Room and floor area calculator
Split the room into rectangles. Type one rectangle per line, like “4 x 3.5”. Add what to take away if needed.
Result
18 m²Area
- All rectangles together
- 18 m²
- Number of rectangles
- 2
- In the other unit
- 193.75 ft²
Inputs
- Measurement unit
- Metres
- Rectangles (one per line)
- 4 x 3.5 2 x 2
- To take away (optional)
- —
How it is calculated
Area of a rectangle = length × width.
Result
Area
- All rectangles together
- 18 m²
- Number of rectangles
- 2
- In the other unit
- 193.75 ft²
How it is calculated
- Area of a rectangle = length × width.
- Add up all the rectangles.
- Take away the areas to remove.
- 1 square foot = 0.09290304 m².
Example
An L-shaped room: 4 × 3.5 = 14 m² plus 2 × 2 = 4 m², so 18 m².
Good to know
- This is not an official measurement: legal living-area rules leave some parts out.
- For round or slanted shapes, split them into close rectangles.
Frequently asked questions
What is this tool used for?
Split the room into rectangles. Type one rectangle per line, like “4 x 3.5”. Add what to take away if needed.
How is the result calculated?
Area of a rectangle = length × width.
What should I check before using the result?
This is not an official measurement: legal living-area rules leave some parts out.