What this tool does
Enter two dates and this calculator shows how far apart they are — as years, months and days, and also as total days, weeks and hours. Use today's date as the end to calculate an age or how long until an event.
Common uses
- Calculating age from a birth date.
- Counting days until a deadline, launch or holiday.
- Working out a subscription or contract length.
How the breakdown works
The years/months/days figure counts full calendar periods between the dates, so it matches how people naturally describe durations (for example “2 years, 3 months and 5 days”).