This square footage calculator finds the square footage of a house, room, property, lot or land with any of the following shape rectangle, triangle, trapezoid, square, circle or rhombus.
Square footage formulas
The algorithm behind this square footage calculator uses the following formulas depending on the shape:
- Triangle SF can be obtained if the 3 sides of the it are known:
SF triangle = Square root(S * (S - Edge 1) * (S - Edge 2) * (S - Edge 3))
Where S = (Edge 1 + Edge 2 + Edge 3) / 2
- Rectangle requires the width and the length of the rectangle to be given:
SF rectangle = Length * Width
- Square requires that its side to be provided:
SF square= Side * Side
- Trapezoid calculation requires that the top edge, bottom edge, left side and right side to be known:
SF trapezoid = Height * (top edge + bottom edge) / 2
Where:
Height = (Square root(s * (s - l1) * (s - l2) * (s - l3))) / l3
l1 = left side
l2 = right side
l3 = bottom edge – top edge
s = (l1 + l2 + l3) / 2
- Circle SF can be estimated in case the circle radius is known:
SF circle = π * Radius * Radius
Where: π = 3.14159265359
- Rhombus requires that the base and its height to be given:
SF rhombus = Base * Height
Where:
SF = square footage
16 Apr, 2015 | 1 comments
1 Comments To This Article
RANDY MORTON
on Apr 22nd , 2015 at 14:59
#1This is a very convenient tool. Thanks so much for making it available.