Calculate your exact age or time interval between two dates. Get precise age in years, months, weeks, days, hours, minutes, and seconds instantly.
Modify the values and click the Calculate button to use
An Age Calculator is a simple yet powerful tool that helps you determine the exact age or time interval between two dates. Whether you want to know your precise age in years, months, and days, or calculate the duration between two historical events, this calculator provides instant and accurate results.
Beyond just calculating years, our age calculator breaks down the time difference into multiple units including months, weeks, days, hours, minutes, and even seconds. This makes it perfect for various scenarios - from calculating ages for official documents to planning events or tracking milestones.
The calculator is especially useful for students, parents tracking child development milestones, HR professionals managing employee records, medical professionals calculating patient ages, and anyone who needs precise date calculations for legal, educational, or personal purposes.
Select the month, day, and year of the birth date or starting date you want to calculate from.
Select the date you want to calculate the age at. This defaults to today's date but can be any future or past date.
Press the Calculate button to instantly see the age or time interval in multiple formats - years, months, weeks, days, hours, minutes, and seconds.
Get precise age calculations in seconds with support for leap years and varying month lengths.
View your age in years, months, weeks, days, hours, minutes, and seconds simultaneously.
Simple dropdown interface for selecting dates - no typing required, just select and calculate.
Fully responsive design works perfectly on smartphones, tablets, and desktop computers.
Completely free to use with no sign-up, registration, or personal information required.
Perfect for students learning about date calculations, time intervals, and calendar mathematics.
Calculate exact age for school admissions, job applications, government IDs, and legal documents.
Plan milestone birthdays, anniversaries, and count down to special occasions with precise date calculations.
Doctors and healthcare providers use age calculators for pediatric development tracking and geriatric assessments.
Calculate employee age for benefits eligibility, retirement planning, and service duration tracking.
Teachers and students use it for age-appropriate grade placement and developmental milestone studies.
Calculate time intervals between historical events or determine ages of historical figures.
Insurance companies and financial advisors use age calculations for policy eligibility and premium calculations.
Calculate exact age in days for astrological predictions, birth chart analysis, and zodiac compatibility.
Our age calculator is 100% accurate. It accounts for leap years, varying month lengths (28-31 days), and calculates down to the exact second. The calculations are based on the Gregorian calendar system used worldwide.
Yes! You can set the "Age at the Date of" field to any future date to calculate how old someone will be on that specific date. This is useful for planning milestone birthdays or checking age eligibility for future events.
Different situations require different units. Medical professionals often need age in months for infants, legal documents may require exact days, event planners count down in weeks, and some scientific calculations need precision in hours or seconds.
The calculator automatically accounts for leap years (years divisible by 4, except century years unless divisible by 400). This ensures accurate day counts for people born on or around February 29.
People born on February 29 (leap day) technically have a birthday every 4 years. The calculator accurately handles this by calculating exact days, and for non-leap years, their age increases on February 28 or March 1 depending on convention.
Absolutely! Just enter the start event date as "Date of Birth" and the end event date as "Age at the Date of". The calculator works for any two dates, not just for calculating human ages.
No! All calculations happen in your browser (client-side). We do not store, track, or transmit any personal information or dates you enter. Your privacy is completely protected.
Age determines grade eligibility, exam eligibility (like JEE, NEET, CUET), scholarship applications, and age-specific educational programs. Accurate age calculation ensures students meet admission criteria and apply to appropriate opportunities.
Enter your date of birth and set the target date to the job application deadline or joining date. Many government jobs and entrance exams have strict age limits that require precise calculation.
Yes! Teachers can use this calculator for math lessons about time, calendars, and arithmetic. It's perfect for teaching concepts like leap years, date differences, and time unit conversions in an interactive way.
Age calculation involves finding the time difference between two dates. The calculator subtracts the birth date from the target date and breaks it down into years, months, and days. The process accounts for:
Years = Target Year - Birth Year (adjusted for months and days)
Months = Target Month - Birth Month (adjusted for days)
Days = Target Day - Birth Day (adjusted for month lengths)
Total Days = (Target Date - Birth Date) / milliseconds per day
Total Hours = Total Days × 24
Total Minutes = Total Hours × 60
Total Seconds = Total Minutes × 60
Birth Date: January 15, 2000
Target Date: October 28, 2025
Result:
Always verify the month, day, and year before calculating, especially for official documents or legal purposes.
Take a screenshot of the results if you need them for applications or records.
Use future dates to plan when someone will reach a milestone age for college admissions or retirement.
Calculate ages of historical figures at the time of major events to understand historical context better.
Compare ages of siblings, family members, or historical figures by running multiple calculations.
Teachers can create worksheets asking students to verify age calculations for math practice.