CanvasRenderingContext2D: measureText() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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

Syntax

js
measureText(text)

Parameters

text

The text string to measure.

Return value

A TextMetrics object.

Examples

Given this <canvas> element:

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

… you can get a TextMetrics object using the following code:

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

let text = ctx.measureText("Hello world");
console.log(text.width); // 56;

Specifications

Specification
HTML
# dom-context-2d-measuretext-dev

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
measureText

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also