Triangle Inradius (r)
Calculate Triangle Inradius (r) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Triangle Inradius (r)
a
b
c
Inradius r
1.633
More about: Triangle Inradius (r)
What it calculates
The “Triangle Inradius (r)” calculator computes Inradius r from 3 parameters: a, b, c.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters a = 5, b = 6, c = 7 the result is 1.63.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.