Add time calculator
Add hours and minutes to a time of day, or add lengths of time together.
Not legal, tax or payroll advice. General information only; results are estimates. Read the full notice.
Examples: 9:00 AM plus 3 h 45 min is 12:45 PM. Adding 8 h 45 min, 1 day 2 h 20 min and 5 h 50 min gives 1 day 16 h 55 min, which is 40:55 (40.92 decimal).
Estimate based on what you entered. Not legal or payroll advice; check it against your employer's records.
How to use it
- To find a later time, use Add hours and minutes to a time. Type the start time and the hours and minutes to add.
- To add lengths of time, use Add lengths of time. Type days, hours and minutes in each row.
- Read the answer. Times past midnight say Next day.
Related
Going the other way? Try the subtract time calculator. For a list of hours and minutes with some added and some subtracted, use the hours and minutes calculator.
Questions
How do I add hours to a time?
Type the start time, then the hours and minutes to add. The answer is the clock time that many hours and minutes later. If it passes midnight, the Day line says Next day.
How do I add two lengths of time, like 5 h 50 min and 8 h 45 min?
Use the Add lengths of time calculator. Type the days, hours and minutes for each row and the total appears. Every 60 minutes carries into an hour and every 24 hours into a day.
Does it work with 24-hour time?
Yes. Type 17:30 or 1730 for the start time. The answer is shown in 12-hour time with the 24-hour time below it.
What if I type a time without AM or PM?
The calculator reads it as AM and says so. Add AM or PM to change it.