How it works
Find the height and area from an equal side and base. The base must be shorter than twice the equal side.
h = √(a²−b²/4); A = bh/2
Worked example
Show example inputs and result
Equal side: 5 · Base: 6.
- Area
- 12
- Height
- 4
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy