Age & DatesDATE & AGE TOOL
Days Alive Calculator
Calculate how many days, weeks, hours and minutes you have lived.
How this calculator works
This tool uses calendar dates directly. Date differences are calculated from UTC-normalized calendar dates to avoid daylight-saving-time changes affecting the result. Calendar age counts complete months from the starting date, then remaining days. When a month is shorter, the date is clamped to its last day. For this tool, a 29 February birthday is observed on 28 February in a non-leap year. These are calculation conventions, not legal eligibility rules.
Why use this tool?
It is designed for quick, transparent calculations without requiring an account. Your date inputs are processed in your browser by the current version of the site.
Frequently asked questions
Does this calculator account for leap years?
Yes. Calendar calculations use the actual dates in the Gregorian calendar, including leap years.
Do you store my date of birth?
The calculator processes dates locally in your browser. We do not send the entered dates as analytics events. See our privacy information for site analytics details.
Keep exploring
How many days have I been alive?
This calculator counts elapsed calendar days between your birth date and the selected date. The birth date itself is day zero. It also divides that total by seven to show complete weeks and leftover days.
Worked example
From 1 January 2024 to 1 January 2025 there are 366 elapsed days, or 52 complete weeks and 2 days.