1 bigha in decimal is 33.0579 decimal in West Bengal, where a bigha is 14,400 sq ft. In Bihar the answer changes by district: 62.5 decimal in Patna and Arrah, 80 in Chhapra and 150 in Bettiah. A decimal (डिसमिल, dismil) is fixed at 435.6 sq ft, so only the bigha moves.
Bigha to decimal by region
The decimal is one hundredth of an acre everywhere. The bigha is not. Use the row for your area. The bigha values are commonly used local figures, not notified by a government.
Size of one bigha by region
| Region | 1 bigha in sq ft | In sq m | In decimal |
|---|---|---|---|
| Pucca bigha: Uttar Pradesh, central Bihar (Patna, Arrah), east Rajasthan | 27,225 | 2,529.29 | 62.5 |
| Kachha bigha: west Rajasthan; also the Gujarat vigha | 17,424 | 1,618.74 | 40 |
| West Bengal, Assam, Jharkhand (Ranchi) | 14,400 | 1,337.8 | 33.0579 |
| Madhya Pradesh (most quoted value) | 12,000 | 1,114.84 | 27.5482 |
| Delhi, Haryana and Punjab (old bigha-biswa records) | 9,075 | 843.0951 | 20.8333 |
| Himachal Pradesh | 8,712 | 809.3713 | 20 |
| Uttarakhand | 6,804 | 632.1123 | 15.6198 |
| Bihar: Hajipur and Muzaffarpur | 38,025 | 3,532.64 | 87.2934 |
| Bihar: Chhapra (Saran) | 34,848 | 3,237.49 | 80 |
| Bihar: Bettiah (West Champaran) | 65,340 | 6,070.28 | 150 |
West Bengal: bigha, katha and decimal together
West Bengal uses the same bigha of 14,400 sq ft across the state. It splits into 20 katha of 720 sq ft each. The khatian on Banglarbhumi shows area in acre and decimal, while people still talk in bigha and katha. So you often need to move between them:
- 1 bigha = 20 katha = 33.0579 decimal
- 1 katha = 1.6529 decimal
- 1 decimal = 0.605 katha
- 1 acre = 100 decimal = 3.025 bigha
Assam and Ranchi in Jharkhand use the same 14,400 sq ft bigha, so the 33.0579 figure works there too.
Bihar: one name, many sizes
In Bihar a bigha is always 20 katha, but the katha size depends on the district. Jamabandi records on Bihar Bhumi show rakba in acre and decimal, so this conversion matters at every sale.
| Area | 1 katha in decimal | 1 bigha in decimal |
|---|---|---|
| Patna, Arrah | 3.125 | 62.5 |
| Chhapra (Saran) | 4 | 80 |
| Hajipur, Muzaffarpur | 4.3647 | 87.2934 |
| Bettiah (West Champaran) | 7.5 | 150 |
How to convert
Decimal = bigha × bigha size in sq ft ÷ 435.6
Example in West Bengal: 3 bigha × 14,400 = 43,200 sq ft. Divide by 435.6 and you get 99.1736 decimal.
Example in Patna: 1.5 bigha × 62.5 = 93.75 decimal.
Mixed entry in West Bengal: 1 bigha 5 katha is 25 katha. 25 × 720 = 18,000 sq ft, which is 41.3223 decimal.
Reverse: 50 decimal is 1.5125 bigha in West Bengal and 0.8 bigha in Patna.
Other states at a glance
Outside Bengal and Bihar, decimal is less common, but people still ask. On the pucca bigha of Uttar Pradesh and east Rajasthan, 1 bigha is 62.5 decimal. The kachha bigha of west Rajasthan, which is also the Gujarat vigha, is 40 decimal. The most quoted Madhya Pradesh bigha is 27.5482 decimal, the Himachal bigha is 20 decimal and the Uttarakhand bigha is 15.6198 decimal. Odisha land is recorded in acre and decimal with no bigha in common use.
Bigha to decimal table by region
| Bigha | Decimal UP, Bihar (Patna), east Rajasthan | Decimal West Rajasthan, Gujarat | Decimal West Bengal, Assam, Ranchi | Decimal Madhya Pradesh | Decimal Delhi, Haryana, Punjab |
|---|---|---|---|---|---|
| 0.25 | 15.625 | 10 | 8.2645 | 6.8871 | 5.2083 |
| 0.5 | 31.25 | 20 | 16.5289 | 13.7741 | 10.4167 |
| 1 | 62.5 | 40 | 33.0579 | 27.5482 | 20.8333 |
| 2 | 125 | 80 | 66.1157 | 55.0964 | 41.6667 |
| 3 | 187.5 | 120 | 99.1736 | 82.6446 | 62.5 |
| 4 | 250 | 160 | 132.2314 | 110.1928 | 83.3333 |
| 5 | 312.5 | 200 | 165.2893 | 137.741 | 104.1667 |
| 10 | 625 | 400 | 330.5785 | 275.4821 | 208.3333 |
| 15 | 937.5 | 600 | 495.8678 | 413.2231 | 312.5 |
| 20 | 1,250 | 800 | 661.157 | 550.9642 | 416.6667 |
| 25 | 1,562.5 | 1,000 | 826.4463 | 688.7052 | 520.8333 |
| 50 | 3,125 | 2,000 | 1,652.89 | 1,377.41 | 1,041.67 |
| 100 | 6,250 | 4,000 | 3,305.79 | 2,754.82 | 2,083.33 |
Regional columns use the most commonly used size in each area. Confirm your local size with the revenue office.
Tips
- Do not use a West Bengal bigha for a Bihar plot, or the other way round. On 5 bigha the gap is 165.2893 decimal against 312.5 decimal.
- Decimal, satak and dismil are the same unit. A cent in south India is the same size too.
- When a deed and a record disagree, trust the decimal figure in the record and ask the amin or block land office to check the bigha.
- For a sale, partition or court matter, confirm the local bigha with the revenue office.
Questions people ask
1 bigha me kitna dismil hota hai?
In West Bengal, Assam and Ranchi, 1 bigha is 33.0579 dismil. In Patna and Arrah it is 62.5 dismil, in Chhapra 80 and in Bettiah 150. In Uttar Pradesh's pucca bigha it is also 62.5.
1 bigha in decimal in West Bengal?
1 bigha is 33.0579 decimal in West Bengal. That comes from 14,400 sq ft divided by 435.6 sq ft.
2 bigha in decimal?
2 bigha is 66.1157 decimal in West Bengal and 125 decimal on the Patna and Uttar Pradesh pucca bigha.
50 decimal to bigha?
50 decimal is 1.5125 bigha in West Bengal, 0.8 bigha in Patna and Arrah, and 0.625 bigha in Chhapra.
1 bigha in decimal in Bihar?
It depends on the district. Patna and Arrah: 62.5. Chhapra: 80. Hajipur and Muzaffarpur: 87.2934. Bettiah: 150. Confirm with the local amin.
Local units can differ inside a state. Before a sale, partition or court filing, confirm the unit with your tehsil, circle or revenue office and check the land record. How we check our numbers.