Date Difference Calculator
Days, weeks, months and years between any two dates.
What does Date Difference Calculator do?
Find the exact gap between two dates, expressed as a calendar breakdown of years, months and days as well as totals in days, weeks, hours and minutes. There is an option to count only working days.
How to Use Date Difference Calculator
- 1Pick the start dateAny date, past or future.
- 2Pick the end dateThe calculator handles the order either way round.
- 3Choose your optionsInclude the end date, or count business days only.
Key Features
- Calendar breakdown in years, months and days
- Totals in days, weeks, hours, minutes and seconds
- Optional business-day count that skips weekends
- Option to include the end date, which matters for notice periods
- Leap years handled correctly, including 29 February endpoints
Frequently Asked Questions
Should I include the end date?
It depends what you are counting. A hotel stay from the 3rd to the 6th is three nights but four days. Contracts and notice periods usually count both endpoints. The toggle lets you match whichever convention applies.
How are months counted?
As full calendar months. From 31 January to 28 February is counted as zero months and 28 days, because a full month has not elapsed. This is why the day total and the month total do not always line up neatly.
Does the calculator handle leap years?
Yes, including the 100 and 400 year rules — 1900 was not a leap year, 2000 was. Day counts spanning 29 February are exact.
What counts as a business day?
Monday to Friday. Public holidays vary by country and are not applied automatically, so use the business days calculator if you need to exclude specific dates.
Explore Related Workflows & Utilities
More tools in Calculators and related problem-solving tools
Direct Workflow Extensions
Find your exact age in years, months, days, hours and minutes.
Count working days between dates, excluding weekends and holidays.
How many days between dates, or since and until a date.
Add or subtract days, weeks, months or years from a date.
Count weeks between dates, with the leftover days shown.
Count down to a date, or run a timer with an alert.
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