Table Date Format Normalizer
Read stated date formats, convert them to one format, and ask you to resolve ambiguous values such as 03/04.
A table or a list of dates. Only cells that look like dates are changed; other cells stay as they are.
Your result
Paste a table with dates, then choose how they are written now.
How to use it
- Paste or upload the table.
- Choose how the dates are written and the format you want.
- Check the highlighted cells and download the CSV.
Examples
- Day/month/year05/03/2026 2026-03-05
- Arabic digits١٢/٠٣/٢٠٢٦ 2026-03-12
- A date that does not exist31/02/2026 Left as it is and listed
Tool details and privacy
Rewrite dates written in mixed ways in a table into one format. You tell it the current day and month order, so nothing is guessed.
03/04 can mean 3 April or 4 March; a declared order prevents mistakes.
Options
- Output: 2026-03-05, 05/03/2026 or 03/05/2026.
- A value starting with a four-digit year is read as year/month/day.
Limits
- The year needs four digits.
- Month names such as "March" are not read.
Privacy
What you type or open stays in your browser. Nothing is uploaded or saved on the server.
Questions
Are non-date cells changed?
No.
What happens to an impossible date?
It stays, highlighted and listed.
Are Arabic digits accepted?
Yes.
Is the table uploaded?
No.