Calculating the area of a triangle

Method 1: a * h / 2

Width of Triangle (a)



Height of Triangle (h)
Select Unit of Measure
Metres
Yards
Feet
Inches
Centimetres

Kilometres
Miles
Area of Triangle =



Which also equates to:












Method 2: Where Perpendicular Height (h) is unknown - a * b * sin(C) / 2

Width of Triangle (a)



Length of side (b)



Angle of (c)



COS Angle (c)



Select Unit of Measure
Metres
Yards
Feet
Inches
Centimetres

Kilometres
Miles
Area of Triangle =



Which also equates to:













Index of Area Calculators