1 decimal = 0.32 katha (435.6 sq ft). To convert decimals to katha, multiply by 0.32. To convert katha back to decimals, multiply by 3.125. The figures below use the Katha (Bihar) size; the state-wise table shows other states.
1 Decimal = 0.32 Katha (Bihar)
Decimal to katha formula
Katha = decimals × 0.32
Example: 5 decimals = 5 × 0.32 = 1.6 katha.
Decimal to katha conversion table
| Decimals | Katha | Square feet |
|---|---|---|
| 1 | 0.32 | 435.6 |
| 2 | 0.64 | 871.2 |
| 3 | 0.96 | 1,306.8 |
| 4 | 1.28 | 1,742.4 |
| 5 | 1.6 | 2,178 |
| 10 | 3.2 | 4,356 |
| 15 | 4.8 | 6,534 |
| 20 | 6.4 | 8,712 |
| 25 | 8 | 10,890 |
| 50 | 16 | 21,780 |
| 100 | 32 | 43,560 |
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
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).
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.
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 katha are in 1 decimal?
1 decimal is 0.32 katha.
How do I convert decimals to katha?
Multiply the number of decimals by 0.32. For example, 5 decimals = 1.6 katha.
How many decimals make 1 katha?
1 katha is 3.125 decimals.
What is 1 decimal in square feet?
1 decimal is 435.6 square feet.



