Калькулятор продолжительности времени
Calculate duration between times, add or subtract durations, convert between time units, and find elapsed time — with step-by-step solutions.
Рассчитать
Select a calculation type, enter your values, and click Calculate to see results with step-by-step solution.
Результат
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Пошаговое решение
Полное руководство пользователя
What Is Time Duration?
Time duration is the amount of time that passes between two points, or the length of a time interval. This calculator finds duration between clock times, adds or subtracts duration from a time, converts between 7 time units (seconds to years), and computes end time from a start time and elapsed duration — with automatic midnight-crossing support.
4 Calculation Types
Продолжительность между временами
Enter start and end time. Duration can cross midnight. Shows result in seconds, minutes, hours, and days.
Add / Subtract
Add or subtract hours, minutes, seconds, or days from any clock time.
Конвертировать единицы
Convert between seconds, minutes, hours, days, weeks, months, and years.
Elapsed Time
From a start time and elapsed duration, find when it ends. Shows days elapsed.
Key Formulas
Продолжительность: End − Start (или 86400 − Start + End)
Добавлять: Time + Duration → mod 86400
Convert: Value × FromFactor ÷ ToFactor
Elapsed: Start + Duration = End
Важные примечания
- Используйте 24-часовой формат: от 0:00 до 23:59. Полуночный переход осуществляется автоматически.
- Months and years are approximate: 1 month = 30 days, 1 year = 365 days.
- Истекшее время показывает, на сколько дней позже наступит время окончания.