How to Format Numbers to Have Only Two Decimal Places

Format number to always show 2 decimal places

(Math.round(num * 100) / 100).toFixed(2);

Live Demo

var num1 = "1";document.getElementById('num1').innerHTML = (Math.round(num1 * 100) / 100).toFixed(2);
var num2 = "1.341";document.getElementById('num2').innerHTML = (Math.round(num2 * 100) / 100).toFixed(2);
var num3 = "1.345";document.getElementById('num3').innerHTML = (Math.round(num3 * 100) / 100).toFixed(2);

span {    border: 1px solid #000;    margin: 5px;    padding: 5px;}

<span id="num1"></span><span id="num2"></span><span id="num3"></span>

Formatting a number with exactly two decimals in JavaScript

To format a number using fixed-point notation, you can simply use the toFixed method:

(10.8).toFixed(2); // "10.80"

var num = 2.4;
alert(num.toFixed(2)); // "2.40"

Note that toFixed() returns a string.

IMPORTANT: Note that toFixed does not round 90% of the time, it will return the rounded value, but for many cases, it doesn't work.

For instance:

2.005.toFixed(2) === "2.00"

UPDATE:

Nowadays, you can use the Intl.NumberFormat constructor. It's part of the ECMAScript Internationalization API Specification (ECMA402). It has pretty good browser support, including even IE11, and it is fully supported in Node.js.

const formatter = new Intl.NumberFormat('en-US', {
   minimumFractionDigits: 2,      
   maximumFractionDigits: 2,
});

console.log(formatter.format(2.005)); // "2.01"
console.log(formatter.format(1.345)); // "1.35"

How to print a float with 2 decimal places in Java?

You can use the printf method, like so:

System.out.printf("%.2f", val);

In short, the %.2f syntax tells Java to return your variable (val) with 2 decimal places (.2) in decimal representation of a floating-point number (f) from the start of the format specifier (%).

There are other conversion characters you can use besides f:

• d: decimal integer
• o: octal integer
• e: floating-point in scientific notation

Show a number to two decimal places

You can use number_format():

return number_format((float)$number, 2, '.', '');

Example:

$foo = "105";
echo number_format((float)$foo, 2, '.', '');  // Outputs -> 105.00

This function returns a string.

How do I display a decimal value to 2 decimal places?

decimalVar.ToString("#.##"); // returns ".5" when decimalVar == 0.5m

or

decimalVar.ToString("0.##"); // returns "0.5"  when decimalVar == 0.5m

or

decimalVar.ToString("0.00"); // returns "0.50"  when decimalVar == 0.5m

Format number to 2 decimal places

You want to use the TRUNCATE command.

https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html#function_truncate

How to display two digits after decimal point in SQL Server

select cast(your_float_column as decimal(10,2))
from your_table

decimal(10,2) means you can have a decimal number with a maximal total precision of 10 digits. 2 of them after the decimal point and 8 before.

The biggest possible number would be 99999999.99

How do I format a number to 2 decimal places, but only if there are already decimals?

Working example: http://jsfiddle.net/peeter/JxPZH/

$(document).ready(function() {    $('#itemQuantitySelect_3').change(function() {                var itemPrice = 1.50;        var itemQuantity = $(this).val();        var quantityPrice = (itemPrice * itemQuantity);        if(Math.round(quantityPrice) !== quantityPrice) {            quantityPrice = quantityPrice.toFixed(2);        }                $(this).next("span").html("$" + quantityPrice);
    });});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><form action="/" method="post">    <select id='itemQuantitySelect_3' name="itemQuantity_3">        <option value='1'>1 Item</option>        <option value='2'>2 Items</option>        <option value='3'>3 Items</option>    </select>    <span>$1.50</span></form>

Using String Format to show decimal up to 2 places or simple integer

An inelegant way would be:

var my = DoFormat(123.0);

With DoFormat being something like:

public static string DoFormat( double myNumber )
{
    var s = string.Format("{0:0.00}", myNumber);

    if ( s.EndsWith("00") )
    {
        return ((int)myNumber).ToString();
    }
    else
    {
        return s;
    }
}

Not elegant but working for me in similar situations in some projects.

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