| --- |
| page_title: textdecodebase64 - Functions - Configuration Language |
| description: >- |
| The textdecodebase64 function decodes a string that was previously |
| Base64-encoded, |
| |
| and then interprets the result as characters in a specified character |
| encoding. |
| --- |
| |
| # `textdecodebase64` Function |
| |
| -> **Note:** This function is supported only in Terraform v0.14 and later. |
| |
| `textdecodebase64` function decodes a string that was previously Base64-encoded, |
| and then interprets the result as characters in a specified character encoding. |
| |
| Terraform uses the "standard" Base64 alphabet as defined in |
| [RFC 4648 section 4](https://tools.ietf.org/html/rfc4648#section-4). |
| |
| The `encoding_name` argument must contain one of the encoding names or aliases |
| recorded in |
| [the IANA character encoding registry](https://www.iana.org/assignments/character-sets/character-sets.xhtml). |
| Terraform supports only a subset of the registered encodings, and the encoding |
| support may vary between Terraform versions. |
| |
| Terraform accepts the encoding name `UTF-8`, which will produce the same result |
| as [`base64decode`](/language/functions/base64decode). |
| |
| ## Examples |
| |
| ``` |
| > textdecodebase64("SABlAGwAbABvACAAVwBvAHIAbABkAA==", "UTF-16LE") |
| Hello World |
| ``` |
| |
| ## Related Functions |
| |
| * [`textencodebase64`](/language/functions/textencodebase64) performs the opposite operation, |
| applying target encoding and then Base64 to a string. |
| * [`base64decode`](/language/functions/base64decode) is effectively a shorthand for |
| `textdecodebase64` where the character encoding is fixed as `UTF-8`. |
