Pick the two dates
In any order: the result is the same.
Days between two dates
Pick two dates and see the time between them as years, months and days, as a total number of days, weeks and hours, and as business days.
- Free
- No sign-up
- Runs in your browser
100% private — the calculation is done in your browser and nothing is sent to any server.
Next step
Keep going with your result in another tool. Nothing is uploaded.
How it works
Decide about the last day
Count it if you need an inclusive range, such as a hotel stay or a leave period.
Read the result
Years, months and days, total days, weeks, hours and business days.
How long is it between two dates?
The question comes up all the time: how many days until an event, how long a contract lasted, how long since something happened, how many days of leave are covered by a period, how far apart two milestones on a project are. Counting on a calendar is slow and full of traps, such as months of different lengths and leap years. This calculator gives the answer in several forms at once.
Years, months and days
The first result is a calendar difference, the way a person would say it: for example "1 year, 2 months, 3 days". It is worked out by counting whole years, then whole months, then the remaining days, taking into account the real length of each month, so it does not depend on averages. Because months are unequal, the number of months and days can differ from what you get by dividing the total days by 30.
Total days, weeks and hours
The total number of days is exact and unaffected by daylight saving changes, because dates are treated as pure calendar days. From it come the weeks, with the remainder in days, and the hours and minutes, which are simply days multiplied by 24 and 1,440. Use them for a quick sense of scale, such as "18,000 hours".
Inclusive or not?
By default the end date is not counted: from the 1st to the 2nd is one day. If you need both the first and last day, as for a hotel booking where the nights count, a period of annual leave or a course that runs from one date to another, tick the inclusive option, and the 1st to the 2nd becomes two days.
Business days
The last result counts the weekdays, Monday to Friday, between the dates. It does not subtract public holidays, which vary by country and region. If you need to exclude specific holidays, use the business days calculator, where you can list them and choose which days are the weekend.
What it does not do
It works with calendar dates, not times of day or time zones. It uses the Gregorian calendar for all dates, including those before its adoption. To add or subtract time from a date instead, use the add days to a date tool.
Frequently asked questions
How do I calculate the number of days between two dates?
Pick the two dates. The total number of days appears at once, together with the same period in years, months and days.
Is the last day counted?
Not by default. Tick "Count the end date as well" to include it, which adds one day.
Why don't months and days match the total days divided by 30?
Because months have different lengths. The calculator counts real calendar months, not an average.
Does it handle leap years?
Yes. Dates are treated as real calendar days, so February 29 is counted in leap years.
Can I count only working days?
The result includes a count of Monday-to-Friday days. To exclude holidays, use the business days calculator.
Are my dates sent anywhere?
No. The calculation is done in your browser.
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