Quick answer: calculate how long you have been together
Enter the date you consider the start of the relationship. The calculator returns calendar years, months and days, total elapsed days and the time until the next anniversary.
How long have we been together?
Enter the date your relationship began to calculate the time together in years, months and days, plus total days and the next anniversary.
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How relationship duration is calculated
Calendar years are counted first, then calendar months, then remaining days. This produces a human-readable duration aligned with anniversaries rather than dividing total days by a fixed number.
Which start date should you use?
There is no universal definition. Use the date you both consider the beginning of the relationship.
Milestones worth calculating
- Your next annual anniversary.
- 1,000, 2,000 or 5,000 elapsed days together.
- The date when you will have been together for 10 or 20 years.
Related ChronoBoxes tools
Turn a date into a future moment
ChronoBoxes Tools and the ChronoBox creator are separate. If a date matters enough to calculate, you can optionally create a private message, add photos or video and keep it locked until that date.
Create a free ChronoBox →