Date Difference Calculator
Find the exact difference between two dates in days, weeks, months, and years.
Calculate the Difference Between Dates
Select a start date and an end date to calculate the time between them.
What Is a Date Difference Calculator?
A date difference calculator determines how much time exists between two calendar dates.
It can be useful for calculating the number of days until an event, checking deadlines, planning trips, tracking projects, or finding the length of a period.
Enter two dates above and the calculator will show the difference in days, weeks, approximate months, and approximate years.
How Does the Date Difference Calculator Work?
The calculator converts both dates into calendar values and determines the number of complete days between them.
The calculation uses the actual calendar dates, including leap years, so dates across February and leap years are handled correctly.
For weeks, the total number of days is divided by 7. The remaining days are shown separately.
Date Difference Examples
January 1 to January 31
There are 30 days between January 1 and January 31.
January 1 to February 1
In a non-leap year, there are 31 days between January 1 and February 1.
One Week
A period of 7 days is equal to exactly 1 week.
When Can You Use a Date Difference Calculator?
- Calculate the number of days until a deadline.
- Find the length of a vacation or trip.
- Calculate the duration of a project.
- Count the days between important events.
- Estimate how many weeks or months are between dates.
- Plan appointments, events, and personal schedules.
How to Use the Date Difference Calculator
- Select your start date.
- Select your end date.
- Click "Calculate Difference."
- Review the total number of days.
- Check the weeks, remaining days, approximate months, and approximate years.
Frequently Asked Questions
How many days are between two dates?
Enter the two dates into the calculator above. It will calculate the exact number of days between them.
Does the calculator account for leap years?
Yes. The calculator uses calendar dates and correctly accounts for leap years when calculating the difference.
How many days are in a week?
There are 7 days in one week.
Does the calculation include the start date?
The calculator measures the elapsed time between the two dates. It does not count the start date as an additional full day.
Can I calculate dates in the past?
Yes. You can select dates from the past or future. The calculator compares the two selected dates.
Is this date calculator free?
Yes. The EverydaySolved Date Difference Calculator is free to use.