Rectangle Area Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the length and width.
- Press Calculate for the area.
How it works
The area of a rectangle is length × width. With both sides in metres, the area is in square metres (m²).
Worked example
4 m × 3 m. Area = 4 × 3 = 12 m².
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.