Area of a Rectangle Calculator
⬛ Area & perimeter (2D). Use the Area of a rectangle formula to find area, length, width: pick the value you want, type the others, and the answer updates as you go.
Area24 cm²
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Area | cm² |
| Length | cm |
| Width | cm |
Worked example
Find the area when Length = 6 cm, Width = 4 cm.
Using A = l × w: Area = 24 cm².
Frequently asked questions
What is the formula for Area of a rectangle?
A = l × w.
What do the letters stand for, and what units are used?
Area in cm², Length in cm, Width in cm.
How do you calculate area?
Put the values into A = l × w. For example, with Length = 6 cm, Width = 4 cm, area = 24 cm².
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (area, length, width) and fill in the others: it rearranges the formula for you.
