Date list cleaner and counter
Sort dates, remove duplicates and inspect gaps in a pasted list. Export the cleaned dates.
Preparing your tool…
How it works
Validate each ISO date, deduplicate, sort and calculate gaps between adjacent dates.
Example
2027-01-03, 2027-01-01, 2027-01-03 becomes two sorted dates.
What should I check before using the result?
Up to 366 entries; all dates must use YYYY-MM-DD.