1--- 2layout: docs 3page_title: lower - Functions - Configuration Language 4description: >- 5 The lower function converts all cased letters in the given string to 6 lowercase. 7--- 8 9# `lower` Function 10 11`lower` converts all cased letters in the given string to lowercase. 12 13## Examples 14 15```shell-session 16> lower("HELLO") 17hello 18> lower("АЛЛО!") 19алло! 20``` 21 22This function uses Unicode's definition of letters and of upper- and lowercase. 23 24## Related Functions 25 26- [`upper`](/docs/job-specification/hcl2/functions/string/upper) converts letters in a string to _uppercase_. 27- [`title`](/docs/job-specification/hcl2/functions/string/title) converts the first letter of each word in a string to uppercase. 28