Plot Area Calculator
Enter the length and width of a rectangular plot to see its area in square feet, katha, decimal, bigha, acre and square meters.
Result
- Katha (720 sq ft)
- 3.3333
- Decimal / Shotangsho (435.6 sq ft)
- 5.5096
- Bigha (20 katha)
- 0.1667
- Acre
- 0.0551
- Square meters
- 222.97
- Works for a rectangular plot. For other shapes, split the plot into rectangles and add the areas. Katha and bigha use the standard Bangladesh and West Bengal values, which can differ by district, so check the area in the official record.
How to use Plot Area Calculator
- Enter the length and the width of the plot.
- Choose the unit you measured in: feet, meters, hat, yards or inches.
- Read the area in square feet, katha, decimal, bigha and acre.
About this tool
The area of a rectangular plot is its length times its width. This calculator turns the measurements into square feet, then into the units used for land in Bangladesh and West Bengal: 1 katha is 720 sq ft, 1 decimal is 435.6 sq ft, 1 bigha is 20 katha (14,400 sq ft) and 1 acre is 43,560 sq ft.
A hat (cubit) is taken as 1.5 feet. For an irregular plot, split it into rectangles and triangles and add the areas. Katha and bigha differ between regions, so use the official record for any sale or registration.
How it is calculated
Area (sq ft) = length (ft) × width (ft).
Katha = sq ft ÷ 720. Decimal = sq ft ÷ 435.6. Bigha = sq ft ÷ 14,400.
Worked examples
- 60 ft × 40 ft = 2,400 sq ft = 3.33 katha = 5.51 decimal.
- 24 hat × 30 hat = 1,620 sq ft = 2.25 katha.
Tips for better results
- Measure each side twice and use the average if the plot is not a perfect rectangle.
- For legal use, rely on the area in the deed or survey record.
Frequently asked questions
How many katha is a 60 ft by 40 ft plot?
3.33 katha (2,400 square feet).
How do I find the area of a plot?
Multiply the length by the width for a rectangular plot.
How many feet is a hat?
This calculator uses 1 hat = 1.5 feet (18 inches).
Is a katha the same everywhere?
No. The katha and bigha differ between regions. This page uses 720 sq ft per katha and 20 katha per bigha (Bangladesh and West Bengal). Check the value in your deed and with the local land office.
Are my numbers saved or sent anywhere?
No. The calculation runs in your browser on your own device. Nothing you type is sent to Paul Digital or any other server.
Related tools
- Square Feet to Katha
- Square Feet to Decimal
- Bangladesh Land Converter
- Pond Excavation Calculator
- All web tools
Privacy
The calculation runs in your browser on your own device. The numbers you type are not sent to Paul Digital or any other server. Results are estimates from the numbers you enter and are not financial, tax or legal advice.