Remove Trailing Zeros from a Number in JavaScript

Remove Trailing Zeros from a Number #

To remove the trailing zeros from a number, pass the number to the parseFloat() function. The parseFloat function parses the provided value, returning a floating point number, which automatically removes any trailing zeros.

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const num1 = 13.453000;
const r1 = parseFloat(num1);
console.log(r1); // 👉️ 13.45

// 👇️ if you need to set specific # of decimals
// use the toFixed method
const num2 = 13.453000;
const r2 = parseFloat(num2.toFixed(3));
console.log(r2); // 👉️ 13.453

// 👇️ if the value is a string
const str = '13.453000';
const r3 = parseFloat(str);
console.log(r3); // 👉️ 13.453

In our first example, we called the parseFloat function to strip all unnecessary trailing zeros from a number.

The only parameter the function takes is a value that it parses to a floating point number.

In the second example, we used the toFixed method on the number to explicitly set the number to 3 decimal places.

The toFixed method also rounds the number if necessary and pads the fractional part with zeros if you've specified more decimal places than the number has.

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console.log((5).toFixed(2)); // 👉️ '5.00'
console.log((5.346).toFixed(2)); // 👉️ '5.35'

In our third example, we have a string, from which we want to remove the trailing zeros. Again, we used the parseFloat function to convert the string to a number.

Numbers in JavaScript automatically drop any unnecessary trailing zeros, because 3.00 is equal to 3.

Further Reading #

• How to Pad a number with Leading Zeros in JavaScript
• Round a Number to 2 Decimal Places in JavaScript