Calculate Your Exact Age in Seconds
Find your exact age in years, months, days, hours, minutes, and seconds. Free age calculator with birthday countdown and fun age facts.
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Enter Your Birth Date
Why Choose Filator's Age Calculator?
Precise to the Second
Calculate exact age down to seconds with leap year accuracy. No approximations—just precise date arithmetic accounting for every day, including February 29.
100% Private & Secure
Your birthdate never leaves your browser. All calculations happen locally using JavaScript—no server uploads, complete privacy, unlike server-based calculators.
Fun Age Facts
Discover interesting facts about your age including what day you were born, total heartbeats lived, birthday countdown, and age milestones.
How to Calculate Your Exact Age Online
Filator's free age calculator lets you calculate your exact age in years, months, days, hours, minutes, and seconds instantly in your browser—no signup required. Unlike Calculator.net (ads, approximations), CalculatorSoup (rounded calculations), and GigaCalculator (no hours/minutes), Filator provides precise calculations down to the second with complete privacy.
Why Calculate Your Exact Age?
📋 Legal Documents
Many legal documents, visa applications, and official processes require your exact age in years, months, and days for age verification and eligibility determination.
🏥 Medical Purposes
Healthcare providers need precise age calculations for medication dosages, pediatric care, geriatric assessments, and age-specific medical treatments.
🎓 Educational Enrollment
Schools and programs have specific age cutoffs measured in years and months for grade placement, kindergarten admission, and program eligibility.
💼 Retirement Planning
Calculate exactly how long until retirement age, Social Security eligibility, pension vesting, or other age-based financial milestones.
How to Calculate Age Step-by-Step
- 1.Enter your date of birth (day, month, year) in the calculator above
- 2.Your exact age appears instantly in years, months, days, hours, minutes, and seconds
- 3.See your birthday countdown showing days, hours, and minutes until your next birthday
- 4.Discover fun age facts including the day of week you were born and total life statistics
- 5.Optionally calculate your age at any specific date (past or future) for planning purposes
Filator vs Competitors Comparison
| Feature | Filator | Calculator.net | CalculatorSoup | GigaCalculator |
|---|---|---|---|---|
| Precision | To the second | Full precision | Approximations | Days only |
| Privacy | Client-side | Unspecified | Unspecified | Unspecified |
| Advertisements | None | Google Ads | Some ads | Some ads |
| Birthday Countdown | Live countdown | Days only | Yes | No |
| Works Offline | Yes (PWA) | No | No | No |
Advanced Features
- • Leap Year Accurate: Correctly handles February 29 birthdays and all leap years since 1900 for 100% accurate age calculations
- • Age at Specific Date: Calculate your age at any past or future date, not just today—perfect for planning and historical calculations
- • Birthday Countdown: Live countdown showing days, hours, minutes, and seconds until your next birthday
- • Day of Week Born: Discover what day of the week you were born on (Monday, Tuesday, etc.)
- • Age Difference Calculator: Compare ages between two people to see exact age difference in years, months, and days
- • Life Statistics: See fun facts like total heartbeats lived, hours slept, and other age-based statistics
- • Multiple Formats: View age in years/months/days, total days lived, total hours, minutes, and seconds
- • Complete Privacy: All calculations happen in your browser—no server uploads or data storage
Common Use Cases
Legal & Official Documents
Visa applications, passport renewals, legal contracts, insurance forms, and any official documents requiring exact age verification
Medical & Healthcare
Pediatric dosage calculations, geriatric assessments, age-specific treatments, and medical record age verification
Birthday Planning
Track milestone birthdays, plan surprise parties with exact countdown timers, discover fun age facts for celebrations
Retirement & Financial Planning
Calculate exact time until retirement age, Social Security eligibility, pension vesting, and financial milestone planning
Understanding Age Calculation
Age calculation involves several complexities beyond simple subtraction. Our calculator handles all the intricate details to ensure accuracy:
Leap Year Accounting
Leap years occur every 4 years, except for century years not divisible by 400. Our calculator correctly handles all leap years (like 2000, 2004, 2008) and non-leap century years (like 1900, 2100) for precise age calculations.
Variable Month Lengths
Months have different lengths (28-31 days), which affects age calculations. We use exact date arithmetic rather than approximations (unlike CalculatorSoup's 30.4167-day average) for 100% accurate results.
February 29 Birthdays
If you were born on a leap day, our calculator handles this special case correctly. It shows when your actual birthday occurs (every 4 years) and accounts for non-leap years in age calculations.
Frequently Asked Questions
How do I calculate my exact age online?
Enter your date of birth in the age calculator and it will instantly show your exact age in years, months, days, hours, minutes, and seconds. You can also see your age at any specific date, days until your next birthday, and fun facts about your age—all calculated in your browser with no signup required.
Is this age calculator accurate?
Yes, our age calculator is extremely accurate. It accounts for leap years, exact month lengths (28-31 days), and calculates down to the second. Unlike basic calculators that use approximations, Filator uses precise date arithmetic for 100% accurate results.
Can I calculate age between two dates?
Yes! You can calculate your age at any specific date, not just today. This is useful for determining your age at important past or future events, retirement planning, or calculating how old someone would be on a certain date.
What if I was born on February 29 (leap day)?
Our calculator handles leap day birthdays correctly. If you were born on February 29, it accurately calculates your age and shows when your actual birthday occurs (every 4 years), plus which date you celebrate in non-leap years.
Does this calculator work for historical dates?
Yes, our calculator works for any date from 1900 to 2100. You can calculate ages for historical figures, determine how old someone would be today, or calculate future ages for planning purposes.
Is my date of birth data saved or stored?
No personal data is ever saved on our servers. All age calculations happen entirely in your browser using JavaScript, ensuring complete privacy. Your birthdate never leaves your device, unlike server-based calculators.
Can I calculate age difference between two people?
Yes, our age calculator includes an age difference feature. Enter two birthdates to see the exact age difference in years, months, and days, perfect for comparing siblings, couples, or any two people.
What's the difference between chronological age and biological age?
Chronological age (what we calculate) is your actual age based on your birth date. Biological age refers to how old your body seems based on biomarkers like fitness, health metrics, and lifestyle—it can be higher or lower than your chronological age.
Ready to Calculate Your Age?
Start calculating your exact age instantly with precise results down to the second, no signup, and complete privacy. Fast, accurate, and completely free—with none of the ads or limitations you'll find on Calculator.net, CalculatorSoup, or GigaCalculator. Try Filator now and discover fun facts about your age!