Pick two dates and instantly see the gap in days, weeks, months, and years.
How many days until your launch, exam, or event?
Calculate the length of a lease, subscription, or employment period.
Days since a birthday, anniversary, or important life event.
The calculator finds the exact number of calendar days between your two dates, then converts that day count into approximate weeks, months, and years. Weeks are exact (days ÷ 7), but months and years are shown as approximations, since month lengths range from 28 to 31 days and years range from 365 to 366 days — there's no single fixed conversion factor the way there is for weeks.
Months vary between 28 and 31 days and years vary between 365 and 366 days, so converting a day count into months or years requires an average-length approximation rather than a single fixed number.
The day count reflects the number of days between the two calendar dates, not an inclusive count of both endpoints. Some use cases, like counting rental days, may need to add one day depending on convention.
Yes. If the end date is earlier than the start date, the result is shown as a negative difference — useful for counting days since a past event rather than days until a future one.