120
11.15
360
0.34
6
120
11.15
360
0.34
6
This Square Footage Calculator helps you calculate area for rooms, flooring, paint, and renovation planning. Pick a shape (rectangle, triangle, or circle), choose feet or meters, and instantly get total area in sq ft and sq m.
Bonus outputs help with real projects: an estimated total cost, paint gallons, and flooring boxes.
We use standard geometry formulas:
Then we multiply by the number of rooms and convert between square feet and square meters.
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Results
Rectangle area = 12 × 10 = 120 sq ft.
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Results
Each room = 12 sq m. Two rooms = 24 sq m = ~258.33 sq ft.
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Results
Circle area = π × 5² ≈ 78.54 sq ft.
Multiply the room’s length by its width. Example: 12 ft × 10 ft = 120 sq ft.
1 square meter is about 10.7639 square feet.
Calculate the area of one room and multiply by the number of rooms. If rooms differ in size, calculate each separately and add them.
A common estimate is about 350 sq ft per gallon per coat. Surfaces, texture, and paint type can change coverage.
Divide total square footage by the coverage per box (often 20 sq ft). Always add extra (waste factor) for cuts and mistakes.
Yes. For flooring, many people add 5–15% extra depending on room shape and installation pattern.
Square feet are commonly used in the USA. Square meters are used in most other countries. This calculator shows both.
Yes. Use the circle or triangle mode and enter the required measurements.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
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