Subtract Time Calculator
Take time away from a duration or a clock time, for example to work out when to start.
First duration
Minus
1h 15m 0s
How do you subtract time?
How do you subtract time? Subtract seconds, then minutes, then hours. If a column goes negative, borrow 60 from the next column. For example, 5:10 − 2:45: borrow an hour to make 4:70, then 4:70 − 2:45 = 2:25.
How to use the subtract time calculator
- Choose "Duration minus duration" or "Clock time minus duration".
- Enter both values.
- The answer appears instantly, marked if it falls on the previous day.
Features
- Correct borrowing across units
- Negative results shown clearly
- Previous-day indicator for clock times
Good for
- Working back from a deadline
- Time left in a match or exam
- Planning when to put dinner on
More calculators
See all- Time Duration CalculatorExact time between two dates and times.
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- Date Difference CalculatorDays, weeks, months and weekdays between dates.
- Days Until a DateHow many days until any date.
- Days Since a DateHow many days have passed since a date.
- Day of the Week CalculatorWhich weekday any date falls on.