JavaScript parseFloat()
Examples
Parse different values:
parseFloat(10);
parseFloat("10");
parseFloat("10.33");
parseFloat("34 45 66");
parseFloat("He was 40");
Try it Yourself »
parseFloat("10");
parseFloat("10.33");
parseFloat("34 45 66");
parseFloat("He was 40");
More examples below.
Description
The parseFloat() method parses a value as a string and returns the first number.
Notes
If the first character cannot be converted, NaN is returned.
Leading and trailing spaces are ignored.
Only the first number found is returned.
Syntax
parseFloat(value)
Parameters
Parameter
Description
value
Required.
The value to parse.
The value to parse.
Return Value
Type
Description
A number NaN if no number is found.
Browser Support
parseFloat() is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |
More Examples
Parse different values:
parseFloat("40.00");
parseFloat(" 40 ");
parseFloat("40 years");
parseFloat("40H")
parseFloat("H40");
Try it Yourself »
parseFloat(" 40 ");
parseFloat("40 years");
parseFloat("40H")
parseFloat("H40");