
| West Bengal | 14,400 | 20 |
| Assam | 14,400 | 5 |
| Bihar | 27,225 | 20 |
| Jharkhand | 27,225 | 20 |
Bigha is not a standardised unit
Commonly-cited approximate figure — confirm the exact local value with your state or district land revenue department before any transaction.States that do not use this sub-unit are left out of the table rather than given an invented figure — saying nothing is better than saying something untrue.
Katha to Bigha: what is the actual conversion?
There is no single national answer to katha to bigha. The figure ranges from 5 to 20, and which one applies depends entirely on the state the land is in. In Assam it comes to 5, while in Bihar the same quantity is 20 — a difference of roughly 4 times. The reason is straightforward: an acre is fixed worldwide at exactly 43,560 square feet, but the bigha is a customary unit that each state defined for itself long before the metric system arrived. Several states run more than one convention at once — a pucca and a kaccha bigha, or separate hill and plain measures — so the state alone does not always settle it. These are commonly-cited reference figures derived from each state's traditional definition, not legal standards: the area recorded by your district land revenue office is what governs any transaction. Last checked 2026-08-03.
Questions people ask
Katha to Bigha in Uttar Pradesh?
In Uttar Pradesh it works out to about 20, based on the pucca bigha of 12,000 square feet. Western UP also uses a smaller five-biswa bigha, so confirm the figure at district level before relying on it.
Katha to Bigha in West Bengal?
In West Bengal it is roughly 20, because the Bengal bigha is 14,400 square feet — one of the smallest in the country. Assam uses the same bigha but divides it into five katha rather than twenty.
Run your own number
Pick your state, type any amount, and the answer updates as you type.
Commonly-cited approximate figure — confirm the exact local value with your state or district land revenue department before any transaction.