Calculate your exact age and see how long until your next birthday.
Leave this as today to calculate your current age.
The Numelios Age Calculator helps calculate age from a date of birth to a selected date. It can show age in years, months, and days, along with additional time-based information such as total months, weeks, or days depending on the calculator output.
It can be useful for birthdays, school or eligibility checks, age comparisons, and general date calculations.
Age is calculated by comparing the date of birth with the selected reference date and accounting for the number of completed years, months, and days between the two dates.
Calendar months have different lengths, and leap years can also affect the number of days between two dates.
Suppose a person was born on January 1, 2000 and the reference date is January 1, 2026.
A person's age is usually expressed in completed years, but a more detailed calculation can also show the additional months and days since the most recent birthday.
This can be useful when an exact age is needed rather than a rounded number of years.
Leap years contain an additional day in February. Because of this, the exact number of days between two dates may differ depending on whether one or more leap years fall within the period.
An age calculator should use actual calendar dates rather than assuming every year contains exactly the same number of days.
Calculate an exact current age or determine the time until the next birthday.
Exact age may be useful for applications, registrations, competitions, or other age-based requirements.
Compare two dates and calculate the amount of time between them.
Age calculations can help with milestone planning, schedules, and time-based goals.
If you need to calculate changes between values as percentages, use the Percentage Calculator .
For a health-related calculation using height and weight, the BMI Calculator can estimate body mass index.
Enter your date of birth and compare it with today's date or another selected reference date. The calculator can then determine completed years, months, and days.
A calendar-based age calculation should account for leap years and the actual number of days in each month.
Yes, if the calculator allows a custom reference date, you can estimate how old someone will be on a future date.
Calendar years can include leap days, so the exact day count is not always equal to the number of years multiplied by 365.
Yes. A completed year of age is reached on the corresponding birthday date in the following year.
This calculator is provided for informational and educational purposes only. Results are based on the dates entered and may vary if dates are incomplete or entered incorrectly.