Triangle Calculator
Area, perimeter and all three angles from the lengths of the three sides.
Good to know
How do I use the calculator?
Fill in the labelled fields and choose the units or options shown. The result updates when you change a value. The starting numbers are an example; replace them with your own.
How do I save the result?
Use Copy result to paste it into another app, or Download text to save a copy. Check your inputs and selected units before saving.
How should I read the result?
Check the input units and selected operation. The result is calculated from the values shown in the form.