For a rectangular plot, multiply the front by the depth. A 25 x 45 ft plot is 1,125 sq ft, which is 5 marla on the 225 sq ft marla. For a plot with four unequal sides, measure one diagonal as well: it splits the plot into two triangles, and their areas add up to the exact area.
Enter the sides and pick the marla size used in your area. Without a diagonal, the calculator gives the rough estimate that averages opposite sides, and tells you it is only an estimate.
How to calculate square feet
For any rectangle, square feet = length in feet × width in feet. Measure both sides with a tape, multiply, and you have the area. Choose Rectangle in the calculator for this.
Square feet of a room
A bedroom that measures 12 ft by 14 ft is 12 × 14 = 168 sq ft.
Tapes often give feet and inches. Turn the inches into a fraction of a foot by dividing by 12, then multiply. A room of 12 ft 6 in by 14 ft 3 in:
- 6 inches ÷ 12 = 0.5, so the width is 12.5 ft.
- 3 inches ÷ 12 = 0.25, so the length is 14.25 ft.
- 12.5 × 14.25 = 178.13 sq ft.
For an L-shaped room, split it into two rectangles and add them. A 12 × 14 ft room with a 6 × 8 ft alcove is 168 + 48 = 216 sq ft. Measure at floor level, wall to wall, and leave out the thickness of the walls.
From metres or gaz
Multiply in the unit you measured, then convert, or set Sides measured in and let the calculator convert. A room of 3.5 × 4 m is 14 square metres, about 150.7 sq ft. A plot of 10 × 20 gaz is 200 square yards, which is 1,800 sq ft or 8 marla on the 225 sq ft marla.
How to find the area of an irregular plot
Four sides alone do not fix the area of a plot: the same four sides can make a rectangle or a slanted shape with less area. A diagonal fixes the shape.
Take the example loaded above: front 30 ft, right side 62 ft, back 32 ft, left side 60 ft, and the diagonal from the front left corner to the back right corner 69 ft.
- Triangle 1 (front, right side, diagonal): sides 30, 62 and 69. Half the perimeter s = 80.5. Area = √(80.5 x 50.5 x 18.5 x 11.5) = 930.0 sq ft.
- Triangle 2 (back, left side, diagonal): sides 32, 60 and 69. s = 80.5. Area = √(80.5 x 48.5 x 20.5 x 11.5) = 959.4 sq ft.
- Plot area: 930.0 + 959.4 = 1,889.4 sq ft, which is 209.9 square yards or 8.40 marla of 225 sq ft.
The formula in steps 1 and 2 is Heron's formula: area = √(s(s − a)(s − b)(s − c)), where s is half the sum of the three sides.
The average of opposite sides method
Property dealers and patwaris often estimate an irregular plot by averaging the opposite sides: ((front + back) / 2) x ((left + right) / 2). For the plot above that gives 31 x 61 = 1,891 sq ft, very close, because its corners are nearly square.
The method is never below the true area and can be well above it when the plot is slanted. A plot with sides 40, 60, 40 and 60 ft is 2,400 sq ft if the corners are square. If it leans so that the diagonal is 80 ft instead of 72.1 ft, its true area is 2,323.8 sq ft, but averaging the sides still says 2,400. That is 76 sq ft, a third of a marla, that you would pay for and not get. Measure a diagonal before you pay by the marla.
Common measuring mistakes
- Mixing feet and inches. 12 ft 6 in is 12.5 ft, not 12.6 ft. Typing 12.6 adds more than a square foot to a small room and much more to a plot.
- Measuring along a slope or over a boundary wall. Measure the level ground inside the plot line, as the site plan does.
- Averaging the sides of a slanted plot. It overstates the area, as shown above. Take a diagonal instead.
- Quoting marla without saying which marla. The same 1,800 sq ft is 8 marla at 225 sq ft but 6.61 marla at 272.25 sq ft. Agree the marla size before you agree a price per marla.
Marla and kanal in square feet
| Size | 225 sq ft marla | 250 sq ft marla | 272.25 sq ft marla |
|---|---|---|---|
| 1 marla | 225 sq ft | 250 sq ft | 272.25 sq ft |
| 3 marla | 675 sq ft | 750 sq ft | 816.75 sq ft |
| 5 marla | 1,125 sq ft | 1,250 sq ft | 1,361.25 sq ft |
| 7 marla | 1,575 sq ft | 1,750 sq ft | 1,905.75 sq ft |
| 10 marla | 2,250 sq ft | 2,500 sq ft | 2,722.50 sq ft |
| 1 kanal (20 marla) | 4,500 sq ft | 5,000 sq ft | 5,445 sq ft |
Most housing societies use the 225 sq ft marla. Revenue records such as the fard use 272.25 sq ft. For other conversions see marla to square feet, square feet to marla and kanal to marla.
Plot area questions
How do I calculate square feet of a room?
Measure the length and width in feet and multiply them. A 12 × 14 ft room is 168 sq ft. If the tape shows inches, divide the inches by 12 first: 12 ft 6 in is 12.5 ft. For an L-shaped room, split it into two rectangles and add the two areas.
How do I calculate the area of a plot in marla?
Multiply the length by the width in feet to get sq ft, then divide by the marla size: 225 for most housing societies or 272.25 for revenue land. A 30 x 60 ft plot is 1,800 sq ft, which is 8 marla at 225 or 6.61 marla at 272.25.
Zameen ki pemaish kaise karein?
Zameen ki pemaish means measuring land. For a rectangular plot, multiply the front by the depth in feet and divide by the marla size used in your area, 225 or 272.25 sq ft. For a plot with four unequal sides, measure one diagonal too and choose "Four unequal sides" in this zameen calculator for the exact area.
How do I measure a plot with unequal sides?
Measure all four sides and one diagonal, corner to corner. The diagonal splits the plot into two triangles whose areas you can work out from their sides. Add them for the exact area. Without a diagonal, averaging opposite sides only gives an estimate that can be too high.
How many square yards (gaz) is a plot?
Divide the area in sq ft by 9. A 1,125 sq ft plot is 125 square yards. In Karachi and much of Sindh plots are sold in square yards, for example 120 or 240 yards, rather than marla. Our marla to gaz converter does the reverse.
Last reviewed 2 October 2026. Results are estimates; official notices always take precedence.