There are 5.118 inches in 13 centimeters (cm).

Here's the conversion:

- Conversion factor: 1 inch = 2.54 centimeters (cm)
- To convert 13 centimeters to inches, we divide the number of centimeters by the conversion factor:

```
13 centimeters / 2.54 centimeters/inch = 5.118 inches (rounded to four decimal places)
```

We can round the answer to two decimal places for practical use:

5.12 inches