Find how many days sit between two calendar dates, plus the same span in weeks and hours. Handy for project timelines, notice periods, travel, and “how long until” questions.
Date difference
How many days between two dates? Pick a start and end date to get days, weeks, and hours. Useful for project timelines, notice periods, and countdown planning.
14 days (end is later)
2 weeks · 336 hours
Counts calendar days, not business days, and ignores time of day and time zones. A Monday-to-Friday span is 4 days, not 5 working days.
How to use Date difference
- Pick a start date.
- Pick an end date.
- Read the signed day count, weeks, and hours.
Example: From 1 January to 15 January is 14 days — two weeks, or 336 hours.
Frequently asked questions
- Does this count business days only?
- No. It counts calendar days and ignores weekends and holidays. Monday to Friday is 4 days, not 5 working days.
- Are time zones included?
- No. Both dates are treated as local calendar dates at midnight, so a flight across the date line is not modeled.
- What if the end date is earlier than the start?
- You still get the number of days, marked as earlier rather than later. Absolute weeks and hours use the same span.