Room Area Calculator
Result
Room Area20.00 m²
Area (sq ft)215.28 sq ft
Perimeter18.00 m
↗ Construction
Room Area Calculator — free online calculator.
Formula
Area=Length×Width; Perimeter=2(Length+Width); square feet=m²×10.7639104167097
- Room area calculator. This page states the geometric relationship used by the calculator and provides a worked example.
- The main inputs are Room Length, Room Width. Enter them in the units and format shown in the calculator.
- Keep measurements and project assumptions consistent before comparing or combining values.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Room Area
Inputs
- Room Length: 5
- Room Width: 4
A 5 m by 4 m rectangular room has area 20 m².
Sample result: Calculating…
Frequently asked questions
What does the Room Area calculate?
For non-rectangular rooms, split the floor plan into simple shapes and add their areas.
Which values should I enter?
Enter Room Length, Room Width using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Area=Length×Width; Perimeter=2(Length+Width); square feet=m²×10.7639104167097.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.