A 30-year-old has lived 120 quarters. A newborn hits their first quarter at 3 months. This age in quarters calculator measures life – or whatever timespan – in 3-month increments.
Age in quarters calculator
How to use
Enter your birthdate or any reference date. The calculator shows total quarters lived, plus equivalent years, months, and days. A milestone tracker shows your next round-number quarter (multiples of 20 = 5 years).
Quarter milestones
- 40 quarters: 10 years old
- 80 quarters: 20 years - legal adulthood
- 120 quarters: 30 years
- 160 quarters: 40 years, roughly a career
- 200 quarters: 50 years - half-century mark
- 260 quarters: 65 years - traditional retirement
