Ellipse Calculator

Use our free ellipse calculator to find the area of an ellipse.

Math

Semi-Major Axis (a)

Semi-Minor Axis (b)

Formula

An ellipse is an oval shape defined by two axes. Area = πab.

A = πab

Percentage: The percentage value you want to apply

Number: The original number or value

Result: The calculated result

How It Works

1Enter a (semi-major).
2Enter b (semi-minor).
3Click Calculate.

Examples

a=8, b=5

1.A=π×8×5=40π≈125.66 units².

Result: 125.6637 units²

a=10, b=4

1.A=π×10×4=40π≈125.66 units².

Result: 125.6637 units²

Frequently Asked Questions

An elongated circle defined by two focal points.

Half of the longest diameter.

Half of the shortest diameter.

A = πab.

It is a circle: A = πr².

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CalculateMe Team

Last updated: 2026-07-14

Ellipse Calculator

Formula

How It Works

Examples

a=8, b=5

a=10, b=4

Frequently Asked Questions

What is an ellipse?

What is semi-major axis?

What is semi-minor axis?

Area formula?

If a=b?

Related Calculators

Ellipse Calculator

Formula

How It Works

Examples

a=8, b=5

a=10, b=4

Frequently Asked Questions

What is an ellipse?

What is semi-major axis?

What is semi-minor axis?

Area formula?

If a=b?

Related Calculators