Math

Basic Area Calculator

Calculate area of basic geometric shapes: rectangle, triangle, circle, square

Shape*

Length*

Width*

Area

15.00sq units

Calculated area of the shape

Perimeter

16.00units

Perimeter of the shape

Formula Used

A = l × w = 5 × 3

Mathematical formula used for calculation

Rectangle: A = l * w
Square: A = s²
Triangle: A = ½ * b * h
Circle: A = πr²

Supported inputs

Input	Description
Shape	Select the geometric shape Rectangle · Square · Triangle · Circle · Parallelogram · Trapezoid
Length	Length of the shape
Width	Width of the shape
Side Length	Length of one side of the square
Base	Base of the triangle
Height	Height of the shape
Radius	Radius of the circle
Top Base	Length of the top base of the trapezoid

Formula

Rectangle: A = l * w
Square: A = s²
Triangle: A = ½ * b * h
Circle: A = πr²

More calculators selected by category and topic.

Related Tags: