1 katha = 3.125 decimals (1,361.25 sq ft). To convert katha to decimals, multiply by 3.125. To convert decimals back to katha, multiply by 0.32. The figures below use the Katha (Bihar) size; the state-wise table shows other states.
1 Katha (Bihar) = 3.125 Decimal
Katha to decimals formula
Decimals = katha × 3.125
Example: 5 katha = 5 × 3.125 = 15.625 decimals.
Katha to decimals conversion table
| Katha | Decimals | Square feet |
|---|---|---|
| 1 | 3.125 | 1,361.25 |
| 2 | 6.25 | 2,722.5 |
| 3 | 9.375 | 4,083.75 |
| 4 | 12.5 | 5,445 |
| 5 | 15.625 | 6,806.25 |
| 10 | 31.25 | 13,612.5 |
| 15 | 46.875 | 20,418.75 |
| 20 | 62.5 | 27,225 |
| 25 | 78.125 | 34,031.25 |
| 50 | 156.25 | 68,062.5 |
| 100 | 312.5 | 136,125 |
State-wise katha size
| State | 1 katha in sq ft | 1 katha in decimals |
|---|---|---|
| Bihar | 1,361.25 | 3.125 |
| West Bengal | 720 | 1.6529 |
| Assam | 2,880 | 6.6116 |
| Jharkhand | 1,361.25 | 3.125 |
Local measures vary by district and by old records; the patwari or tehsil record for the land is final.
Where these units are used
Katha (kattha) is used in Bihar, Jharkhand, West Bengal and Assam. Its size differs by state: about 1,361 sq ft in Bihar, 720 sq ft in West Bengal and 2,880 sq ft in Assam.
Decimal is used in land records and sale deeds in Bihar, Jharkhand, West Bengal and Odisha. 1 decimal equals 1 cent (one-hundredth of an acre).
Related converters
- Land area converter (all units)
- Square metre to square feet
- Acre to square feet
- Hectare to acre
- Bigha to square feet
- Gaj to square feet
- Guntha to square feet
- Cent to square feet
Frequently asked questions
How many decimals are in 1 katha?
1 katha is 3.125 decimals.
How do I convert katha to decimals?
Multiply the number of katha by 3.125. For example, 5 katha = 15.625 decimals.
How many katha make 1 decimal?
1 decimal is 0.32 katha.
What is 1 katha in square feet?
1 katha is 1,361.25 square feet (Katha (Bihar)); the size is different in other states.



