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AI Builder often outputs dates as text, and Power Automate + Excel then “guess” the format.
If a date can be interpreted as US (e.g., 03/07/2024), Excel flips it.
If it cannot be US (e.g., 21/02/2024), it stays correct.
To fix this, you must normalise the date inside Power Automate before writing to Excel.
1. Convert the AI‑extracted date to ISO format as this removes all ambiguity.
formatDateTime(aiDate, 'yyyy-MM-dd')
2. Convert the ISO date into UK format (dd/MM/yyyy)
This guarantees Excel receives a UK‑formatted date every time.
formatDateTime(formatDateTime(aiDate, 'yyyy-MM-dd'), 'dd/MM/yyyy')
3. Use this final value in your Excel “Add a row” action
Excel will now always store the date correctly in UK format.
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Robu1 👩💻