CALCULATOR
Equilateral Triangle Area Calculator
Find area of an equilateral triangle. Example: Side: 2 m gives 1.73205080757 m². All three sides equal. Flat Euclidean shape; stated measurements in displayed units. No waste, thickness, structural suitability or curved-earth claim. Floating point rounding is display only.
All three sides equal. Flat Euclidean shape; stated measurements in displayed units. No waste, thickness, structural suitability or curved-earth claim. Floating point rounding is display only. Derivation: Altitude √3 side/2 from Pythagoras; multiply base×height/2.
Accepted inputs: Side: 0.001 to 1,000 m.
How the calculation works
A = √3 side²/4
Worked example
With side 2 m, area of an equilateral triangle is 1.732050808 m².
Assumptions and limits
All three sides equal. Flat Euclidean shape; stated measurements in displayed units. No waste, thickness, structural suitability or curved-earth claim. Floating point rounding is display only. Derivation: Altitude √3 side/2 from Pythagoras; multiply base×height/2.