Triangle Area Calculator
Calculate the area of a triangle from its base and height.
Inputs
units
units
Area
30.0000sq units
Step by step
Apply formula
A = ½ × 10 × 6
= 30
How it works
The area of a triangle is half the product of its base and perpendicular height. This applies to any triangle regardless of shape.
Formula
Triangle Area
A = ½ × base × height
- b
- Length of the base
- h
- Perpendicular height to the base
Frequently Asked Questions
Does it matter which side I pick as the base?
No. Any side can be the base, as long as you use the perpendicular height to that side.
What if I only know three sides?
Use Heron's Formula instead, which computes area from three side lengths without needing the height.