The katha has no single size: it is 720 ft² in West Bengal and Bangladesh, about 1,361 ft² in Bihar, 2,880 ft² in Assam and 3,645 ft² (338.6 m²) in Nepal’s Terai. Always confirm the local standard on the land record.
How to use the Katha to Square Feet Converter
- Region
- Area in katha
- Every result field is editable: type into Area or any other result and Area in katha plus every other field update to match.
Results update as you type, and every field accepts the units shown in its menu.
How it works
Pick the region, enter the area in katha, and the calculator multiplies by that region’s square-foot value. Type a square-foot figure into the result to get katha back.
Inputs explained
| Field | What to enter |
|---|---|
| Region | Choose one: West Bengal / Bangladesh (720 ft²), Bihar (1,361.25 ft²), Assam (2,880 ft²), Nepal (3,645 ft²) |
| Area in katha | A number |
What each result means
- Area = [Area in katha] × [Region] × 0.09290304
- In square metres = [Area in katha] × [Region] × 0.09290304
- In decimals (cents) = [Area in katha] × [Region] × 0.09290304
- In acres = [Area in katha] × [Region] × 0.09290304
Example values
How the main result changes when Area in katha changes and everything else stays at the example values above:
| Area in katha | Area (ft²) |
|---|---|
| 0.5 | 360 |
| 0.75 | 540 |
| 1 | 720 |
| 1.25 | 900 |
| 1.5 | 1,080 |
| 2 | 1,440 |
Formula
ft² = katha × (square feet per katha in your region)Worked example
Inputs — Region: West Bengal / Bangladesh (720 ft²); Area in katha: 1.
Results — Area = 720 ft²; In square metres = 66.89 m²; In decimals (cents) = 1.653 cent; In acres = 0.0165 acre.
Frequently asked questions
How many square feet in 1 katha in West Bengal?
720 ft².
How many katha in a bigha in West Bengal?
20 katha.
Why do katha sizes differ?
They are customary units that evolved separately in each region.
What formula does the Katha to Square Feet Converter use?
ft² = katha × (square feet per katha in your region).
Sources
- Survey records of the respective state or district land department.