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# Random Numbers in JavaScript Math.random() at the Mozilla Developer Network

why random to six,why not to seven and Up?

or is it because he multiplied by 6?

If you want a number higher than 6 the yes you can just replace 6 with a different number. For example

```Math.floor((Math.random() * 10) + 1);
```

this would produce a number between 1 & 10

Hi wilton,

Math.random() returns a floating point number from 0 up to but not including 1. For example:

```> Math.random()
0.2625259844878184
> Math.random()
0.06513541210374607
> Math.random()
0.5629554153276711
```

So that is great if you want a decimal number between 0 and 1, but normally you will want a larger number. To do this you can multiply Math.random() by a number. If we wanted numbers between 0 & up to but not including 100:

```> Math.random() * 100
26.25259844878184
> Math.random() * 100
6.513541210374607
> Math.random() * 100
56.29554153276711
```

Often you will want a whole number, for that we can use Math.floor() which will strip off the numbers after the decimal:

```> Math.floor( Math.random() * 100 )
26
> Math.floor( Math.random() * 100 )
6
> Math.floor( Math.random() * 100 )
56
```

Math.floor( Math.random() * 100 ) will return the numbers 0,1,2,3,4,5 ...... 97,98,99.

If you wanted numbers between 1 & 100 then you would need to + 1. So it becomes

```Math.floor( Math.random() * 100 ) + 1
```

In the video Dave just used 6 as an example, but you can use what ever number you wanted.