Does it matter which date I enter first?
No. The Days Between Two Dates calculator works regardless of which date is earlier — the result is always a positive number of days.
Calculators
Date Calculator
Find the number of days between two dates, or add/subtract days from a date. Everything runs locally in your browser.
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Days Between Two Dates
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Add or Subtract Days From a Date
FAQ
Date Calculator FAQ
How is the "months" figure calculated?
It's an approximation based on total days divided by 30.44 (the average month length), useful for a rough sense of scale rather than a calendar-exact month count.
Does this handle leap years correctly?
Yes. Day counts are computed from calendar dates directly, so leap years (and February 29) are automatically accounted for.
How is this different from the Age Calculator?
The Age Calculator is built specifically around a birth date and today's date, with age framed in years/months/days. This tool works with any two arbitrary dates, or lets you add/subtract days from a single date.