Math & Statistics
Heron's Formula Calculator
Find a triangle's area from its three side lengths.
Your inputs
Change any value to update the result instantly.
Area
14.6969
Semi-perimeter
9
Perimeter
18
Formula and working
Area = √(s(s−a)(s−b)(s−c)), s = (a+b+c)/2
- 1
Collect the inputs
Side a = 5; Side b = 6; Side c = 7
- 2
Apply the formula
Area = √(s(s−a)(s−b)(s−c)), s = (a+b+c)/2
- 3
Result
Area = 14.6969
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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