`A = f( "a" , "b" , "c" , "d" , "D" )`

Enter a value for all fields

The Area of Quadrilateral calculator computes the area of a      Simple Quadrilateralsimple quadrilateral given the four sides and the length of a diagonal between opposing corners.  

INSTRUCTIONS: Choose units and enter the following:

• (a) - length of side a
• (b) - length of side b
• (c) - length of side c
• (d) - length of side d
• (D) - the length of the diagonal  (See Diagram)

Area of a Quadrilateral (A): The area (A) is returned in square meters.  However, this can be automatically converted to many other area units (e.g. square inches) via the pull-down menu.

Quadrilateral Calculators

• Area of a Quadrilateral from four sides and an angle
• Area of a Quadrilateral from four sides and the diagonal
• Quadrilateral Perimeter
• Quadrilateral Semi-Perimeter
• Quadrilateral Volume

Usage

The Area of Quadrilateral calculator is good for computing the amount of land within a four-sided fence.  In this case, measure the four sides and the diagonal, and this calculator will compute the area in the fence. 

For other area calculators, see the following:

• Area of a Circle - Multiple functions to compute the area of a circle or portions of a circle.
• Area of Triangle -  Three Sides
• Area of Quadrilateral - Four Sides
• Area of Pentagon - Five Sides
• Area of Hexagon - Six Sides
• Area of Heptagon - Seven Sides
• Area of Octagon - Eight Sides
• Area of Nonogon - Nine Sides
• Area of Decagon - Ten Sides
• Area of Hendecagon - Eleven Sides
• Area of Dodecagon - Twelve Sides
• Area of Polygon  -  Any number of sides (n).