CanvasRenderingContext2D.measureText()

The CanvasRenderingContext2D.measureText() method returns a TextMetrics object that contains information about the measured text (such as its width for example).

Syntax

ctx.measureText(text);

Parameters

text
The text to measure.

Return value

A TextMetrics object.

Examples

Given this <canvas> element:

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

You can get a TextMetrics object using the following code:

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");

var text = ctx.measureText("foo"); // TextMetrics object
text.width; // 16;

Specifications

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

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) 9 (Yes) (Yes)
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

See also

Document Tags and Contributors

 Contributors to this page: erikadoyle, fscholz
 Last updated by: erikadoyle,