Age Calculator
- or —
- or —
- or —
- or —
- or —
- or —
Calendar math is handled in UTC (leap years & month lengths are correct; local DST won’t skew totals).
Introduction
Age is a measure of time that everyone uses, whether for school, work, travel, or personal milestones. This online Age Calculator provides you with a quick and accurate way to know your age in different formats, from years and months to even minutes and seconds.
How age is calculated in most cultures
In the most common age system (used in western countries), your age increases on your birthday. For example, if you are 29 years and 11 months old, your official age is still 29 until your next birthday, when you become 30.
Cultural differences in age calculation
Not all societies use the same method. In some Asian traditions, a newborn is considered 1 year old at birth. Age then increases with the New Year rather than on the birthday. This means that a baby born just one day before Lunar New Year could already be counted as 2 years old only days later.
Handling tricky dates
Calculating age in months and days can sometimes be confusing, especially for months with different lengths. For example, from Feb 28, 2023 to Mar 31, 2023:
- If we count Feb 28 → Mar 28 as one month, the result is 1 month and 3 days.
- If we consider both Feb 28 and Mar 31 as “month-end,” then the result is 1 month.
Both are technically correct, but to stay consistent, this calculator uses the first method (day-to-day difference).
Why use this Age Calculator?
- ✅ Instant and accurate results
- ✅ Shows age in years, months, weeks, days, hours, minutes, and seconds
- ✅ Works with any valid date of birth
- ✅ Useful for school, job applications, forms, or just curiosity
Frequently Asked Questions (FAQ)
1. How is age calculated?
In most countries, age increases on your birthday. If you are 20 years and 11 months old, your age is still 20 until your next birthday.
2. Why does this calculator show age in months, weeks, and days?
This gives you a more detailed view of your age. For example, you may be 25 years, 3 months, and 12 days old instead of just “25.”
3. Can age be calculated differently?
Yes. In some Asian cultures, people are considered 1 year old at birth and age increases with the Lunar New Year rather than their birthday.
4. Is this calculator accurate?
Yes. The calculator uses exact date differences to ensure precise results across years, months, days, and even seconds.