Date Difference Calculator
Find the number of days, months, and years between two dates.
Pick a start and end date to see exactly how much time separates them — useful for countdowns, deadlines, project timelines, or figuring out how long ago something happened.
Frequently asked questions
Does the calculator count the difference in days, or years and months too?
Both — it breaks the difference down into years, months, and days, plus a total day count.
Can I calculate the difference between a past date and a future date?
Yes. Either date can be in the past or future — the calculator works out the difference either way.
Is today's date included in the count?
The difference is calculated as full elapsed days between the two dates, so it reflects the actual time span between them.