How to Use ASC() in Google Sheets

Description

Converts full-width ASCII and katakana characters to their half-width counterparts. All standard-width characters will remain unchanged..

How To Actually Use ASC() in Sheets

ASC(text)

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Try ASC yourself

In the range A1:A10, enter full-width ASCII or katakana characters. Use the ASC formula in B1 to convert these characters to their half-width counterparts and drag the formula down to B10.

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Official Docs

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