Relationship Duration Calculator

Find out exactly how long you and your partner have been together — in years, months, days, hours, and minutes.

You have been together for:

year, month, day

week and day

hour, minute, and second

How to Use

  1. Enter your name and your partner’s name in the input fields.
  2. Select your relationship start date using the date picker.
  3. Click the "Calculate Duration" button to see how long you’ve been together, formatted in several time units.

About This Tool

This Relationship Duration Calculator helps you celebrate milestones and reflect on the time you’ve shared together. It provides an accurate calculation down to the seconds, working instantly on your device and correctly accounting for leap years and varying month lengths.

Use it to remember anniversaries, plan celebrations, or simply reflect on the journey you’ve taken as a couple. The countdown considers your local time zone and runs completely offline in your browser.

Frequently Asked Questions

Our Other Fun Tools

Flames Calculator

Try the classic FLAMES game online! Discover your relationship destiny: Friends, Lovers, Affection, Marriage, Enemies, or Siblings – all for fun!

Try Now →

Zodiac Love Compatibility Calculator

Discover your love match using astrology and zodiac signs.

Try Now →

Chinese Zodiac Love Match Calculator

Explore compatibility based on the Chinese zodiac signs.

Try Now →

Birth Date Love Match Calculator

Calculate your love match based on birth dates for a fun insight.

Try Now →

Numerology Love Calculator

Discover love insights based on numerology and your names.

Try Now →

Love Percentage Test

Get a fun random love percentage to surprise you and your partner.

Try Now →

Valentine’s Day Countdown Timer

Count down the days to Valentine’s Day and get ready to celebrate love.

Try Now →

Relationship Duration Calculator

Calculate how long you and your partner have been together.

Try Now →

Future Love Prediction Tool

Get a fun AI-based playful prediction about your love future.

Try Now →