Published: June 16, 2026 | By Bengal Property Index Editorial Team | Disclaimer
If a seller quotes land in bigha and you need to compare with a listing priced per sq ft – or if you’re reading a Banglarbhumi khatian and it shows “2-17-8” – you need the exact West Bengal conversion rates. This guide gives you all of them, with no rounding.
Why These Units Exist
West Bengal’s land measurement system comes from Bengal Presidency cadastral surveys, the British revenue settlement process, and post-independence Land Reforms. Banglarbhumi land records (RS and LR khatians) express plot area in acre, katha, and chatak. Rural property prices are quoted per bigha. Agricultural land deals use decimal. Builders quote flats in sq ft. You need to move between all of them.
The Exact WB Conversion Table
Bigha (WB Standard)
| From | To | Value |
|---|---|---|
| 1 Bigha | Katha | 20 |
| 1 Bigha | Chatak | 320 |
| 1 Bigha | Decimal | 100 |
| 1 Bigha | Sq Ft | 14,400 |
| 1 Bigha | Sq M | 1,337.8 |
| 1 Bigha | Acre | 0.3306 |
| 1 Bigha | Hectare | 0.1338 |
Katha
| From | To | Value |
|---|---|---|
| 1 Katha | Chatak | 16 |
| 1 Katha | Decimal | 5 |
| 1 Katha | Sq Ft | 720 |
| 1 Katha | Sq M | 66.89 |
| 20 Katha | Bigha | 1 |
Decimal
| From | To | Value |
|---|---|---|
| 1 Decimal | Sq Ft | 435.56 |
| 1 Decimal | Sq M | 40.47 |
| 1 Decimal | Acre | 0.01 (exact) |
| 100 Decimal | Bigha (WB) | 1 |
Chatak
| From | To | Value |
|---|---|---|
| 1 Chatak | Sq Ft | 45 |
| 1 Chatak | Sq M | 4.18 |
| 16 Chatak | Katha | 1 |
| 320 Chatak | Bigha | 1 |
International Reference
| Unit | Sq Ft |
|---|---|
| 1 Acre | 43,560 |
| 1 Hectare | 107,639 |
| 1 Sq M | 10.764 |
Use the Calculator – Don’t Do This Manually
Enter any one value, get all eight units simultaneously: WB Land Measurement Converter →
Critical: 1 Bigha Is NOT the Same in Every State
| State | 1 Bigha in Sq Ft |
|---|---|
| West Bengal | 14,400 |
| Bihar | 27,211 |
| Uttar Pradesh | 27,000 |
| Rajasthan | 27,225 |
| Assam | 14,400 (same as WB) |
| Punjab | 9,070 |
If you’re from Bihar or UP, a WB bigha is almost exactly half the size you’re used to. Always confirm which state’s bigha standard is being used – especially in inter-state transactions or when buying from out-of-state sellers.
How Banglarbhumi Shows Land Area
Khatian records express area as: Acre – Katha – Chatak
Example reading: 0 - 14 - 12 = 0 acres, 14 katha, 12 chatak
To convert:
- 14 Katha × 720 = 10,080 sq ft
- 12 Chatak × 45 = 540 sq ft
- Total: 10,620 sq ft = 0.737 bigha (WB)
The land converter handles this calculation instantly – just enter the katha value.
Practical Use Cases
Buying agricultural land: Listed at “5 Bigha 10 Katha” = 5.5 bigha = 79,200 sq ft = 1.818 acres. Verify against Banglarbhumi khatian before signing.
Buying urban plot: Listed at “15 Decimal” = 6,533 sq ft. Typical small plot in Hooghly or Burdwan town.
Checking RERA flat area: Super built-up area is in sq ft. The land dag area in RERA documents may be in decimal or katha – convert to compare.
Stamp duty on plots: Calculated on declared area at Sub-Registrar circle rate per sq ft. Convert your bigha/katha area to sq ft first. See Buyer’s Guide for full stamp duty calculation.
WB land measurement conversion rates are fixed and do not vary by district. Older revenue records may occasionally use regional variants – always verify against the Banglarbhumi khatian for the specific plot. See Disclaimer.
Sources: WB Land Records & Survey Directorate; Banglarbhumi.gov.in khatian format; Survey of India measurement standards.