Triangle Area Calculator
Triangle area calculator
Find triangle area from base and height.
InputsForm2 fieldsLive
Result
30 sq units
Using A = 1/2 × base × height.
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math
Formula
A = (base x height) / 2 Symbol legend
| Symbol | Meaning | Unit | Copy |
|---|---|---|---|
A | Triangle area | square units | |
b | Triangle base length | length | |
h | Perpendicular height to base | length |
- Multiply base by perpendicular height.
- Divide that product by 2.
- Report the result in square units.
Example
Worked example: base = 10, height = 6
- 1 base x height = 10 x 6 = 60
- 2 A = 60 / 2
- 3 A = 30
The triangle area is 30 square units.
How
- Enter the base length.
- Enter the corresponding perpendicular height.
- Read the computed area in square units.
Avoid
- Using a slanted side instead of perpendicular height.
- Forgetting to divide by 2 after base times height.
- Mixing length units between base and height.
FAQ
Does base have to be horizontal?
No. Any side can be the base as long as height is perpendicular to that base.
Can I use decimal dimensions?
Yes, decimal base and height values are supported.
What unit does area use?
Area is reported in squared units based on your input length unit.
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