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The global Infinity property is a numeric value representing infinity.

Property attributes of Infinity
Writable no
Enumerable no
Configurable no




Infinity is a property of the global object, or in other words, a variable in global scope.

The initial value of Infinity is Number.POSITIVE_INFINITY. The value Infinity (positive infinity) is greater than any other number. Mathematically, this value behaves the same as infinity; for example, any positive number multiplied by Infinity equals Infinity, and any number divided by Infinity equals 0.

As defined by the ECMAScript 5 specification, Infinity is read-only (implemented in JavaScript 1.8.5 / Firefox 4).


console.log(Infinity          ); /* Infinity */  
console.log(Infinity + 1      ); /* Infinity */  
console.log(Math.pow(10, 1000)); /* Infinity */  
console.log(Math.log(0)       ); /* -Infinity */  
console.log(1 / Infinity      ); /* 0 */  


Specification Status Comment
ECMAScript 1st Edition (ECMA-262) Standard Initial definition. Implemented in JavaScript 1.3
ECMAScript 5.1 (ECMA-262)
The definition of 'Infinity' in that specification.
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Infinity' in that specification.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Infinity' in that specification.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes Yes1 Yes Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes Yes4 Yes Yes ?

See also

Document Tags and Contributors

 Last updated by: chrisdavidmills,