Util Monster
Free
Calculate triangle area, perimeter, and angles using various input methods. Enter three sides, base and height, or two sides and included angle to automatically calculate all properties.
Whether you know only the three side lengths, just the base and height, or two sides and their included angle, you can calculate all triangle properties. Using Heron's formula and trigonometry for accurate area, perimeter, and angles.
Along with calculation results, the triangle type is automatically displayed. Distinguishes between equilateral, isosceles, and scalene triangles, and also identifies right, acute, and obtuse triangles. Useful for geometry learning and architectural design.
Intuitive visualization lets you see triangle side lengths and angles at a glance. Results are shown both numerically and graphically for easy understanding.
Triangle calculations are essential in architecture and civil engineering for roof slope calculations, stair design, and land area measurement. Accurate angle and area calculations enable efficient design work.
Useful for learning triangle properties in middle and high school geometry classes. Apply Heron's formula, law of cosines, and law of sines to understand mathematical concepts in practice.
Responsive design works conveniently on smartphones, tablets, and PCs. When you need immediate calculations on-site, quickly access from mobile devices to enter measurements and view results.