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


TextMetrics ctx.measureText(text);


The text to measure.

Return value

A TextMetrics object.


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;


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes Yes9 Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes Yes Yes Yes ?

See also

Document Tags and Contributors

 Contributors to this page: fscholz, thatmichael85, nmve, erikadoyle
 Last updated by: fscholz,