Area Calculator

Calculate area and perimeter for common shapes. Supports rectangles, triangles (base-height or Heron's formula), circles, and trapezoids with instant unit conversions.

Area Calculator
Shape Preview
20 ft15 ft
Area
300 sq ft
33.33 sq yd
Perimeter
70 ft
21.34 m
Area (metric)
27.87 sq m
43,200 sq in
Unit Conversions
Square Feet300 sq ft
Square Inches43,200 sq in
Square Yards33.33 sq yd
Square Meters27.87 sq m
Acres0.0069 acres
Perimeter (ft)70 ft
Perimeter (in)840 in
Perimeter (yd)23.33 yd
This calculator provides mathematical area and perimeter calculations. Results are theoretical and do not account for material waste, irregular shapes, or measurement tolerances in real-world construction projects.