Area Calculator

The following are calculators to evaluate the area of 7 most common shapes. The area of other shape usually can be obtained by cutting it into many simple shapes and adding the areas up. This calculator is especially useful for estimating the land area.

Rectangle

Length:
Edge:

Triangle

Edge 1:
Edge 2:
Edge 3:

Use the triangle calculator to convert if you only know other parameters of a triangle instead of the length of the three edges.

Trapezoid

Top Edge:
Bottom Edge:
Height:

Circle

Radius:

Sector

Radius:
Angle:

Ellipse

Major Axes:
Minor Axes:

Parallelogram

Base:
Height:

RelatedSurface Area Calculator | Volume Calculator


Reference

Area Formulas of Simple Shapes

Rectangle Area

Triangle Area

Trapezoid Area

Circle Area

Sector Area

Ellipse Area

Parallelogram Area

Common Area Units

UnitArea in m2
square meterSI Unit
hectare10,000
square kilometre (km2)1,000,000
square foot0.0929
square yard0.8361
acre4,046.9 (43,560 square feet)
square mile2,589,988 (640 acres)