Age calculator
Your age in completed years and elapsed days.
DATE & TIMEDays between dates
Calculate days and weeks between two dates.
A LITTLE MORE CLARITY
Distance between dates
250
daysExample result · Adjust the inputs to make it yours
Complete weeks35
Remaining days5
UNDERSTAND THE HOW
More than a result. An explanation.
Calendar dates are compared in UTC to avoid daylight saving changes. The end date is excluded.
days = |end − start| / 86,400,000Assumptions and limitations
Calendar days, not business days. Holidays are not applied. Order does not change the absolute distance.
A simple example
February 28 to March 1, 2024 spans 2 days.
Are my inputs stored?
No. Processing stays in your browser. Only tool IDs and timestamps are kept in your recent history; password generation is excluded.
Formula visible · Updated September 8, 2026
Worked example and interpretation
January 1 to January 8 is 7 elapsed days, not a count that includes both endpoints. February 28 to March 1, 2024 is 2 days because 2024 was a leap year.
What to check
These are calendar days, not business days. Holidays and weekends remain included. Use Hours and duration for shifts and breaks; date differences need not equal actual hours across daylight-saving changes.