Age Calculator - Calculate Your Exact Age
Enter a date of birth to find age on any date in years, months and days, with every total from weeks to seconds and the number of days until your next birthday.
- ✓ Leap years built in
- ✓ Private
- ✓ Free
Enter your date of birth to see your age
Your age in years, months and days, with total weeks, days and hours and your next birthday, will appear here.
The age calculator measures the difference between two dates, your date of birth and any date you choose, and returns your exact age in years, months and days. It counts real calendar months and every leap day, then repeats the same span as total months, weeks, days, hours, minutes and seconds, with your next birthday and a few facts about your birth date.
You get your exact age to the day, ready for forms, school records and insurance quotes, and nothing you type leaves your device. Use it for job applications, life insurance, school admissions, retirement planning or family history. Enter a date of birth, pick the date to measure to and press Calculate age.
How to Use the Age Calculator
To use the age calculator, enter a date of birth, choose the date to measure to and press Calculate age. The whole process takes 4 steps.
- Date of birth11/15/2006Enter the date of birth.
Type it or pick it from the date picker. Any date from January 1, 1900 works.
- Age at date today03/10/2026Set the “Age at date”.
The field shows today's date. Change it to find age on any date in the past or future, such as an exam closing date.
- Calculate age →Press Calculate age.
The result panel opens under the calculator with your age in years, months and days and 16 more values.
- ⧉ Copy result↗ ShareCopy or share the result.
Copy result puts a one-line summary on your clipboard. Share sends it to WhatsApp or any app on your phone.
Your browser remembers the last date of birth you entered, so every AgeCountLab calculator opens with it filled in. Clearing the site data in your browser removes it.
What Does the Age Calculator Show?
The age calculator shows 19 results for every pair of dates, in 3 groups: your exact age in years, months and days, the same span in 9 other units, and 7 facts about your date of birth. The table uses a person born on 15 November 2006, measured on 10 March 2026.
| Result | How it is worked out | Example |
|---|---|---|
| Age | Complete years, then months since the last birthday, then remaining days | 19 years, 3 months, 23 days |
| Total months | Completed years × 12, plus the months since the last birthday | 231 |
| Total weeks | Total days ÷ 7, with the remaining days | 1,007 weeks, 6 days |
| Total days | Every calendar day between the two dates, leap days included | 7,055 |
| Total hours | Total days × 24 | 169,320 |
| Total minutes | Total days × 1,440 | 10,159,200 |
| Total seconds | Total days × 86,400 (live when the target is today) | 609,552,000 |
| Decimal years | Total days ÷ 365.2425, the average Gregorian year | 19.32 |
| Age at nearest birthday | Rounds up once you pass the half-year mark | 19 |
| Next birthday | Number of days until the next birthday | 250 days |
| Half birthday | Next date 6 months after a birthday | 15 May 2026 |
| Born on a | Weekday of the date of birth | Wednesday |
| Zodiac sign | Western sun sign of the birth date | Scorpio |
| Chinese zodiac | Animal of the birth year | Dog |
| Generation | Generation band of the birth year | Generation Z |
| Birthstone | Traditional stone of the birth month | Topaz |
| Korean age | Current year − birth year + 1 | 21 |
Months and days come from actual calendar months. A calculator that divides total days by the average month length of 30.42 days (365 ÷ 12) gives a different months-and-days figure around February and the 31-day months. Hours, minutes and seconds assume a birth time of midnight; with today as the target date, the seconds counter keeps running.
How to Calculate Age from Date of Birth
To calculate age from a date of birth by hand, write the later date above the date of birth and subtract one column at a time: days, then months, then years. Borrow when the top number is smaller. Someone born on 15 November 2006 was 19 years, 3 months and 23 days old on 10 March 2026.
15 November 2006 to 10 March 2026
15 is bigger than 10, so borrow a month.
10 + 28 = 38, and 38 − 15 = 23 days.
2 + 12 = 14, and 14 − 11 = 3 months.
2025 − 2006 = 19 years.
A borrowed month adds the days of the month before the later date: 28 or 29 for February, 30 for April, June, September and November, and 31 for the rest. Press Play below to watch the borrowing with your own dates.
Watch the subtraction step by step
Watch your two dates become an exact age. Press play, or step through the subtraction and the two borrowing rules one at a time.
Enter a birth date above, then press Play.
Common Uses of an Age Calculator
An age calculator has 7 common uses, including job applications, life insurance quotes and retirement planning. Each one needs an exact age on a specific date, not just the current year minus the birth year.
Job and exam applications
Recruiters set an age threshold on a fixed date, such as 18 to 30 years on the closing date. Put that date in “Age at date” to check, or use the Govt Job Age Calculator for limits and relaxation.
Life insurance quotes
Life insurance companies set the premium by age, and many use your age at your nearest birthday. Once you pass the half-year mark, that age rounds up to your next birthday. The result panel shows it as Age at nearest birthday.
