Katha to Square Feet Calculator
Convert Katha to square feet using the West Bengal land measurement standard.
How this calculator works
Square Feet = Katha × 720.
This page uses the West Bengal standard. Katha values in other states may differ.
Example
5 Katha × 720 = 3,600 square feet.
Source and unit note
West Bengal Registration Directorate lists the commonly used relationships as 1 Bigha = 20 Katha = 14,400 sq ft, 1 Katha = 16 Chatak = 720 sq ft and 1 Chatak = 45 sq ft.
For Decimal, CalcSetu uses the exact acre-based definition: 1 Decimal = 1/100 Acre = 435.6 sq ft. Some official and local references show rounded approximations, so deed or survey records should be used for legal purposes.
West Bengal Registration Directorate
Last reviewed: 27 August 2026.
Frequently asked questions
How many square feet are in 1 Katha in West Bengal?
1 Katha = 720 square feet.
Is 1 Katha the same across India?
No. Katha is a regional unit and its size can differ by state.
How many Chatak are in 1 Katha?
1 Katha = 16 Chatak in the West Bengal system used here.