| --- |
| page_title: lower - Functions - Configuration Language |
| description: >- |
| The lower function converts all cased letters in the given string to |
| lowercase. |
| --- |
| |
| # `lower` Function |
| |
| `lower` converts all cased letters in the given string to lowercase. |
| |
| ## Examples |
| |
| ``` |
| > lower("HELLO") |
| hello |
| > lower("АЛЛО!") |
| алло! |
| ``` |
| |
| This function uses Unicode's definition of letters and of upper- and lowercase. |
| |
| ## Related Functions |
| |
| * [`upper`](/terraform/language/functions/upper) converts letters in a string to _uppercase_. |
| * [`title`](/terraform/language/functions/title) converts the first letter of each word in a string to uppercase. |
