Add Time Calculator (Hours and Minutes)
Add hours, durations, decimal hours, dates
Rules used: 1 hour = 60 minutes = 3,600 seconds; decimal hours = minutes ÷ 60 · Updated Oct 21, 2026
Add up a list of times — shifts, lap times, video clips — or subtract one. Type 7:45, 7h45, 45m or 1:30:15; the total carries minutes over 60 for you.
How to use the Add Time Calculator
- Type one time per line (7:45, 90m, 1:30:15).
- Use − on a line to subtract it.
- Add more lines with Add a line; the total updates as you type.
How to add hours and minutes
Add the hours and the minutes separately, then turn every 60 minutes into an hour. 7:45 + 8:30 + 6:50 = 21 hours 125 minutes = 23:05.
To subtract, borrow an hour when the minutes would go below zero: 8:15 − 0:45 = 7:75 − 0:45 = 7:30.
Hours and minutes calculator for timesheets
Adding a week of daily totals is the most common use. If you have clock-in and clock-out times instead of totals, the time card calculator does the subtraction for you.
Frequently asked questions
What is 7 hours 45 minutes plus 8 hours 30 minutes?
16 hours 15 minutes (16:15), or 16.25 decimal hours.
Can I add seconds?
Yes: type 1:30:15 or 1h 30m 15s and the result shows seconds too.
Can the total be more than 24 hours?
Yes. Totals are durations, not clock times, so 30:00 means thirty hours. The days-and-hours line shows it as 1 × 24 h + 6:00.
More time tools
Results are calculations from the times you enter. Pay figures are gross estimates before tax; your employment contract and local law decide what you are actually owed.