Add or Subtract Time
Add hours and minutes to a clock time.
Result
5:15:00 PM
17:15:00 (24h)
Wraps around midnight automatically. If you add 5 hours to 10pm, you get 3am the next day with a "+1 day" indicator. Useful for shift schedules, oven timers, or international flight arrival math.
About
Pick a start time, the operation, and the hours and minutes to add or subtract. Get the resulting time in 12-hour and 24-hour formats. If you cross midnight, the day offset is shown.
How to use
- Enter the start time.
- Pick add or subtract.
- Enter hours and minutes.
- Read the result.
FAQ
Does this handle days?+
It tells you if the result wraps to the next day or back to the previous one. For multi-day arithmetic, use the date-add tool instead.