Days Until Calculator
Count down the days to any date, or days since it.
Frequently Asked Questions
How are the days counted?
The tool compares midnight today with midnight on the target date in your local timezone, so the result is a whole number of calendar days with no partial-day rounding surprises.
Can I count days since a past event?
Yes. Pick any past date and the tool reports how many days have passed since it, along with week, month and hour equivalents. It is handy for anniversaries and habit streaks.
Why use average months?
Calendar months vary from 28 to 31 days, so months are shown using the average month length of 30.44 days (365.25 divided by 12). It is an approximation for planning, not an exact calendar count.
Is the Days Until Calculator free, and is my data private?
Yes. It is completely free and every calculation runs locally in your browser, so the numbers and dates you enter are never uploaded, stored, or shared with anyone.
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