Plot area converter
One number in, the same plot out in gaj, square feet, square metres, acre and hectare — with the exact factor behind each unit shown.
| Breakdown | Value |
|---|
Estimate. The method and sources are on this page — check them against your own case before you act.
How it is calculated
Every Indian plot conversation mixes at least two units — gaj in the broker's message, square feet in the builder's plan, square metres on the registry. This converter goes through one base unit, square feet, so the result is consistent whichever pair you pick.
Square feet = area × unit factor · Result = square feet ÷ target unit factor
Convert the input to square feet
Multiply by the factor: 1 gaj = 9 sq ft, 1 sq m = 10.7639104 sq ft, 1 acre = 43,560 sq ft, 1 hectare = 107,639.1042 sq ft.
Divide by the target factor
To get gaj, divide square feet by 9; for square metres, divide by 10.7639104; for acres, divide by 43,560. The result table shows the same plot in every other unit at once.
Check against the registry figure
Sale deeds quote area in the unit used by the local sub-registrar. If your converted figure differs by more than rounding, check whether the deed uses bigha, which varies by state, or a local 'gaj' that is not exactly 9 sq ft.
Plot area units and exact factors
| Unit | Square feet | Square metres | Where you see it |
|---|---|---|---|
| 1 square foot | 1 | 0.0929 | Carpet and built-up area |
| 1 square metre | 10.7639 | 1 | Drawings, building bye-laws |
| 1 gaj (square yard) | 9 | 0.8361 | UP, Haryana and Punjab plots |
| 10 gaj | 90 | 8.36 | Small residential plots |
| 50 gaj | 450 | 41.81 | Plots in older colonies |
| 100 gaj | 900 | 83.61 | A common plot size in those states |
| 200 gaj | 1,800 | 167.23 | Independent house plots |
| 500 gaj | 4,500 | 418.06 | Larger residential plots |
| 1 acre | 43,560 | 4,046.86 | Agricultural land, large plots |
| 1 hectare | 107,639.10 | 10,000 | Revenue records, farm land |
| 1 square kilometre | 1,076,391.04 | 1,000,000 | Maps and land-use data |
| 1 bigha | Varies by state | Varies | Not converted — confirm locally |
What most pages get wrong
Gaj is just a square yard
One gaj is 9 square feet — a square 3 ft × 3 ft. The word is common in north Indian property deals even though the registry may record square metres.
An acre is 43,560 sq ft, always
Acre and hectare are fixed international units. A hectare is 10,000 m², which works out to about 2.471 acres — no local variation.
Bigha is the unit that breaks calculators
A bigha is not a fixed unit — it is defined locally and differs by state and even by district. This converter does not pretend to convert it; ask the local revenue office or sub-registrar what one bigha equals where the land is.
Use the unit on your sale deed
Builder brochures often use super built-up area, while the registry records the plot in square metres or gaj. Convert the number that legally describes the land, not the marketing number.
Frequently asked questions
How many square feet is 100 gaj?+
How do I convert gaj to square metres?+
How many gaj are in one acre?+
Is 1 hectare equal to 2.5 acres?+
Why does my plot area differ from the registry?+
Can I convert bigha with this calculator?+
Sources, dates and a changelog.
Every number this calculator uses is either an input you control or a value from the sources below. The formula is compiled and tested at build time, so the page cannot ship with a broken calculation.
Sources
This page
- Last verified: 29 October 2026
- Next review: 29 April 2027
- Vertical: Construction & Real Estate
- Build tests: 4 passed
- Changelog: 1 entry
How we handle errors
- Spotted a mistake? Report it — we correct and log it.
- Corrections appear in the changelog below.
- Read the methodology and the disclaimer.