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Date Extractor

Find dates in any format and normalise them to one.

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As written Normalised Note

Quick Tool Overview

The Date Extractor finds dates in every format a document might use and normalises them to one. The day-first or month-first ambiguity is resolved by a setting rather than a guess, and genuinely ambiguous dates are flagged rather than silently resolved.

What it does
Extracts dates and normalises their format
You give it
A document, export, log or record set
You get back
Every date in one consistent format
Best for
Cleaning inconsistent date data
Text Tools Free, unlimited use No sign-up Runs in your browser

About the Date Extractor

Dates are the most inconsistently written data there is. 03/09/2026 means the third of September in Britain and the ninth of March in America. The same document can contain "3 Sept 2026", "September 3rd", "2026-09-03" and "Sep 3, 26", all meaning the same day.

This finds every date in a text, whatever format it was written in, and normalises them to one consistent form. The day-first or month-first ambiguity is resolved by a setting rather than a guess, because guessing is how date bugs happen — and any date that is genuinely ambiguous is flagged rather than silently resolved. Results can be output as ISO 8601, which is the only format that sorts correctly as text.

Key features of the Date Extractor

Ambiguity flagged, not guessed

03/09 could be either reading, so the tool marks it rather than quietly picking one.

Every common format

Numeric with any separator, written months, ordinals, ISO 8601 and two-digit years.

ISO 8601 output

The only format that is unambiguous everywhere and sorts correctly as plain text.

Times kept with dates

A time attached to a date is preserved; a standalone time is reported separately.

Original alongside

What was written and what it became, so the normalisation can be checked.

How to use the Date Extractor

  1. 1

    Paste your text

    A document, an export, a log or a set of records.

  2. 2

    Set the ambiguity rule

    Day-first or month-first, which decides how 03/09 is read.

  3. 3

    Choose the output format

    ISO 8601, a written form, or your own pattern.

  4. 4

    Check the flagged dates

    Any date that could be read two ways is marked rather than silently resolved.

Frequently asked questions

By the setting you choose, and it flags the result as ambiguous. Day-first reads it as 3 September; month-first as 9 March. There is no way to tell from the text alone, which is why the tool asks rather than guesses.

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