# 066. Do case-insensitive string comparisons by converting to lower case
topic: {ref}`character-variables`
```{note}
This tip is a draft[^draft].
[^draft]: From the perspective of FortranTip Browser, "draft" means that
it hasn't been edited for formatting,
hasn't had corresponding Fortran programs added,
the text content hasn't been enhanced, etc.
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```
Character variables are case-sensitive, and to compare two strings ignoring case you can first convert them to lower case.
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