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Количество дней между датами

Подсчет общего числа календарных дней между двумя датами.

Days between two dates

Как это работает

  1. Days are counted directly on the calendar, one date at a time, never by dividing a millisecond difference, which goes wrong across daylight saving changes.
  2. The toggle switches convention: end date excluded (Jan 1 → Jan 3 = 2 days) or both endpoints included (= 3 days). The active convention is always labeled.
  3. The business-day figure uses a standard Saturday–Sunday weekend with no holidays; for your own weekend and holiday rules, use the Business Days Calculator.

Полезно знать

  • Enter the dates in either order: a reversed range is reported as such and the count stays meaningful.
  • Weekday counts include both endpoints regardless of the toggle, so the numbers can differ from the headline count by one.
  • Leap years and month boundaries are handled by the shared calendar engine (Feb 29 included).
Калькуляторы дат

Разница между датами

Точный расчет интервала между двумя датами в годах, месяцах, неделях и днях.

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Калькуляторы датПопулярное

Калькулятор рабочих дней

Подсчет рабочих дней между датами или прибавление рабочих дней без выходных.

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Калькуляторы дат

Сколько дней до даты

Расчет оставшихся дней до важного события или прошедших дней с момента даты.

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Калькуляторы дат

Прибавить или вычесть дни

Добавление или вычитание лет, месяцев, недель и дней из заданной даты.

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Часто задаваемые вопросы

Calendar days vs business days: which is shown?
Both. Calendar days count every date, whereas the business-day figure excludes your selected weekend days and any custom holidays you add.
Why not just divide the millisecond difference by 86,400,000?
Because that is wrong across daylight saving changes: some local days are 23 or 25 hours long. These calculators count calendar dates directly, so the result is right in every zone.
Is “from Jan 1 to Jan 3” two days or three?
Both are legitimate: 2 days elapsed, or 3 days inclusive of both endpoints. The toggle switches conventions, and the label always shows which is active.