Enter a start time and the hours and minutes to add or subtract.
Formula
Result = Start time ± (Hours × 60 + Minutes)
Worked example
08:45 plus 3 h 30 min is 12:15.
Frequently asked questions
What if the result passes midnight?
The tool shows the time on the next day and notes the day change.
Can I subtract time?
Yes, choose Subtract.
Can I add more than 24 hours?
Yes, the day change shows how many days later it is.
Related calculators
Results are estimates for information only. Check important figures with a professional.