Triangle Area Calculator
Area of any triangle from its base and perpendicular height.
Results
Area
12
m²
What this tool does
Half of base times height works for every triangle, not just right-angled ones. The height must be measured perpendicular to the base, which for a slanted triangle is not the same as the length of a side — a common source of wrong answers.
Formula
A = ½ × b × h
Variables
| Symbol | Meaning | Unit |
|---|---|---|
b | Base | m |
h | Height | m |
A | Area | m² |
Worked example
- Base6 m
- Height4 m
- Area12 m²
Limitations
- Mixing units is the most common source of error. Convert every input to the units shown next to each field before calculating.