Math tools
Area Calculator
Calculate the area of rectangles, triangles, circles, trapeziums, parallelograms and more, with the formula displayed.
Free, no sign-up Works in your browser
Shape & dimensions
Area = w × h · Perimeter = 2(w + h)
Results
- Area
- 40
- Perimeter
- 26
- Diagonal
- 9.434
Units follow whatever you typed — squared for area, cubed for volume.