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Week Numbers

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

Key points
  • Choose WEEKNUM
  • Choose the week start
  • Copy it

In WEEKDAY Builder you can build a formula for the week of the year.

Steps

  1. Choose WEEKNUM
  2. Choose the week start
  3. Copy it
ISO gives the international standard week number.
Use "Build a WEEKDAY Formula" (free)

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