Dates Sorter

Paste a list of dates — one per line — and sort them in ascending or descending order instantly. Supports ISO, US, European, and natural language formats.

Sort Any Date List in Seconds

Whether you have a spreadsheet export, a log file, or a list you typed manually, this tool puts your dates in the right order without spreadsheet software. It handles mixed formats, flags unrecognised lines, and lets you choose your output format before copying.

Multi-format · Instant sort

Common Use Cases

Organise Log Files

Server logs and event histories often have dates in the wrong order. Sort them here to analyse events in chronological sequence.

Prepare Spreadsheet Data

Copy a column of dates from a spreadsheet, sort them here, and paste them back in the right order.

Standardise Date Formats

If your list mixes formats, sort here and use the ISO or US output format to get a uniform, consistent list.

Find Earliest or Latest Dates

Sort descending to find the most recent date in a list, or ascending to find the oldest one.

How this Dates Sorter works

Paste one date per line into the input field. The tool parses each line and tries to recognise the date using common formats — ISO 8601 (YYYY-MM-DD), US format (MM/DD/YYYY), European format (DD/MM/YYYY or DD.MM.YYYY), and natural language like "January 5, 2024", "5 Jan 2024", or "5 de enero de 2024". Ambiguous slash dates such as "01/02/2024" are flagged as invalid instead of being guessed incorrectly. Lines that cannot be parsed are excluded from the sort. Choose ascending order (earliest first) or descending order (latest first), then click Sort. The sorted dates appear on the right, formatted to match the output format you select. Click Copy All to grab the result, or Download to save it as a plain text file. Everything runs locally in your browser.

How to use this Dates Sorter

1

Paste your dates

Enter one date per line in the input field. The tool accepts ISO, US, European, and natural language formats.

2

Choose order and format

Select ascending (earliest first) or descending (latest first), and pick an output date format.

3

Sort and copy

Click Sort Dates. The sorted list appears on the right. Copy all results or download as a text file.

Frequently Asked Questions

Which date formats does this tool recognise?
The tool parses ISO 8601 (YYYY-MM-DD), slash-separated US or European dates when they are unambiguous, European format with dots (DD.MM.YYYY), and natural language dates like "January 5, 2024", "5 Jan 2024", or "5 de enero de 2024".
What happens to dates it cannot parse?
Any line that cannot be recognised as a valid date is marked as invalid. Invalid entries are excluded from the sorted output. The tool shows a count of invalid lines so you can check them before sorting.
Can I sort dates with timestamps?
Yes. Dates that include a time component (like "2024-01-15 14:30:00" or "January 15, 2024 2:30 PM") are parsed including the time, so they sort in exact chronological order.
Does the tool change how the dates are written in the output?
That depends on the Output Format you select. Choose "Keep Original" to preserve each date exactly as you wrote it. Choose any other format (ISO, US, EU, Natural) to standardise all dates into one consistent format.
Is there a limit on how many dates I can sort?
There is no hard limit. The tool processes thousands of dates without any issue since everything runs locally in your browser. Performance depends on your device but is fast for typical use cases.
What does ascending order mean for dates?
Ascending order means earliest date first, latest date last. Descending order is the reverse — latest date first, earliest date last.
Does this tool upload my data anywhere?
No. All processing happens locally in your browser. Nothing is sent to any server. Your date list stays entirely on your device.
How does the tool handle ambiguous dates like 01/02/2024?
Ambiguous slash-separated dates are marked as invalid instead of being guessed. If both DD/MM/YYYY and MM/DD/YYYY are plausible, the tool excludes that line from the sorted output so it does not silently sort it under the wrong calendar date. Dot-separated dates are always treated as European (DD.MM.YYYY).
Can I download the sorted output?
Yes. Click the Download button to save the sorted list as a plain text file (.txt) with one date per line.
What is the ISO 8601 date format?
ISO 8601 is the international standard date format: YYYY-MM-DD (e.g., 2024-07-04). It is the most unambiguous format and recommended when sharing dates across systems or countries.

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