---
page_title: replace function reference
description: |-
  The `replace` function replaces all occurrences of substring with a given string. 
---

⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️
> [!IMPORTANT]  
> **Documentation Update:** Product documentation previously located in `/website` has moved to the [`hashicorp/web-unified-docs`](https://github.com/hashicorp/web-unified-docs) repository, where all product documentation is now centralized. Please make contributions directly to `web-unified-docs`, since changes to `/website` in this repository will not appear on developer.hashicorp.com.
⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️

# `replace` Function

`replace` searches a given string for another given substring, and replaces
each occurrence with a given replacement string.

```hcl
replace(string, substring, replacement)
```

## Examples

```shell-session
> replace("1 + 2 + 3", "+", "-")
1 - 2 - 3

> replace("hello world", "world", "everybody")
hello everybody
```

## Related Functions

- [`regex_replace`](/packer/docs/templates/hcl_templates/functions/string/regex_replace) searches a given string for another given substring,
  and replaces each occurrence with a given replacement string.