Calculator
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Give a start date and a number of days and the tool returns the resulting calendar date, rolling across months and years correctly. Use a negative number of days to move backward from the start date.
Every day is counted, weekends and holidays included. For a deadline that should land on a working day, use the business-days tool, which steps over weekends.
That is the promise behind every tool here. Files are read in your browser tab, processed there, and discarded when you close it — never uploaded to our servers.
Years, months, and days between birth date and today.
Days and weeks between two dates.
Weekdays between dates with optional India 2026 holidays.
Hours, minutes, seconds between two dates.
Format a moment in another IANA timezone.
