Anniversary Calculator
Find out exactly how long you've been together, or calculate when your next anniversary is. Perfect for relationships, weddings, work milestones, and more.
Part of our Date & Time Calculators collection.
Anniversary Calculator
Free online calculator
Your wedding date, first date, or work start date
Results update automatically as you type
How to Use This Calculator
- 1
Enter your anniversary start date (wedding day, first date, etc.).
- 2
Select the anniversary type.
- 3
See exactly how long you've been together in years, months, and days.
- 4
Get the date of your next annual anniversary and gift theme suggestions.
How Anniversary Dates Are Calculated
Days Together = Today − Start Date Next Anniversary = Start Date + (Years Elapsed + 1) full years Also shows traditional anniversary gift themes for each milestone year.
Example Calculation
Example: Married on June 15, 2018
Inputs
anniversaryDate: 2018-06-15anniversaryType: relationship
Result
6 years, 10 months, 2 days together
A couple married June 15, 2018 has been together 6 years, 10 months, 2 days as of April 17, 2025. Their 7th anniversary is June 15, 2025.
Frequently Asked Questions
What are traditional anniversary gifts by year?
Year 1: Paper, Year 5: Wood, Year 10: Tin, Year 15: Crystal, Year 20: China, Year 25: Silver, Year 30: Pearl, Year 40: Ruby, Year 50: Gold.
Can I use this for work anniversaries?
Yes — select 'Work Anniversary' and enter your hire date to see tenure and next anniversary.