Area Calculator

Rectangle: A = w × h
Square: A = s²
Circle: A = πr² (use radius; if you have diameter d , then r = d/2 )
Triangle: A = (b × h) / 2
Trapezoid: A = (A + B) / 2 × h (A and B are the two parallel sides)
Units: Inputs use a linear unit (m, cm, mm, ft, in, yd). Results include multiple area units (m², cm², mm², ft², in², yd²).
Precision tip: Keep consistent units across all dimensions for a shape.

Inputs below use this unit; results show multiple area units.