Date Calculator
Find the exact number of days, weeks, and months between two dates.
| Period | Days | Weeks |
|---|---|---|
| 1 week | 7 | 1.0 |
| 1 month (30-day month) | 30 | 4.3 |
| 1 quarter (3 months) | 91 | 13.0 |
| 6 months | 182 | 26.0 |
| 1 year | 365 | 52.1 |
| 1 leap year | 366 | 52.3 |
| 5 years (avg., incl. leap days) | 1,826 | 260.9 |
| 10 years (avg., incl. leap days) | 3,653 | 521.9 |
Frequently asked questions
How is the years/months/days breakdown calculated?
We calculate a calendar-accurate breakdown, accounting for varying month lengths — so, for example, the gap between January 1 and March 1 correctly shows as 2 months, not a fixed 60 days.
Does this handle leap years correctly?
Yes — since the calculation is based on real calendar dates rather than a fixed average, leap years are automatically accounted for.
Can I calculate a date in the past?
Yes — enter any two dates in either order; the calculator automatically figures out which is earlier and shows the correct duration between them.
What's the difference between total days and weeks shown?
Total days is the exact day count between the two dates. Weeks shows that same duration divided into whole weeks, useful for things like pregnancy tracking or project timelines.
How many days are in 3 months or 6 months?
A calendar quarter (3 months) is typically 91 days, and 6 months is typically 182 days — but the exact count depends on which months are included, since months range from 28 to 31 days. Enter your own two dates above for an exact count.
How do I calculate the number of days until a future date, like a deadline or wedding?
Enter today's date as the start date and the future date as the end date, and the calculator will return the exact number of days, weeks, and the calendar-accurate months and days between them.
Does this calculator treat every month as 30 days?
No — it uses the actual calendar dates you enter, so a month can count as 28, 29, 30, or 31 days depending on which month it is. The 30-day figure in the table above is only a common approximation for quick estimates.
About this tool
This calculator finds the exact duration between two dates, shown as total days, a calendar-accurate years/months/days breakdown, and total weeks. Useful for tracking deadlines, ages, anniversaries, or any date-based planning.