Land conversion
Bigha to katha
Both of these change size by state, so the table below pairs them only where the same state has a value for each. Anywhere else the two are not comparable, and the converter is where you say what you mean.
| Region | 1 Bigha in Katha | 1 Katha in Bigha |
|---|---|---|
| Madhya Pradesh1 Bigha = 12,000 sq ft1 Katha = 600 sq ft | 20 | 0.05 |
| West Bengal1 Bigha = 14,400 sq ft1 Katha = 720 sq ft | 20 | 0.05 |
| Bihar1 Bigha = 27,225 sq ft1 Katha = 1,361.25 sq ft | 20 | 0.05 |
| Assam1 Bigha = 14,400 sq ft1 Katha = 2,880 sq ft | 5 | 0.2 |
Check it
Where each figure comes from
One division, written out, so the answer can be checked rather than trusted.
Every conversion goes through square feet. The amount becomes square feet using the value for the unit you have, then comes back out using the value for the unit you want. That is one table to be right about rather than a grid of pairs, and it is why the answer is the same whichever direction you ask in.
In Madhya Pradesh, one bigha is 12,000 square feet and one katha is 600 square feet — so 12,000 ÷ 600 = 20.
The values it divides were not written for this page. They were generated from the Android app’s own source and checked against that app’s tests, and so was the way each number is printed — the digit grouping, the two decimals above one, the switch to significant figures below it. Someone holding the phone beside this page is comparing two printed lines, not two quantities, so both had to come across.
This is a reference, not a legal measurement. Local practice varies below the level of a state, and a registry office or a surveyor is what settles a boundary. Use it to understand a listing, not to sign one.
Why there is a row per region
A unit is not always one size
The reason this page is a table and not a single number.
Bigha means different things in different places. Across the regions listed above it runs from 12,000 square feet at its smallest to 27,225 at its largest — one word, for plots that are not the same size.
Katha means different things in different places. Across the regions listed above it runs from 600 square feet at its smallest to 2,880 at its largest — one word, for plots that are not the same size.
A converter that picks one of those quietly is not being approximate. It is being wrong for most of the country, and wrong in a way nobody can see: the answer looks exactly as confident as a right one. So this page prints every value it holds instead of choosing one for you, and each row names the square-feet figure its answer was built from, so you can check it against a document rather than take it on trust.
Both units on this page vary, and they are only comparable where the same region has a value for each. The table lists those regions and no others: putting one state’s bigha against another state’s katha would answer a question nobody asked. Where you do need two different regions, the converter lets you set each side separately.
- Bihar27,225 sq ft
- West Bengal14,400 sq ft
- Assam14,400 sq ft
- Madhya Pradesh12,000 sq ft
- Assam2,880 sq ft
- Bihar1,361.25 sq ft
- West Bengal720 sq ft
- Madhya Pradesh600 sq ft
Other names
The same unit, under a different word
These two units go by several names across India, and every one of them means the same area. If you were taught a different word, it is probably here.
- Bigha
- beega · bigah · biga
- Katha
- kattha · cottah · katta · kotha
Any other number
Convert something this page does not
The converter takes any amount between any two units, and asks which region you mean wherever that changes the answer.
- use the land conversion calculator in your browser
The same conversion table as the app, with the regional values it uses.
- Indian land measurement units, and what each one is worth
Bigha, katha, guntha, gaj, kanal, marla and the rest — what each unit means, how many square feet it is, and which ones change size depending on your state.
- How big is a bigha?
A bigha has no single size. It is 27,225 square feet as a standard pucca bigha, 27,000 in Uttar Pradesh and about 12,000 in Madhya Pradesh — the state matters.
- Land measurement units in West Bengal
In West Bengal a katha is 720 square feet, not the 1,361 used in Bihar. Here is what katha, bigha, chatak and decimal mean locally, and how they convert.
Conversions people look up in the same units.
The app
What the app does that this page does not
This page answers one conversion. The app measures, prices and remembers.
The table above is one screen of Land Unit Converter, and deliberately only that one. The rest is what you want when you are standing on the plot rather than reading about it:
- Work out the area of a plot from its sides, whether it is a rectangle, a triangle or an odd shape with up to eight corners.
- Put a rate against that area and get the price, read back in lakh and crore.
- Keep the conversions you have made, and star the ones you keep coming back to.
- Hide the units you never use, so the list is the ones you do.
- Read what a unit actually is — where it is used, and how its size shifts — beside the number.
- Do all of it with no connection at all.
More about Land Unit Converter, including what it collects, what it costs and which permissions it asks for.