시간 계산기

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

믿다

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.

전체 사용자 가이드

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

시차

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.

단위 변환

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

지속

처음부터 끝까지의 시간을 계산합니다. 야간/자정 횡단을 처리합니다.

Key Formulas

Difference: |Time₂ − Time₁| (in seconds)

추가하다: Time + Amount → mod 86400

Convert: Value × FromFactor ÷ ToFactor

지속: End − Start (또는 86400 − Start + End)

중요 사항

  • 24시간 형식(0:00~23:59)을 사용합니다. 예를 들어 오후 2시 30분 = 14시 30분입니다.
  • Duration handles midnight crossing: Start 22:00, End 06:00 = 8 hours.
  • 더하기/빼기는 약 24시간 동안 진행됩니다. 자정 이후를 빼면 24시간이 더해집니다.
  • 1일 = 86,400초, 1주 = 604,800초.

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