Age
Age Calculator
Calculate exact age from a date of birth — in years, months, weeks and days — plus the next birthday.
Defaults to today
Age
26years
26y 7m 16d
Total months319
Total weeks1,389.29
Total days9,725
Next birthdayFriday, January 1, 2027
Days until next137
How it works
Your age is the calendar difference between your date of birth and a comparison date (today by default). We compute years, then remaining months, then remaining days — accounting for the actual length of each month and leap years.
Total weeks and total days are derived from the exact number of days lived. Next-birthday math handles February 29 birthdays by rolling to March 1 in non-leap years.
Frequently asked questions
- What if I was born on February 29?
- In non-leap years, your next birthday is shown as March 1. Your exact day count is unaffected.
- Can I calculate age at a specific past or future date?
- Yes. Change the 'Compare to' date to compute age at any point — for documents, school cut-offs, or planning.
- Why is total months not exactly years × 12 + months?
- It is — total months adds the years-component (×12) to the remaining months. Weeks and days come from the exact day count.