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Coloring Duplicates

Published: Oct 19, 2026 | Updated: Oct 19, 2026 | About (Japanese)

Key points
  • Choose DUPLICATE
  • Enter the last row
  • Copy it

In Conditional Format Builder, COUNTIF lets you color duplicated values.

Steps

  1. Choose DUPLICATE
  2. Enter the last row
  3. Copy it
Enter a last row a little beyond your data.
Use "Build a Conditional Formatting Formula" (free)

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