Triangle Height Calculator
Find a triangle's height from its base and area.
Change the values and press Calculate to work out your own figures.
Enter the base and the area.
Show the working
- A = ½ b h, so h = 2A ÷ b
- h = 2 × 25 ÷ 10 = 5
How to use it
Enter the base and the area.
Enter the values you know (decimals, fractions, surds such as 2√5, or angles such as π/3 in radians). Show the working gives the rule used at each step.
Key facts
h = 2A ÷ b
Any side as the base
Every side has its own height; the triangle calculator lists all three.
Questions
What is the height with base 10 and area 25?
5.
Why double the area?
Because the area is half base × height.
Formulas
h = 2A ÷ b
Sources
Limitations
- Angles can be typed in degrees or radians; radians may be written with π (π/3, 2pi/3).