Date Difference
Days and weeks between two dates.
Days and weeks between two dates.
Calculate age and date differences or convert between Gregorian and Hijri dates.
Exact age in years, months and days.
Open calculatorDays and weeks between two dates.
Convert any Gregorian date to Hijri (official Umm al-Qura calendar).
Open calculatorConvert a Hijri date to Gregorian with the weekday.
Open calculatorHow many days until the deadline? How long between two events? Counting on a calendar invites off-by-one errors and leap-year slips. This calculator returns the exact gap between any two dates in days, weeks, and approximate months.
Both dates are converted to absolute timestamps and subtracted, so month lengths and leap years are handled automatically. The result is shown as whole days, then as weeks (÷ 7) and average months (÷ 30.44).
30.44 is the average month length (365.25 ÷ 12). The order of dates doesn't matter — the difference is absolute.
From 1 January 2026 to 19 July 2026: 199 days, which is about 28.4 weeks or roughly 6.5 average months.
This counts the nights between the dates: Monday to Wednesday is 2 days. For inclusive counting (e.g., rental days covering both endpoints), add 1 to the result.
Because months vary from 28 to 31 days, 'months between dates' has no single exact answer. Dividing by the 30.44-day average gives the most useful general-purpose figure.
Yes — the subtraction works on real calendar dates, so 29 February is counted whenever it falls inside the interval.
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