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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, i.e. it is 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. This value behaves mathematically like infinity; for example, any positive number multiplied by Infinity is Infinity, and anything divided by Infinity is 0.

Per 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.
Living Standard  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic Support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

See also

Document Tags and Contributors

 Last updated by: fscholz,