Extract digits from string - Google spreadsheet

Question

In Google spreadsheets, I need a formula to extract all digits (0 to 9) contained into an arbitrary string, that might contain any possible character and put them into a single cell.

Examples (Input -> Output)

d32Ελληνικάfe9j.r/3-fF66 -> 329366
h01j2j3jFxF$$4j5j6j7j8j9 -> 0123456789

Solution 1

You may replace all non-digit characters using the \D+ regex and an empty string replacement with

=REGEXREPLACE(A11,"\D+", "")

or with casting it to a number:

=VALUE(REGEXREPLACE(A11,"\D+", ""))

Solution 2

These work with integers, decimals and negatives:

=REGEXEXTRACT(A2,"-*\d*\.?\d+")
=VALUE(REGEXEXTRACT(A2,"-*\d*\.?\d+"))

Solution 3

If some of source cells may contain only numbers it is safer to convert the value to text first, then regexreplace. Otherwise it produces error.

Result as text

=REGEXREPLACE(TO_TEXT(C1),"\D+", "")

Result as number

=VALUE(REGEXREPLACE(TO_TEXT(C1),"\D+", ""))

The same for whole column

=ARRAYFORMULA(IF(LEN(C1:C), VALUE(REGEXREPLACE(TO_TEXT(C1:C),"\D+", ""))))

Solution 4

If you wanted to extract with decimal points, you could use regexextract:

=VALUE(REGEXEXTRACT(B4,"[0-9]*\.[0-9]+[0-9]+"))

Example to extract digits, a decimal and 2 significant digits:

=VALUE(REGEXEXTRACT(A1,"[0-9]*\.[0-9]+[0-9]+"))

Output:

Solution 5

array formula variant:

=ARRAYFORMULA(IF(A1:A<>""; REGEXREPLACE(A1:A; "\D+"; )*1; ))

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