Calculate the area of any triangle using base and height. Perfect for land surveying, architecture, art, sewing patterns or school geometry problems.
Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.
Enter job values, review the estimate, then use the decision hints before ordering or quoting.
Base of the triangle
Perpendicular height
Area = (base × height) / 2Base — any side, height — perpendicular distance from opposite vertex to that base.
For equilateral: Area = (side² × √3) / 4
Keep equilateral triangle area calculator math tidy when a plan, worksheet, or note set needs one quick calculation.
Keep heron area calculator math tidy when a plan, worksheet, or note set needs one quick calculation.
This calculator is meant for repeatable answers when the same shape or algebra pattern shows up again around triangle altitude.