Free tool
Katha to square feet converter
1 katha = 720 sq ft in West Bengal and Tripura, 1,361.25 sq ft in Bihar and Jharkhand, and 2,880 sq ft in Assam — check the state before you convert.
1 katha = 720 sq ft in West Bengal
For information only. Confirm the area of a specific plot with its land record or the local revenue office.
Conversion table
Katha to square feet
| katha | sq ft · West Bengal | sq ft · Bihar | sq ft · Assam |
|---|---|---|---|
| 1 katha | 720 | 1,361.25 | 2,880 |
| 2 katha | 1,440 | 2,722.5 | 5,760 |
| 5 katha | 3,600 | 6,806.25 | 14,400 |
| 10 katha | 7,200 | 13,612.5 | 28,800 |
| 20 katha | 14,400 | 27,225 | 57,600 |
| 25 katha | 18,000 | 34,031.25 | 72,000 |
| 50 katha | 36,000 | 68,062.5 | 1,44,000 |
| 100 katha | 72,000 | 1,36,125 | 2,88,000 |
1 katha in square feet, state by state
| State | 1 katha = |
|---|---|
| Assam | 2,880 sq ft |
| Bihar | 1,361.25 sq ft |
| Jharkhand | 1,361.25 sq ft |
| Madhya Pradesh | 600 sq ft |
| Tripura | 720 sq ft |
| West Bengal | 720 sq ft |
These are the commonly used values; they can differ by district. Confirm with the local revenue office or the state’s land records before you buy, sell or price land.
The unit
What is a katha?
A katha (also kattha, or cottah in Kolkata) is a land unit of eastern India. In Kolkata, plots are commonly quoted in katha: a 3-katha plot there is 2,160 sq ft, about 200.67 sq m.
In West Bengal and Tripura, 20 katha make a bigha of 14,400 sq ft. In Bihar and Jharkhand, 20 katha make a bigha of 27,225 sq ft. Assam's katha is larger, so only 5 katha make its bigha of 14,400 sq ft.
Some districts of north Bihar are commonly reported to use a smaller katha than Patna. If your land is there, confirm the local value with the circle office before you rely on the figure below.
Official land records
- Dharitree · Assam
- Bihar Bhumi · Bihar
- Jharbhoomi · Jharkhand
- MP Bhulekh · Madhya Pradesh
- Jami · Tripura
- Banglarbhumi · West Bengal
Worked example
A 4-katha plot in Kolkata and in Patna
In Kolkata, 4 katha is 4 × 720 = 2,880 sq ft (320 gaj).
In Patna, 4 katha is 4 × 1,361.25 = 5,445 sq ft — 1.89 times the Kolkata plot. A buyer moving between the two cities should compare plots in sq ft, not in katha.
Prices in examples are illustrative, not market rates.
Questions
Frequently asked.
How many katha are in a bigha?
In West Bengal, Tripura, Bihar and Jharkhand, 20 katha make one bigha, so a katha is one-twentieth of the local bigha. Assam is the exception: its katha is 2,880 sq ft, so 5 katha make an Assam bigha of 14,400 sq ft.
How many square feet is 1 katha in Kolkata?
One katha (cottah) in Kolkata is 720 sq ft, which is 66.89 sq m or 80 gaj. It is commonly divided into 16 chhatak of 45 sq ft each, a unit you may still see in older Kolkata deeds.
How do I convert katha to decimal?
A decimal is 435.6 sq ft everywhere, so divide the katha's square feet by 435.6. One West Bengal katha is 1.653 decimal, and one Bihar katha is 3.125 decimal. Records in both states often give plot area in decimals.
- All units: area converter
- Bigha to square feet
- Decimal to square feet
- Acre to bigha
- Biswa to square feet
- What is Katha?
- What is Bigha?
Reviewed . Every figure is computed from the same unit table PropZolo uses for listings and requirements.
Every unit, inside your CRM.
PropZolo stores listings and requirements in the unit you enter — gaj, bigha or sq ft — and matches them across units.