Ellipse diameter calculator

Calculate the diameters of an ellipse based on its semi-major and semi-minor axes

Input Parameters

Calculation Results

Calculation Formula

Major diameter (A) = 2 × a

Minor diameter (B) = 2 × b

Where:
a = semi-major axis
b = semi-minor axis

Results

Major diameter (A):

-

Minor diameter (B):

-

Ellipse diameter calculator Calculator Usage Guide

Learn how to use the Ellipse diameter calculator and its working principles

How to use the calculator

  1. Enter the length of the semi-major axis (a) in the first input field. This is the longest radius of the ellipse.
  2. Enter the length of the semi-minor axis (b) in the second input field. This is the shortest radius of the ellipse.
  3. Click the "Calculate" button to compute the major and minor diameters.
  4. The results will be displayed in the Results section.

Understanding Ellipse Diameters

An ellipse is a geometric shape with two focal points, and it has two primary diameters:

  • Major diameter (A): The longest diameter of the ellipse, passing through both foci.
  • Minor diameter (B): The shortest diameter of the ellipse, perpendicular to the major diameter and passing through the center.

Formula

The diameters of an ellipse can be calculated using the following simple formulas:

A = 2 × a
B = 2 × b

Where A is the major diameter, B is the minor diameter, and a, b are the semi-major and semi-minor axes respectively.