Calculate Your Relationship Time
Our relationship calculator helps you track exactly how long you've been together with your partner. Whether you're wondering “how long have we been dating?” or want to calculate your next anniversary, this free tool gives you instant results showing your days together, upcoming milestones, and special dates to celebrate.
Couples use relationship time calculators for TikTok posts, anniversary Instagram captions, long-distance countdowns, and planning surprise dates. Enter any meaningful start date — first kiss, exclusive talk, moving in, or wedding day — and get a clear breakdown in years, months, days, and total days together.
How to Use This Relationship Calculator
- Enter the date you started dating or got married.
- Click “Calculate Our Time Together” to see your results.
- View your total days together and upcoming milestones.
- Share your results or save the date for your next celebration.
Why Track How Long You've Been Together?
Celebrate Milestones
Never miss important relationship anniversaries like 100 days, 6 months, or your yearly anniversary.
Share Your Love
Share how long you've been together on social media and celebrate your relationship publicly.
Remember Special Moments
Keep track of relationship length and look forward to upcoming special dates together.
Plan Anniversaries
Use our anniversary calculator to plan ahead and make each celebration memorable.
Relationship Milestones to Celebrate
Our time together calculator automatically shows you upcoming milestones. Here are popular relationship anniversaries couples love to celebrate:
100 Days Together
Your first major milestone
6 Month Anniversary
Half a year of love
1 Year Anniversary
One year together
1000 Days
A thousand days of memories
5 Year Anniversary
Five years strong
10 Year Anniversary
A decade together
How Long Have We Been Dating vs. How Long Married
This relationship length calculator works for any type of relationship milestone. Use your first date for “how long have we been dating” calculations, or use your wedding date to track your marriage anniversary. The calculator adapts to whatever start date matters most to you and your partner.
Many couples calculate both — dating length and marriage length — at different times of the year. Some celebrate monthly anniversaries early on, then shift to yearly milestones after the first year. However you count, the important part is marking the time you've chosen to build something together.
More Free Couple Tools from Lumo
Counting days is just the start. Explore our other free tools for couples:
- Couple Compatibility Test — see how aligned your values are
- Couples Quiz — fun question game for date night
- Red Flag Green Flag Quiz — compare boundaries with your partner
- Red Flag Couple Challenge — answer separately, reveal together
Frequently Asked Questions
- What date should I use to calculate our relationship?
- Use whatever date is most meaningful to you! Most couples use their first official date, the day they became exclusive, or their wedding date. There's no wrong answer — choose the date that feels right for your relationship.
- Can I share my relationship calculator results?
- Yes! Click the "Share" button to share how long you've been together on social media or copy the text to send to friends and family. It's a fun way to celebrate your relationship milestones.
- How accurate is this anniversary calculator?
- Our calculator counts the exact number of days between your start date and today. It updates automatically every day, so your count is always current.
- Does this work for long distance relationships?
- Absolutely! This time together calculator works for all relationships — long distance, local, married, dating, or engaged. Distance doesn't change how long you've been together.
- Can I use my wedding date instead of our first date?
- Yes. Many couples track marriage length with their wedding date and dating length with their first date. Pick whichever milestone you want to celebrate right now.