Areas Calculator
Triangle
Base = 0
Height = 0
Triangle's Area =
Square
Side = 0
Square's Area =
Rectangle
Length = 0
Width = 0
Rectangle's Area =
Polygon
Sides = 8
Length = 0
Polygon's Area =
Circle
Radius = 0
Circle's Area =
Ellipse
Short Axis Radius = 0
Long Axis Radius = 0
Ellipse's Area =
Help
Calculate the area of triangles, squares, rectangles, octagons, circles and ellipses. Inputs and results are in any available area unit. For results, select the row and choose an alternative unit type.
Triangle
- Base: Width of the bottom of the triangle
- Height: Height of the triangle from base to point
Square
- Side: Length of one side of the square
Rectangle
- Length: Length of one side of a rectangle
- Width: Length of the other side of a rectangle
Polygon
- Sides: number of sides where all sides are the same length
- Length: length of one edge of the regular polygon
Circle
- Radius: Radius of the circle, length from one edge to the opposite
Ellipse
- Short Axis Radius: Radius, length from one edge to the other, of the shorter side
- Long Axis Radius: Radius, length from one edge to the other, of the longer side
Examples
The room is 5'6" by 14'3". How many square feet is the room?
In the Rectangle section:
- Length: 5ft 6in
- Width: 14ft 3in
The area of the room is 78.38ft². If the result is not in square feet, select the Rectangle's Area row and choose ft².
Keywords
Base
Height
Triangle's Area
Side
Square's Area
Length
Width
Rectangle's Area
Sides
Length
Polygon's Area
Radius
Circle's Area
Short Axis Radius
Long Axis Radius
Ellipse's Area
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