4. März 2021

# A formula for converting pace from min/mile to min/km in Google Spreadsheets

If you are a runner and desperate for a quick-and-dirty formula you can use in a Google Spreadsheet to convert running pace from minutes per mile into minutes per kilometer, this nerdy post will give the formula to you.

If one of the cells in your sheet reads 7:40 min/mi, use the following formula to produce 4:45 min/km.

=CONCATENATE(FLOOR(((REGEXEXTRACT(A1, "(.*):")*60+REGEXEXTRACT(A1, ":(.*)"))/1.60934)/60), ":", TEXT(FLOOR(MOD((REGEXEXTRACT(A1, "(.*):")*60+REGEXEXTRACT(A1, ":(.*)"))/1.60934, 60)), "00"))

This is a rather lousily tested formula, and when you see a regular expression in a piece of code and no tests, your alarm bells should be ringing. It’s a biased formula, only rounding down. There might be a much smarter, easier way of accomplishing this. You have been warned. Your mileage may vary. Use it at your own risk. I use the formula to guide my training this year. The original pace chart only provided measurements in minutes per mile, but now I can translate these to units that are more easily accessible to me: