Math & Geometry
Triangle Calculator
Calculate triangle area from base and perpendicular height.
- Free to use
- Runs in your browser
- Level A · Standard formula
- Last reviewed 2026-08-16
Calculator guide
How to use the Triangle Calculator
Calculate triangle area from base and perpendicular height. Enter the requested values and select Calculate. The result and supporting values are produced locally in your browser.
Formula
Worked example
A triangle with base 10 and perpendicular height 6 has an area of 30 square units.
What to keep in mind
- Height must be measured perpendicular to the chosen base.
Methodology
This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Verify assumptions, units, and source values for your specific use case.
Review standard: Level A · Standard formula. How calculator reviews work.
Frequently asked questions
What does this calculator calculate?
Calculate triangle area from base and perpendicular height.
How is the result calculated?
Area = Base × Height ÷ 2.
Can I use the result for an important decision?
Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.
Does CalculateMeasure store the values I enter?
The calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.