Date tools
Duration conversions
- years to months
- months to years
- months to days
- days to months
- weeks to days
- days to weeks
- days to hours
- hours to days
- hours to minutes
- minutes to hours
- minutes to seconds
- seconds to minutes
- years to days
- days to years
- years to weeks
- weeks to years
- months to weeks
- weeks to months
- seconds to milliseconds
- milliseconds to seconds
- hours to seconds
- seconds to hours
- decades to years
- years to decades
- centuries to years
- years to centuries
- days to minutes
- minutes to days
- weeks to hours
- hours to weeks
- years to hours
- hours to years
- months to hours
- hours to months
- days to seconds
- seconds to days
Between dates
Pick two dates to get the span as years, months and days, plus totals in weeks, days, hours, minutes and seconds, and how many of those days are weekdays (Monday to Friday).
Months are counted on the calendar: from 31 January to 28 February is 28 days, not "one month", because February has no 31st. Tick Include the end date when you want both the first and last day counted, as with hotel nights versus days of a trip.
Unix time
Unix time counts seconds since 1 January 1970 00:00:00 UTC. Paste a timestamp in seconds, milliseconds, microseconds or nanoseconds: the converter guesses the unit from the number of digits (10 for seconds, 13 for milliseconds) and shows the date in UTC, your local time and ISO 8601. Or pick a local date and time to get its timestamp.
Questions and answers
How do I count the days between two dates?
Enter a start and end date. ConvertEasy counts calendar days between them; the end date is excluded unless you tick "Include the end date".
Does it count weekdays only?
The Weekdays figure counts Monday to Friday. It does not know public holidays, which vary by country.
Are leap years handled?
Yes. Dates follow the Gregorian calendar, so 29 February is counted in leap years.
What is a Unix timestamp?
The number of seconds since the Unix epoch, 1970-01-01T00:00:00Z, ignoring leap seconds. JavaScript and many APIs use milliseconds instead.
Does the time zone converter handle daylight saving?
Yes. Offsets are calculated for the exact date and time you enter, using the IANA time zone database built into your browser.