Enter length and width to calculate rectangle area. For room measurements, you may prefer our Room Area Calculator. Results include automatic conversions to square meters, square feet, and acres.
Area represents the total surface inside a shape’s boundary. This calculator applies the standard geometry formula for this shape and multiplies the required dimensions together to produce the total area.
All calculations are performed instantly in your selected unit. Results are also converted automatically to square meters, square feet, and acres where relevant, making it easier to compare measurements across different projects.
A = L × W.
Yes. Use the same unit for both inputs to get correct results.
This page shows acres automatically (based on ft²).