Calculate Days Between Two Dates
Count exact days between contract signing and deadline, between a birth date and today, between two events, or add a number of days to find a future date.
Use cases
- Project deadlines — how many days until launch?
- Contract terms — 30/60/90-day payment periods
- Age calculation — exact days since birth
- Subscription tracking — when does my trial end?
- Legal and financial dating — notice periods, interest accrual
Leap years and edge cases
Irreva's date calculator handles leap years (Feb 29), month-end edge cases (Jan 31 + 1 month = Feb 28/29), and dates spanning DST transitions correctly.
Frequently Asked Questions
Can I calculate business days (excluding weekends)?
Yes — the date calculator has an option to count business days only.
Does it handle dates before 1970?
Yes — historical dates are fully supported.