Shape
Square
Rectangle
Triangle (base and height)
Triangle (three sides)
Circle
Semicircle
Ellipse
Trapezoid
Parallelogram
Regular polygon
Circle sector
Unit
Centimeters (cm)
Meters (m)
Inches (in)
Feet (ft)
Side length
Length
Width
Base
Parallel side a
Parallel side b
Height
Perpendicular distance, not a slanted side.
Side a
Side b
Side c
Radius
Half the diameter.
Sector angle
°
Semi-major axis (a)
Half the longest width.
Semi-minor axis (b)
Half the shortest width.
Number of sides
Side length
Calculate
Area (m²)
15
Square feet
161.4587
Hectares
0.0015
A = l × w = 5 × 3 =
15 m²
Area Calculator
· free calculator by
CalcWorthy