West Bengal Land Calculator — Bigha, Katha, Chhatak & Satak Converter

Understanding Land Measurement in West Bengal

Land administration in West Bengal is governed by the West Bengal Land Reforms Act of 1955. In modern online land records (Banglarbhumi / DLRS West Bengal), land area in Porcha and Khatian is recorded primarily in Acre and Satak / Decimal (শতক / ডিসমিল), along with metric Hectares.

However, in real estate transactions, boundary wall constructions, and traditional agriculture, traditional Bengali units such as Bigha (বিঘা), Katha (কাঠা), and Chhatak (ছটাক) are overwhelmingly preferred.

The standard Bengal Bigha is standardized at 14,400 square feet (1,600 square yards), where 1 Bigha contains 20 Katha, 1 Katha contains 16 Chhatak (720 sq ft), and 1 Chhatak contains 45 sq ft.

Standard Bengal Land Unit Hierarchy (বিঘা, কাঠা, ছটাক)

The traditional measurement system follows a precise binary-vigesimal subdivision:

Standard Bengal Bigha (বিঘা): 1 Bigha = 20 Katha = 1,600 sq yd = 14,400 sq ft = 1,337.804 sq m (33.3333 Satak). 1 Acre equals exactly 3.025 Bengal Bighas.
Katha (কাঠা): 1/20 Bigha = 16 Chhatak = 80 sq yd = 720 sq ft = 66.890 sq m (1.65289 Satak).
Chhatak (ছটাক): 1/16 Katha = 20 Ganda = 5 sq yd = 45 sq ft = 4.181 sq m (0.1033 Satak).
Ganda (গণ্ডা): 1/20 Chhatak = 4 Kauri = 2.25 sq ft = 0.209 sq m.
Satak / Decimal (শতক): 1/100 Acre = 435.6 sq ft = 48.4 sq yd = 40.469 sq m.

Important Land Conversion Formulas

These verified mathematical formulas govern the traditional and statutory land units in West Bengal.

Bigha to Katha

One Standard Bengal Bigha contains exactly 20 Katha.

Katha = Bigha × 20

Katha to Chhatak

One Katha contains exactly 16 Chhatak.

Chhatak = Katha × 16

Acre to Satak (Decimal)

One Acre contains exactly 100 Satak (Decimals).

Satak = Acre × 100

Acre to Bengal Bigha

One Acre equals exactly 3.025 Bengal Bighas (3 Bigha 8 Chhatak).

Bengal Bigha = Acre × 3.025

Important Verified Standard Values (Standard Bengal Bigha)

1 Standard Bengal Bigha = 14,400 sq ft = 1,600 sq yd (1,337.804 sq m)
1 Katha = 720 sq ft = 80 sq yd (66.890 sq m = 1.65289 Satak)
1 Chhatak = 45 sq ft = 5 sq yd (4.1806 sq m)
1 Satak / Decimal = 435.6 sq ft = 48.4 sq yd (40.4686 sq m)
1 Acre = 43,560 sq ft = 100 Satak = 3.025 Bengal Bighas
1 Hectare = 10,000 sq m = 2.471 Acres = 247.105 Satak

How to Use the West Bengal Land Calculator

Select the operational mode: Choose Standard Bengal Bigha (14,400 sq ft) for standard statewide Bengali land transactions, or North Bengal Cadastral (27,225 sq ft) if converting old northern settlement holdings.
Enter the area value: Type the numeric quantity you want to convert.
Select From Unit: Choose your source unit (e.g., Bigha, Katha, Chhatak, Satak, Acre, Hectare).
Select To Unit: Choose the target unit for conversion.
Read the result: The verified calculation engine instantly displays the exact result along with the single-unit conversion baseline.

Verified West Bengal Land Conversion Table (Standard Bengal)

Land Unit	Square Feet	Square Metres	Scope
Bengal Bigha (বিঘা)	14,400	1,337.803776	Standard Bengal (33.3333 Satak)
Katha (কাঠা)	720	66.8901888	1/20th Bigha (16 Chhatak)
Chhatak (ছটাক)	45	4.1806368	1/16th Katha (20 Ganda)
Satak / Decimal (শতক)	435.6	40.468564224	Statutory Banglarbhumi Unit
Acre (একর)	43,560	4,046.8564224	100 Satak = 3.025 Bighas
Hectare (হেক্টর)	107,639.104	10,000	Statutory SI Metric Unit