# REPLACEB

text · from excel · excel: not yet compared · sheets: not yet compared

replaces characters by byte position

## signature

```
REPLACEB(old_text, start_num, num_bytes, new_text)
```

returns: `text`

## arguments

- old_text: text: required
- start_num: number: required
- num_bytes: number: required
- new_text: text: required

## examples

formula and result, asserted in the engine test suite.

| formula | result | with |
| --- | --- | --- |
| `=REPLACEB("text", 3, 4, "text")` | `tetext` | none |

## related

- [ASC](https://deepcalc.com/docs/functions/asc.md): converts full-width characters to half-width
- [BAHTTEXT](https://deepcalc.com/docs/functions/bahttext.md): spells a number as thai baht and satang
- [CHAR](https://deepcalc.com/docs/functions/char.md): returns the character for a character-set code
- [CLEAN](https://deepcalc.com/docs/functions/clean.md): removes non-printable characters
- [CODE](https://deepcalc.com/docs/functions/code.md): numeric code of the first character
- [CONCAT](https://deepcalc.com/docs/functions/concat.md): joins multiple text strings into one
- [CONCATENATE](https://deepcalc.com/docs/functions/concatenate.md): joins several text strings into one
- [CONTAINS](https://deepcalc.com/docs/functions/contains.md): checks if text contains substring

## navigate

- [all text functions](https://deepcalc.com/docs/functions/text-functions.md)
- [function index](https://deepcalc.com/docs/functions.md): all 602 functions
- [error values](https://deepcalc.com/docs/errors.md) · [concepts](https://deepcalc.com/docs/concepts.md) · [limits](https://deepcalc.com/docs/limits.md)
- [everything in one file](https://deepcalc.com/llms-full.txt)

source: https://deepcalc.com/docs/functions/replaceb