Trapezoid Calculator

Professional online calculators for all types of trapezoid calculations

12+

Calculators

Area

Calculations

Angle

Functions

All Types

Trapezoids

Special Trapezoid Types

Unsymmetrical Trapezoid

General trapezoid - calculation of all parameters from various inputs.

Isosceles Trapezoid

Symmetrical trapezoid with equal legs (b = d).

Right-Angled Trapezoid

Trapezoid with one right angle (90°) - simplified calculations.

Tri-Equilateral Trapezoid

Trapezoid with three equal sides - rare special form.

Area and Basic Calculations

Trapezoid Area

Classic area calculation from parallel sides and height.

Trapezoid Height from Sides and Area

Height calculation when area and parallel sides are known.

Trapezoid Height from Side and Angle

Height calculation via trigonometric functions from side and angle.

α = arcsin(h/d)

Trapezoid Angle from Side and Height

Angle calculation via arcsine function from height and side length.

Diagonal Calculations

Trapezoid Diagonal e from Sides and Height

Calculation of the first diagonal from side lengths and height.

Trapezoid Diagonal e from Sides and Angle

Diagonal calculation via law of cosines from sides and angles.

Trapezoid Diagonal f from Sides and Height

Calculation of the second diagonal from side lengths and height.

Trapezoid Diagonal f from Sides and Angle

Diagonal calculation via law of cosines from sides and angles.

What makes our trapezoid calculators special?

Versatile Methods

Various calculation approaches for all trapezoid types and available parameters.

Visual Representation

Graphical visualization of trapezoids with all calculated parameters.

Detailed Formulas

Comprehensive explanations of geometric formulas used and derivations.

Related Calculator Categories

2D Geometry

Related Areas

Mathematical Foundations of the Trapezoid

Geometric Properties

A trapezoid is a quadrilateral with one pair of parallel sides. Our calculators use trigonometric functions, area formulas and geometric relationships for precise calculations of all trapezoid parameters.

Practical Applications

Trapezoid calculations are essential in architecture, mechanical engineering, surveying, hydraulics and wherever trapezoidal shapes are used in technical constructions.

Calculation Methods

Depending on available parameters, various calculation approaches are available: Direct formulas for area and perimeter, trigonometric methods for angles and heights, as well as the law of cosines for diagonal calculations. Each calculator is optimized for specific use cases and provides precise results.

Quick Access for Common Calculations