Land Unit Converter (Bangladesh)

Converts land area between the units used in Bangladesh, including square feet, square metres, katha, bigha, acre and decimal.

Enter your numbers

Land quantity

Example: 1

From unit

To unit

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

Formula

sqft = value * factor(fromUnit); converted = sqft / factor(toUnit); conversions use 1 katha = 720 sqft, 1 bigha = 20 katha = 14400 sqft, 1 acre = 100 decimal = 43560 sqft, 1 decimal = 435.6 sqft, 1 sqm = 10.7639 sqft

How the calculation works

This converter reduces every unit to a common base of square feet and then divides by the target factor, so the rounding stays consistent throughout.

In Bangladesh a katha is standardised at 720 square feet and a bigha at 20 katha, giving 14400 square feet, while an acre equals 100 decimal at 43560 square feet.

A decimal, also called a shotangsho, is 435.6 square feet, and one square metre is about 10.7639 square feet for metric comparisons.

Common mistakes

Katha is not the same everywhere, since historically some districts use a larger katha, so confirm the local standard before relying on 720 square feet.
Mixing up decimal and square feet when the numbers look similar can be costly, because one decimal is over four hundred square feet.

When to use it

Use it when reading a deed or mutation record, where land is often quoted in katha, bigha or decimal but you need square feet for construction.
Use it to compare plot sizes listed in different units before buying or renting land.

Worked example

Converting 1 katha gives 720 square feet, which is also 1.6529 decimal and about 66.89 square metres.

Converted ৳720.00

Square feet 720.00

Katha 1.00

Bigha 0.05

Acre 0.02

Decimal 1.65

Common questions

How many decimal are in one bigha?

One bigha is 20 katha or 14400 square feet, and since one decimal is 435.6 square feet, one bigha works out to about 33.06 decimal.

Last updated: 2026-10-03