Free date difference calculator to find the exact number of days, weeks, months and years between two dates. Perfect for how many days until an event, how many days since a date, business day counts, or date duration calculations — instant and private.
Did this date difference calculator help you?
Choose any two dates — past, present or future — using the date pickers above.
Instantly see the exact years, months and days between the two dates, plus total days, weeks and hours.
See weekdays vs. weekend days, and the day of the week for both your start and end dates.
Everything you need to measure time between two dates, all in one free tool.
All calculations run instantly in your browser. Your dates are never sent to any server or stored anywhere.
Get the precise calendar difference between two dates, not just a rough day count, accounting for varying month lengths and leap years.
See the complete duration between two dates broken down into total days, weeks and hours for planning and reporting.
Instantly see how many weekdays and weekend days fall between your two chosen dates — useful for work and business day counts.
See exactly which day of the week your start date and end date fall on, no extra calendar lookup needed.
No account, no watermark, no daily limit. Use the date difference calculator as many times as you want, completely free.
This days between dates calculator instantly finds the exact date difference in years, months, weeks and days between two dates. Whether you're searching for "days between two dates," "how many days until," "how many days since," "date duration calculator," or "business days calculator," this tool gives you a precise, accurate answer in seconds.
Enter a start date and an end date, and the tool calculates the calendar-accurate difference using proper year, month and day math — not simple subtraction. It correctly accounts for leap years and different month lengths, so the years, months and days shown are always accurate, along with total days, weeks and hours.
Besides the total day count, this tool works as a business days calculator by separating weekdays from weekend days, which is especially useful when calculating billable working days, delivery windows, payroll periods or business SLAs between two calendar dates.
All tools work instantly on your device, private by design.
Enter a start date and end date, then press Calculate Date Difference. The tool instantly shows the exact years, months, days, and total days, weeks and hours between them.
Yes. Set today's date as the start date and your target date as the end date to see exactly how many days, weeks or months remain until that event.
Yes. Set the past date as the start date and today as the end date to see the total days, weeks and months that have passed since then.
By default the calculator counts both the start and end date as part of the range. Turning on "Exclude end date" counts only full days between the two dates, which some contracts and billing periods require.
Yes. Along with the total day count, results show how many of those days fall on weekdays (Monday-Friday) versus weekends (Saturday-Sunday).
No. This calculator is private by design. All calculations happen instantly in your browser and no dates or personal information are ever sent to or stored on any server.
Yes. The calculation logic correctly accounts for leap years and the varying number of days in each month, so the year, month and day breakdown is always precise.