Age Calculators
Find your exact age, age on a future date, or birthday countdowns.
Age Calculator
Find your exact age in years, months and days, plus a decimal age and total-days breakdown.
Age on a Specific Date Calculator
Find out how old someone was (or will be) on any specific date, not just today.
Decimal Age Calculator
Find your age expressed as a single decimal number of years (e.g. 27.43).
Age in Days Calculator
Find out exactly how many days old you are.
Age in Weeks Calculator
Find out exactly how many weeks old you are.
Age in Months Calculator
Find out exactly how many months old you are.
Age in Hours Calculator
Find out exactly how many hours old you are.
Age in Minutes Calculator
Find out exactly how many minutes old you are.
Age in Seconds Calculator
Find out exactly how many seconds old you are.
Baby Age Calculator
Find a baby's exact age in days, weeks and months — handy for pediatric milestones.
Age Difference Calculator
Find the exact age gap between two people, in years, months and days.
Parent-Child Age Difference Calculator
Find the exact age gap between a parent and child.
Sibling Age Difference Calculator
Find the exact age gap between siblings.
Birthday Calculator
Find your next birthday date and how old you'll turn.
Next Birthday Calculator
Find the exact date of your next birthday and how old you'll turn.
Birthday Countdown Calculator
Live countdown to your next birthday, updating every second.
Leap Year Birthday Calculator
For people born on February 29th — find when to celebrate in non-leap years, and count down to the next birthday.
Birth Year Calculator
Enter your current age to find your likely birth year (or year range).
Work Experience Calculator
Calculate total work experience from a job start date to today.
Service Length Calculator
Calculate total length of service from a start date to today.
Employee Tenure Calculator
Calculate an employee's exact tenure from their hire date to today.
Anniversary Calculator
Calculate how long you've been together and count down to your next anniversary.
Relationship Duration Calculator
Calculate exactly how long you've been in a relationship.
Retirement Age Calculator
Find the exact date you'll reach your chosen retirement age.
Retirement Date Calculator
Find your exact retirement date based on your birth date and target retirement age.
Years Until Retirement Calculator
Find out exactly how many years remain until your target retirement age.
Pension Age Calculator
Find the exact date you'll reach your pension eligibility age.
School Age Calculator
Check a child's exact age as of a school enrollment cutoff date.
Kindergarten Age Calculator
Check whether a child meets the age requirement for kindergarten by the enrollment cutoff date.
Grade Eligibility Calculator
Check whether a child meets the age requirement for a grade level by the enrollment cutoff date.
Pregnancy Due Date Calculator
Estimate your due date from the first day of your last menstrual period.
Pregnancy Week Calculator
Find out exactly how many weeks pregnant you are today.
Gestational Age Calculator
Calculate gestational age in weeks and days from the last menstrual period.
Age Milestone Calculator
See every major birthday and round-number day milestone (1,000, 10,000, 20,000 days old) for any birth date.
10,000 Days Old Calculator
Find the exact date you turn (or turned) 10,000 days old.
Marriage Age Eligibility Calculator
Check when someone reaches the commonly-cited legal marriage age.
Voting Age Calculator
Check when someone reaches the commonly-cited legal voting age.
Driving License Age Calculator
Check when someone reaches the commonly-cited minimum driving age.
Senior Citizen Eligibility Calculator
Check when someone reaches the commonly-cited senior citizen age for discounts and programs.
Insurance Age Calculator
Calculate your insurance age using the "age nearest birthday" convention many insurers use.
Dog Age Calculator
Convert your dog's age into human years using an accurate nonlinear formula.
Cat Age Calculator
Convert your cat's age into human years using an accurate nonlinear formula.
Pet Age Calculator
Convert your dog's or cat's age into human years.
Zodiac Age Calculator
Find your zodiac sign and exact current age together.
Planet Age Calculator
See your equivalent age on every planet in the solar system, based on orbital period.