Adding Hours and Minutes Calculator
Enter up to four time durations as hours and minutes — get the combined total in hours and minutes, decimal hours, and a clock-face visualization.
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5 h 05 min
- 1
Duration 1 in minutes
1 × 60 + 30 = 90 - 2
Duration 2 in minutes
2 × 60 + 45 = 165 - 3
Duration 3 in minutes
0 × 60 + 50 = 50 - 4
Duration 4 in minutes
0 × 60 + 0 = 0 - 5
Total minutes
90 + 165 + 50 + 0 = 305 - 6
Total decimal hours
305 ÷ 60 = 5.0833
How does this calculator work?
Convert each duration to minutes (hours × 60 + minutes), add them all up, then divide by 60 for whole hours and take the remainder for leftover minutes. For example, 1h 30min + 2h 45min + 0h 50min = 305 min = 5h 05min = 5.0833 decimal hours.
Formula
How this is calculated
Each duration is converted to a total number of minutes: hours × 60 + minutes. All four totals are then summed. The combined minute total is divided by 60 to produce whole hours, and the remainder (using integer division modulo 60) gives the leftover minutes. For example, adding 1h 30min, 2h 45min, and 0h 50min gives (90 + 165 + 50) = 305 minutes = 5h 05min.
Unused duration slots (left at 0h 00min) contribute zero to the sum and are ignored in the count. The decimal-hours result is the total minutes divided by 60, useful for payroll or billing systems that work in decimal time (e.g. 5.0833 h for 5h 05min).
The clock face shows the total duration mapped onto a 12-hour clock face — the hour hand reflects the remainder after dividing by 12, while the minute hand shows the remaining minutes. This gives an intuitive visual sense of the duration even when the total exceeds 12 hours.
Frequently asked questions
Leave the unused duration slots at 0 hours and 0 minutes — they contribute nothing to the total. The "Durations added" stat in the output shows how many non-zero durations were included.
No — the minutes field for each duration must be between 0 and 59. If you have, say, 90 minutes, enter 1 hour and 30 minutes instead. The calculator validates this and shows a warning if any minutes value is out of range.
Decimal hours are common in payroll (e.g. 1.5 h for 1h 30min) and in spreadsheets where time is stored as a fraction of a day. To convert decimal hours to minutes manually, multiply the decimal part by 60.
Also known as
TG we-Calculate Editorial Team. (2026). Adding Hours and Minutes Calculator [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/adding-hours-and-minutes-calculator
TG we-Calculate Editorial Team. "Adding Hours and Minutes Calculator." TG we-Calculate. 2026. https://we-calculate.com/calculator/adding-hours-and-minutes-calculator.
TG we-Calculate Editorial Team, "Adding Hours and Minutes Calculator," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/adding-hours-and-minutes-calculator
@misc{wecalculate_adding_hours_and_minutes_calculator, title = {Adding Hours and Minutes Calculator}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/adding-hours-and-minutes-calculator}}, year = {2026}, note = {TG we-Calculate} }
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