Measured in
Or convert an area you already know
Work out the area of a room, flat or plot in square feet, then convert it to square metres, gaj, cents, guntha, acres and other Indian land units.
Example: a room 12 ft 6 in × 10 ft is 12.5 × 10 = 125 sq ft. For L-shaped rooms, split them into rectangles, add each as a separate row, and the total is added up for you.
| Unit | Square feet | Used mostly in |
|---|---|---|
| 1 square metre | 10.764 | All India (official) |
| 1 square yard / gaj | 9 | North India, Hyderabad |
| 1 marla | 272.25 | Punjab, Haryana, J&K |
| 1 cent | 435.6 | Kerala, Tamil Nadu, Karnataka, AP |
| 1 guntha | 1,089 | Maharashtra, Karnataka, Telangana |
| 1 ground | 2,400 | Tamil Nadu (Chennai) |
| 1 kanal | 5,445 | Punjab, Haryana, Himachal |
| 1 acre | 43,560 | All India |
| 1 hectare | 1,07,639 | All India (official) |
Bigha and biswa vary widely from state to state (a bigha can be anything from about 14,400 to 27,000 sq ft), so check the local value with your land records office.
Carpet area is the usable floor inside the walls. Built-up area adds the wall thickness and balconies (usually 10–15% more). Super built-up adds a share of common areas like lobbies and lifts (often 25–35% more than carpet). Under RERA, flats must be sold on carpet area.
Divide the floor area by the area of one tile, then add 5–10% for cutting and breakage. A 2 ft × 2 ft tile covers 4 sq ft, so a 125 sq ft room needs about 32 + 10% ≈ 35 tiles.
Split it into rectangles and triangles. Add the rectangles here; a triangle's area is half of base × height. For legal use, rely on a licensed surveyor.