Age Calculator Online Free — Calculate Exact Age from Date of Birth
Our free online age calculator tells you exactly how old you are in years, months, weeks, days, and even hours. Enter your date of birth and get instant results — no signup, no app needed. Also shows days until your next birthday.
How to Calculate Your Age Online
- Step 1: Enter your date of birth in the date field
- Step 2: Click Calculate Age
- Step 3: See exact age in years, months, weeks, days and hours
- Step 4: See your next birthday countdown
Age Between Two Dates
Switch to Between Two Dates tab to calculate the exact time difference between any two dates — useful for calculating age at a specific date, time elapsed since an event, or days between dates.
How Many Days Old Am I?
The calculator shows your total days lived. For reference: a 20-year-old has lived ~7,305 days, a 25-year-old ~9,131 days, and a 30-year-old ~10,957 days.
Common Uses for Age Calculator
- Find exact age for official documents and forms
- Calculate age of children for school admission
- Check retirement age eligibility
- Calculate age difference between two people
- Find days until next birthday
- Calculate age of a historical figure