Exclude Digit Filter
Enter the digits to exclude (for example 4, or 4,7) and choose where to look: anywhere in the number, or one specific position counted from the right. Then decide whether the matching numbers should be removed or kept.
Digits to Exclude:   Look At:   Position from Right:
Action:   Separator:   
Recognition Options:
Calculation Result Download CSV
Count Original Matched Digits

Introduction to the tool and how to use it

Digit Exclude Filter pulls out the numbers that do (or do not) contain certain digits — for example removing every code that contains a 4, or keeping only the ones whose last digit is 8.

Steps:
1. Paste your numbers; commas, spaces, line breaks or any other separator work;
2. Enter the digits to exclude — several are allowed (e.g. 4,7). Only 0-9 is recognised and anything else is ignored;
3. Choose where to look: "any position" matches a number that contains any of these digits, while "one position" only inspects the digit at the given position counted from the right (1 = units);
4. Choose the action: remove the matching numbers, or keep only those that match;
5. Click Run. The text box lists the result using your separator, the table below shows index, number and matched digits (copyable in place), and CSV export is available.
Note: signs and the decimal point are ignored when matching, and a position beyond the length of a number never matches.

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