## Purpose

## Return value

## Syntax

`=SIGN(number)`

*number*- The number to get the sign of.

## How to use

The SIGN function returns the sign of a number as +1, -1 or 0. If *number* is positive, SIGN returns 1. If *number* is negative, sign returns -1. If *number* is zero, SIGN returns 0.

The SIGN function takes one argument, *number*, which must be a numeric value. If *number* is not numeric, SIGN returns a #VALUE! error.

### Examples

```
=SIGN(5) // returns 1
=SIGN(-3) // returns -1
=SIGN(0) // returns 0
```

SIGN can be used to change negative numbers into positive values like this. For example, with -3 in cell A1, the formula below returns 3:

```
=A1*SIGN(A1)
=-3*-1
=3
```

The formula above has no effect on positive numbers, since SIGN will return 1. However, the ABS function provides a simpler solution:

```
=ABS(A1) // absolute value of A1
```

### Notes

- If
*number*is in the range (-∞,0) SIGN(number) will return -1. - If
*number*is equal to 0 SIGN(number) will return 0. - If
*number*is in the range (0,∞)(number) SIGN will return 1.