How to convert a string representation of a floating-point number to number type in JavaScript?

Published November 12, 2020

To convert a string representation of a floating-point number to a number type, you can use the parseFloat() function in JavaScript.

Consider this string of floating-point number,

// string with floating point number
const str = "45.67";

Let's use the parseFloat() function and pass the string to the function as an argument to convert it to a number type like this,

// string with floating point number
const str = "45.67";

// convert to number type
const floatNum = parseFloat(str);

console.log(floatNum); // 45.67
  • This function is useful when you want to convert values that are obtained from url, form, or whichever places where the values will be string type and need to be converted to a floating-point number.

See this example live in JSBin.

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