Rectangle area
Your result20 m²
5 × 4
Area = length × width
For a rectangular room, multiply its length by its width using the same unit.
Worked example
A 4 m × 3 m room is 12 m². For an L-shaped room, split it into nonoverlapping rectangles, calculate each area, and add them.
Try it with your own numbers
Use the Room Area Calculator to check another example. Read the input labels carefully and keep units consistent.
Before you use the answer
Choose the correct starting quantity and keep full precision until the final step. An arithmetic result describes the numbers entered; the usefulness of the result depends on accurate measurements and the assumptions in the calculation.
