Calculators
Age Calculator
Calculate your exact age in years, months, days, hours, and minutes. Find out how old you are, how many days until your next birthday, or the age difference between two people.
Use Age Calculator to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.
Your results will appear here.
About this tool
Calculate your exact age instantly with our comprehensive age calculator. Enter your birth date to find out precisely how old you are in years, months, days, hours, and even minutes. Our calculator also shows how many days remain until your next birthday and can calculate the age difference between two people.
Age calculation is more than just years - our calculator provides detailed breakdowns useful for various purposes. Use it to determine eligibility for age-restricted services, calculate exact age for official documents, plan milestone birthday celebrations, or simply satisfy your curiosity about how many days you've been alive.
The calculator handles leap years correctly, accounts for different month lengths, and can calculate ages across any date range. Whether you need your exact age for a legal document, want to know someone else's age from their birth date, or are planning an event based on someone's age, our calculator provides accurate results instantly.
All calculations are performed in your browser with complete privacy - no birth dates are stored or transmitted. The calculator works on any device and can be bookmarked for quick access whenever you need it.
Usage examples
Calculate Your Current Age
Birth date: January 15, 1990 (calculated on Feb 2, 2026)
Age: 36 years, 0 months, 18 days. Next birthday in 347 days. You have lived approximately 13,166 days or 316,000 hours.
Days Until Milestone Birthday
Birth date: March 10, 1994, calculating to 30th birthday
30th birthday: March 10, 2024. If today is Feb 2, 2026, your 30th birthday was 694 days ago. Your next milestone (35th) is in 1,133 days.
Age Difference Between Two People
Person A: June 5, 1985 vs Person B: August 20, 1990
Age difference: 5 years, 2 months, 15 days. Person A is 1,902 days older than Person B.
Employment Duration Calculation
Hired: September 1, 2018, calculating on Feb 2, 2026
Employment: 7 years, 5 months, 1 day. Total of 2,711 days or approximately 387 weeks employed.
Age on Specific Date
Birth: April 12, 2000, Age on: December 31, 2025
On December 31, 2025, you will be 25 years, 8 months, 19 days old. That's 9,394 days since birth.
How to use
- Enter your birth date by clicking the calendar icon or typing the date
- Select whether to calculate age as of today or a custom date
- If choosing custom date, select or enter the target date
- Click "Run Tool" to calculate your exact age instantly
- View your age in years, months, days, and total days lived
- See days until your next birthday and other useful metrics
Benefits
- Instant age calculation in years, months, days, hours, and minutes
- Shows days until your next birthday
- Calculate age difference between two people
- Find age on any specific date (past or future)
- Handles leap years and different month lengths correctly
- No registration or personal data collection required
- Complete privacy - all calculations in your browser
- Works on desktop, tablet, and mobile devices
- Bookmark and use offline anytime
- Free forever with no limitations
FAQs
How do you calculate age accurately?
Age is calculated by subtracting the birth date from the current date (or specified date), accounting for years, months, and days. The calculator handles leap years (like 2024) and months with different numbers of days (28-31). For example, if you were born on February 29 (leap day), your birthday is celebrated on February 28 in non-leap years.
How does the calculator handle leap years?
Leap years occur every 4 years (2024, 2028, etc.) with exceptions: century years must be divisible by 400 (2000 was a leap year, but 1900 wasn't). Our calculator automatically accounts for leap years when calculating your exact age. If you were born on February 29th (leap day), you still age one year every year. In non-leap years, your birthday is typically celebrated on February 28th or March 1st, though legally your age increases on February 28th in most jurisdictions. The calculator correctly adds the extra day when counting total days lived through leap years.
Why is my age in months and days important?
Knowing your exact age in months and days is important for infant development milestones, medication dosing, eligibility requirements, official documents, and insurance calculations. Many services and benefits have age requirements specified down to months or even days, not just years.
How many days old am I?
Simply enter your birth date and the calculator will show your age in total days. For example, someone born on January 1, 2000 would be approximately 9,528 days old as of February 2, 2026. This counts includes leap year adjustments.
Can I calculate someone else's age from their birth date?
Yes! Enter any birth date to calculate that person's current age. This is useful for planning age-appropriate gifts, determining eligibility for programs, or simply finding out how old someone is when you know their birth date.
How do I calculate age difference between two people?
Enter both birth dates in the calculator. The difference in their ages will be shown in years, months, and days. This is useful for understanding relationship age gaps, sibling age differences, or generational comparisons.
Does the calculator work for future dates?
Yes! You can calculate how old you'll be on any future date. This is perfect for planning milestone birthdays (like turning 30, 40, 50) or calculating when you'll reach specific age milestones like retirement age or senior discounts eligibility.
What if I was born on February 29 (leap day)?
If you were born on February 29, you still age one year every year. Most leap day babies celebrate their birthday on February 28 in non-leap years, though legally your age increases on March 1 in some jurisdictions. Our calculator handles leap day births correctly.
Is this calculator accurate for legal age verification?
Yes, our calculator uses precise date arithmetic and accounts for all calendar irregularities. However, always verify specific age requirements with the relevant authority, as legal age calculations may have jurisdiction-specific rules (like counting from the day after birth in some countries).
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