Калькулятор времени

Calculate time difference, duration between two times, add or subtract hours and minutes, and convert between time units — all with step-by-step solutions.

Рассчитать

Format: HH:MM or HH:MM:SS (24h)

Select a calculation type, enter your values, and click Calculate to see results with step-by-step solution.

Полное руководство пользователя

About This Calculator

This time calculator handles four common time operations: finding the difference between two clock times, adding or subtracting a duration from a time, converting between time units (seconds, minutes, hours, days, weeks), and calculating the duration between a start and end time — with automatic midnight-crossing support.

4 Calculation Types

Разница во времени

Find the exact difference between two clock times in hours, minutes, and seconds.

Add / Subtract

Add or subtract hours, minutes, seconds, or days from any clock time.

Конвертировать единицы

Convert between seconds, minutes, hours, days, and weeks.

Продолжительность

Посчитайте, сколько времени прошло от начала до конца. Обеспечивает ночной/полночный переход.

Key Formulas

Difference: |Time₂ − Time₁| (in seconds)

Добавлять: Time + Amount → mod 86400

Convert: Value × FromFactor ÷ ToFactor

Продолжительность: End − Start (или 86400 − Start + End)

Важные примечания

  • Используйте 24-часовой формат: от 0:00 до 23:59. Например, 14:30 = 14:30.
  • Duration handles midnight crossing: Start 22:00, End 06:00 = 8 hours.
  • Добавить/вычесть обертки около 24 часов. Вычитание после полуночи добавляет 24 часа.
  • 1 день = 86 400 секунд, 1 неделя = 604 800 секунд.

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