Rectangle Area Calculator
Calculate the area of a rectangle or rectangular room instantly. Enter any consistent length and width units to get square units for flooring, landscaping, painting, or math homework.
Double-check measurements on-site before purchasing materials or signing contracts.
Examples
- Length 6 m and width 4 m ⇒ 24 m² of floor space.
- Length 12 ft and width 10 ft ⇒ 120 ft² (about 13.3 yd²).
- Length 2.5 m and width 1.4 m ⇒ 3.5 m² (ideal for a small balcony).
FAQ
Can I enter centimetres and metres together?
Use the same unit for both length and width. Convert measurements first to avoid incorrect totals.
Does orientation matter?
No. Length and width are interchangeable—the product is the same regardless of which side you call length.
How do I handle walls with recesses?
Break the shape into smaller rectangles or subtract the area of cut-outs before ordering materials.
Additional Information
- Formula: Area = Length × Width. The result inherits squared units from whatever unit you input.
- To convert square metres to square feet, multiply by 10.764. For square feet to square metres, multiply by 0.0929.
- If you are calculating material needs (tile, sod, paint), add 5–10% extra for waste and trimming.
- For irregular spaces, divide the layout into rectangles, calculate each area, and sum the results.