Adding Hours and Minutes Calculator
The Adding Hours and Minutes Calculator adds two durations entered as hours and minutes and returns the combined time, correctly carrying every 60 minutes into an extra hour. It also gives the total in decimal hours and in total minutes.
Formula
Total = (h1 × 60 + m1) + (h2 × 60 + m2) minutes, converted back to hours and minutes
- Each time is converted to minutes, the minutes are added, then the total is split back into whole hours and remaining minutes.
- Every 60 minutes carries over into one additional hour automatically.
- The total is also shown in decimal hours (total minutes ÷ 60) and as a plain minute count.
- Enter minutes as whole numbers from 0 upward — values of 60 or more are carried into hours.
Example Calculation
Inputs
- First time — hours: 2
- First time — minutes: 45
- Second time — hours: 1
- Second time — minutes: 30
Add 2h 45m and 1h 30m: 165 + 90 = 255 minutes, which is 4h 15m (4.25 hours).
Frequently asked questions
What does this calculator do?
It adds two durations given in hours and minutes and returns the total time, carrying every 60 minutes into an extra hour.
Does it handle minutes over 60?
Yes. If the minutes add up to 60 or more, the calculator carries them into hours — for example 45m + 30m becomes 1h 15m.
What is the decimal hours figure for?
It is the total expressed as a single decimal number of hours (total minutes ÷ 60), which is handy for timesheets and billing.
Can I add more than two times?
Add the first two, then use the running total as one of the inputs for the next addition.
How do I add a duration to a clock time instead?
This calculator adds durations. To add time to a specific clock time, use a time-of-day end-time calculator.