Everyday tool
Triangle Calculator from Three Sides
Enter side lengths a, b and c in the same unit. The tool checks the triangle inequality.
Runs in your browser. No upload.
Values are processed locally in this browser.
Result
About this tool
Triangle Calculator from Three Sides made simple.
This mode solves only the three-sides-known case, avoiding ambiguous side-angle configurations. Angles are reported in degrees.
Common questions
About Triangle Calculator from Three Sides.
How do I use Triangle calculator?
Enter side lengths a, b and c in the same unit. The tool checks the triangle inequality.
Is my data uploaded to a server?
No. This tool runs locally in your browser. Your input is not uploaded.