# CanvasRenderingContext2D.ellipse()

The `CanvasRenderingContext2D``.ellipse()` method of the Canvas 2D API adds an elliptical arc to the current sub-path.

## Syntax

``````void ctx.ellipse(x, y, radiusX, radiusY, rotation, startAngle, endAngle [, counterclockwise]);
``````

The `ellipse()` method creates an elliptical arc centered at `(x, y)` with the radii `radiusX` and `radiusY`. The path starts at `startAngle` and ends at `endAngle`, and travels in the direction given by `counterclockwise` (defaulting to clockwise).

### Parameters

`x`
The x-axis (horizontal) coordinate of the ellipse's center.
`y`
The y-axis (vertical) coordinate of the ellipse's center.
`radiusX`
The ellipse's major-axis radius. Must be non-negative.
`radiusY`
The ellipse's minor-axis radius. Must be non-negative.
`rotation`
The rotation of the ellipse, expressed in radians.
`startAngle`
The angle at which the ellipse starts, measured clockwise from the positive x-axis and expressed in radians.
`endAngle`
The angle at which the ellipse ends, measured clockwise from the positive x-axis and expressed in radians.
`counterclockwise` Optional
An optional `Boolean` which, if `true`, draws the ellipse counterclockwise (anticlockwise). The default value is `false` (clockwise).

## Examples

### Drawing a full ellipse

This example draws an ellipse at an angle of π/4 radians (45°). To make a full ellipse, the arc begins at an angle of 0 radians (0°), and ends at an angle of 2π radians (360°).

#### HTML

``````<canvas id="canvas" width="200" height="200"></canvas>
``````

#### JavaScript

``````const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

// Draw the ellipse
ctx.beginPath();
ctx.ellipse(100, 100, 50, 75, Math.PI / 4, 0, 2 * Math.PI);
ctx.stroke();

// Draw the ellipse's line of reflection
ctx.beginPath();
ctx.setLineDash([5, 5]);
ctx.moveTo(0, 200);
ctx.lineTo(200, 0);
ctx.stroke();
``````

### Various elliptical arcs

This example creates three elliptical paths with varying properties.

#### HTML

``````<canvas id="canvas"></canvas>
``````

#### JavaScript

``````const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');

ctx.fillStyle = 'red';
ctx.beginPath();
ctx.ellipse(60, 75, 50, 30, Math.PI * .25, 0, Math.PI * 1.5);
ctx.fill();

ctx.fillStyle = 'blue';
ctx.beginPath();
ctx.ellipse(150, 75, 50, 30, Math.PI * .25, 0, Math.PI);
ctx.fill();

ctx.fillStyle = 'green';
ctx.beginPath();
ctx.ellipse(240, 75, 50, 30, Math.PI * .25, 0, Math.PI, true);
ctx.fill();
``````

## Specifications

Specification Status Comment
HTML Living Standard
The definition of 'CanvasRenderingContext2D.ellipse' in that specification.
Living Standard

## Browser compatibility

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