School admissions
Schools admit children by their age on a cut-off date before term starts. Enter the cut-off date to see the child's exact age in years, months and days.
Baby and child milestones
Parents count a baby's age in weeks and months. The result lists both totals. For a baby born early, the Corrected Age Calculator counts from the due date.
Retirement planning
Pension and savings rules switch on at exact ages such as 55, 59½, 62 and 66. The table below lists the main ones; enter a future date to see your age on it.
Genealogical research
Old records give an age instead of a birth date. A person aged 34 on the 1940 US census date, April 1, 1940, was born between April 2, 1905 and April 1, 1906.
Event countdowns
Put today's date in the date-of-birth field and the event in “Age at date” to get the number of days until any event. The Birthday Countdown does this live for birthdays.
Ages that change the rules
| Age | What changes | Where |
|---|---|---|
| 18 | Age of majority in most US states and the federal voting age | United States (US) |
| 21 | Minimum legal drinking age | US |
| 55 | Rule of 55: penalty-free 401(k) withdrawals from the employer you leave in or after the year you turn 55 | US |
| 59½ | 401(k) and IRA withdrawals without the 10% early-withdrawal penalty | US |
| 60 | Senior-citizen age; retirement age for most government employees | India; Pakistan |
| 62 | Earliest age to claim reduced Social Security retirement benefits | US |
| 65 | Medicare eligibility | US |
| 66–67 | Social Security full retirement age, set by birth year (67 for anyone born in 1960 or later) | US |
To find the date you reach 59½, add 59 years and 6 months to your date of birth: a person born on 15 November 2006 turns 59½ on 15 May 2066. Rules change over time, so confirm them with the plan, employer or government office before acting.
Frequently Asked Questions
How Old Am I Today?
You are as old as the complete years, months and days between your date of birth and today's date. Enter your date of birth in the age calculator above. The “Age at date” field is set to today, so the result shows your current age in years, months and days, with the number of days you have been alive. Someone born on 15 November 2006 was 19 years, 3 months and 23 days old on 10 March 2026.
How Do I Calculate My Exact Age?
To calculate your exact age, subtract your date of birth from today's date one column at a time: days first, then months, then years. Borrow the days of the previous month when the day count is negative, and borrow 12 months when the month count is negative. The age calculator runs the same subtraction with real calendar months, so the answer is exact to the day.
How Do I Calculate Age from My Date of Birth?
To calculate age from your date of birth, subtract your birth year from the current year, then subtract 1 more if your birthday has not come yet this year. That gives your age in whole years. For months and days, enter the date of birth in the age calculator and press Calculate age. The tool accepts any date of birth from January 1, 1900.
How Many Days Have I Been Alive?
You have been alive for the number of calendar days between your date of birth and today, leap days included. A person born on 15 November 2006 had lived 7,055 days on 10 March 2026, or 1,007 weeks and 6 days. The age calculator shows this as Total days, and the Age in Days calculator lists your 10,000th day and other day milestones.
How Many Months Old Am I?
Your age in months equals your completed years times 12, plus the full months since your last birthday. Someone who is 19 years, 3 months and 23 days old is 231 months old (19 × 12 + 3). The age calculator shows this as Total months. Parents use the same figure for babies under 2 years (24 months) old.
How Old Will I Be on a Future Date?
To find your age on a future date, change the “Age at date” field to that date and press Calculate age. A person born on August 15, 1998 will be 31 years, 4 months and 17 days old on January 1, 2030. The same field works for past dates, such as an exam closing date or the date on an old record.
How Many Days Until My Next Birthday?
The number of days until your next birthday appears in the Next birthday box of every age calculation. On 10 March 2026, a person born on November 15 has 250 days to wait. For a live countdown in days, hours, minutes and seconds, use the Birthday Countdown.
Does the Age Calculator Account for Leap Years?
Yes, the age calculator accounts for leap years by counting every February 29 between the two dates. A leap year has 366 days and comes every 4 years, except century years that are not divisible by 400: 2000 was a leap year and 1900 was not. Between 15 November 2006 and 10 March 2026, the calculator adds 5 leap days (2008, 2012, 2016, 2020, 2024). People born on February 29 reach their birthday on February 28 in common years on AgeCountLab; some countries use March 1 for legal purposes.
Why Is My Calculated Age Different on Some Websites?
Calculated age differs between websites for 4 reasons: month length, time zone, end-date counting and leap-day birthdays.
- Month length. Some tools divide total days by the average month length of 30.42 days (365 ÷ 12) instead of counting calendar months, so their months and days are off by a day or two.
- Time zone. Calculator Soup sets “today” by Greenwich Mean Time (GMT). AgeCountLab uses the date on your device, so the two show different days near midnight.
- End date. Time & Date's duration calculator offers an option to include the end date, which adds 1 day to the count.
- February 29 birthdays. Each site picks February 28 or March 1 as the birthday in common years.
Find your age on any date
The age calculator turns a date of birth into years, months and days, then into total months, weeks and days, in one step.
Calculate your age