Room Area Calculator
Calculate floor, ceiling, wall area and perimeter while subtracting doors and windows.
🛡 Privacy-first⚡ Fast🔓 No signup📱 Mobile friendly
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⚠️ Results are estimates for takeoff and planning. Do not use them as a substitute for structural design, specifications or local building codes; consult a qualified professional when required.
🔎 Calculate floor, wall and ceiling area from room dimensions
Enter room length, width and height to calculate floor and ceiling area, perimeter and total wall area.
You can subtract door and window openings when estimating wall finishes such as paint, plaster or cladding.
- Floor and ceiling area.
- Wall area and room perimeter.
- Optional deduction for openings.
💡 Useful information
Calculate room floor area, wall area, ceiling area and perimeter from length, width and height, with optional deduction for doors and windows.
- Runs directly in a modern browser.
- Works on phones and desktop computers.
- Reuse it without creating an account.
ℹ️ How to use
- Enter your data or choose the required file.
- Adjust the available options.
- Run the tool and review the result.
- Copy or download the result when needed.
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