Triangle Calculators

Professional online calculators for all types of triangle calculations

11+

Calculators

Area

Calculations

Angle

Functions

All Types

Triangles

Special Triangle Types

Equilateral Triangle

All sides equal - calculate area, perimeter and all properties.

Isosceles Triangle

Two equal sides - calculate all triangle parameters.

Right Triangle (2 Sides)

Right triangle with two known sides - apply Pythagorean theorem.

Right Triangle (Side + Angle)

Right triangle with one known side and one angle.

Isosceles Right Triangle

45°-45°-90° triangle with two equal legs.

Area Calculations

Area from Base and Height

Classic area calculation using base and height.

A = ½ab sin(C)

Area from 2 Sides and 1 Angle

Area calculation using sine rule with two sides and included angle.

Area from 1 Side and 2 Angles

Area calculation from one side and two adjacent angles.

Triangle, Incircle (3 Sides)

Heron's formula for area calculation from all three side lengths.

Advanced Functions

Triangle Vertices (3 Points)

Complete analysis of triangle with three given coordinate points.

Bisector of a Triangle

Calculate medians and centroid of triangles.

What makes our Triangle Calculators special?

Precise Calculations

High-precision mathematical algorithms for exact results with all triangle types.

Visual Representation

Graphical visualization of triangles with all calculated parameters.

Learning Support

Detailed explanations of formulas and calculation methods used.

Related Calculator Categories

2D Geometry

Related Areas

Mathematical Foundations

Trigonometry and Geometry

Our calculators use classical trigonometric functions, Pythagorean theorem, law of sines and cosines for precise triangle calculations in all variants.

Practical Applications

These tools are essential in architecture, surveying, mechanical engineering, navigation and anywhere precise triangle calculations are required.