Often, I just want to know the closest drill size. Doesn't matter to me if it is fractional, number, letter, or metric. This search occurs often enough that I sat down and found a way that works best for me. Maybe it will help you too.
If you are interested, please see
https://rick.sparber.org/FastAccessD...bleArticle.pdf
Your comments are welcome. All of us are smarter than any one of us.
Thanks,
Rick