📐 Square Feet of a Triangle Calculator
A triangle takes up exactly half the space of the rectangle that frames it, so its area is one half times base times height. Enter both measurements in feet and this calculator does the rest instantly.
Along with square feet, you also get the area in square meters and square yards, which is handy when comparing with metric plans or ordering materials priced per yard.
How to use this calculator
Enter the triangle's base and height in feet. The calculator returns the area in square feet, plus square meters and square yards.
- Type the Base in feet.
- Type the Height in feet (the perpendicular height).
- Read the square-foot area result instantly.
- Check the square-meter and square-yard conversions below it.
Frequently asked questions
What does the Square Feet of a Triangle Calculator compute?
It finds the area of a triangle from its base and height. You enter both in feet, and it returns the area in square feet along with square meters and square yards.
What is the formula behind it?
Area equals one half times base times height. A triangle fills exactly half of the rectangle formed by its base and height, which is where the one-half comes from.
Can you give a worked example?
A triangle with a 10 foot base and an 8 foot height has an area of 40 square feet, which is 3.72 square meters or 4.44 square yards.
Does the height have to be perpendicular?
Yes. The height must be measured at a right angle to the base, not along a slanted side. For a right triangle you can simply use the two legs as base and height.