I have a value like `1724.1000000000001`

,How can I round up values like such to `1724.11`

in javascript? I need a generic function.Please help...

From http://www.javascriptkit.com/javatutors/round.shtml:

```
var original=28.453
1) //round "original" to two decimals
var result=Math.round(original*100)/100 //returns 28.45
2) // round "original" to 1 decimal
var result=Math.round(original*10)/10 //returns 28.5
3) //round 8.111111 to 3 decimals
var result=Math.round(8.111111*1000)/1000 //returns 8.111
```

Since the example in the questions asks for a result of `1724.11`

instead of `1724.1`

I would assume you don't strictly want `round`

, but rather `ceil`

:

```
var n = 1724.10000000001;
Math.ceil(n * 100) / 100; // >> 1724.11
```

If a simple round up to the second decimal is required us `Math.round`

instead of `Math.ceil`

.

To round a number to 2 decimals:

```
var num = 1724.1000000000001;
num = Math.ceil(num*100)/100;
// num == 1724.11
```

Or, try this:

```
var num = 1724.1000000000001;
function round(num, decimals){
var d = Math.pow(10,decimals)
return Math.ceil(num*d)/d;
}
console.log(round(num,0))
console.log(round(num,1))
console.log(round(num,2))
console.log(round(num,3))
console.log(round(num,4))
// 1725
// 1724.2
// 1724.11
// 1724.101
// 1724.1001
```

you can try `toFixed`

to fix to 2 decimals, below is the code.

```
var num=1724.1999;
alert(num.toFixed(2));
```

result `1724.20`

An easy way to do this is:

```
var num = 1724.1000000000001;
num = Math.ceil(num * 100) / 100;
alert(num); // 1724.11
```

**How it works:**

Ceil will round the value up. But you want to have 2 decimal numbers. The best way to do this is to:

- Multiply the value with 100,
- Round it up,
- Divide it with 100.

Now you have an up rounded value with 2 decimals. This is what happens:

```
1724.1000000000001 * 100 = 172410.00000000001
round-up on 172410.00000000001 = 172411
172411 / 100 = 1724.11
```

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