Ellipse Circumference Calculator

The circumference of the ellipse is the total length of the boundary of the elliptical shape. In other words, we also refer to the perimeter of the ellipse as its circumference.

To calculate the ellipse circumference, we need to know the semi-major and semi-minor axes' lengths. Once we get these, we'd find the ellipse circumference using the following formula:

where:
— Semi-major axis of the ellipse; and
— Semi-minor axis of the ellipse.

To find the value of in the above equation, we will use the following formula:

Thus, using the above equations for ellipse circumference, we can find its approximate value.

To find the ellipse circumference using our calculator, you need to do the following:

1. Enter the value of the semi-major axis (a).
2. Enter the value of the semi-minor axis (b).
3. Voila! The tool will perform all the heavy computing to calculate the ellipse circumference and will display it as the result!

Circles and Ellipses
Do you know, an ellipse with equal major and minor axes is a circle. Learn more about circles using our dedicated tools for equation of a circle calculator, unit circle calculator, and area of a circle calculator.

If you found this tool useful, you may also want to check out our vast range of calculators related to ellipse:

• Ellipse calculator;
• Ellipse area calculator;
• Center of ellipse calculator;
• Ellipse perimeter calculator; and
• Foci of an ellipse calculator.