Age Calculator
Find your exact calendar age and see how long remains until your next birthday.
Your exact age
0
Years
0
Months
0
Days
Total months
0
Completed months
Total weeks
0
Total days
0
Elapsed calendar days
Born on
—
Day of the week
Next birthday
until the celebration
Calculate an exact age between two dates
Enter a date of birth and a date to measure against. The calculator separates the interval into complete calendar years, months, and days, then shows useful totals and the next birthday.
Step by step
- Choose the date of birth.
- Keep today as the age-at date or select another date.
- Select Calculate age to view the exact age, elapsed totals, birth weekday, and birthday countdown.
Common uses
- Check an age for forms, applications, or event eligibility.
- Find a person’s age on a past or future date.
- Plan a birthday by checking the date and remaining days.
Good to know
Calendar months have different lengths, so years and months are calculated as calendar units rather than by dividing the total number of days. For a February 29 birth date, February 28 is used as the birthday in non-leap years. All calculations happen in your browser.
Frequently asked questions
How is exact age calculated?
The tool counts complete calendar years, then complete calendar months, followed by the remaining days between the selected dates.
Can I calculate age on a past or future date?
Yes. Change the age-at date to any valid date that is on or after the date of birth.
Are the dates saved?
No. The dates and results remain in your browser and are not sent to FreeToolBase.
Keep working
Related tools
More calculators tools you can use for free.
Profit Margin & Markup Calculator
Calculate profit, margin, and markup from cost and selling price.
NewFreelance Rate Calculator
Estimate the hourly freelance rate needed to reach an income goal.
NewWorking Days Calculator
Count business days between two dates with configurable weekends.
NewLoan & EMI Calculator
Estimate monthly loan payments, total repayment, and interest.