Example
From 1 January 2026 to 15 January 2026 there are 14 days (exactly 2 weeks).
From the same start to 1 March 2026 the day count is larger, and the calendar breakdown may show 2 months exactly (depending on month lengths).
Use this calculator to find how many days fall between two calendar dates, plus a breakdown in weeks and a calendar span in years, months, and days. Choose a Start date and End date.
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Select two dates to calculate the difference.
Differences use full calendar days in your local timezone. Order is normalized so the span is non-negative.
What is a date difference?
The date-to-date difference counts how many midnights pass between two calendar dates. It answers questions like “How many days until an exam?” or “How long did a project run?”