Calculators & everyday math
Converting Between Hours, Minutes, and Seconds
Durations get written in many ways — 90 minutes, 1:30:00, 1.5 hours, 5,400 seconds — and they all mean the same thing. This guide shows how to convert between hours, minutes, and seconds in both directions.
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The basic factors
| From | To | Multiply by |
|---|---|---|
| Hours | Minutes | 60 |
| Minutes | Seconds | 60 |
| Hours | Seconds | 3,600 |
| Minutes | Hours | 1 ÷ 60 |
| Seconds | Hours | 1 ÷ 3,600 |
Splitting seconds into hours, minutes, and seconds
- Divide by 3,600 for the hours: 10,000 seconds ÷ 3,600 = 2 hours, with 2,800 seconds left.
- Divide what is left by 60 for the minutes: 2,800 ÷ 60 = 46 minutes, with 40 seconds left.
- 10,000 seconds is 2 hours 46 minutes 40 seconds.
Minutes into hours and minutes
Divide by 60: 135 minutes is 2 hours 15 minutes, or 2.25 hours.
Decimal hours
To turn 3.6 hours into hours and minutes, multiply the decimal part by 60: 0.6 × 60 = 36, so 3.6 hours is 3 hours 36 minutes. In seconds, it is 3.6 × 3,600 = 12,960.
Hours, Minutes, Seconds FAQ
- How many seconds are in an hour?
- 3,600.
- How do I convert 150 minutes to hours?
- Divide by 60: 2.5 hours, or 2 hours 30 minutes.
- How do I convert seconds to hours, minutes, and seconds?
- Divide by 3,600 for the hours, divide what is left by 60 for the minutes, and the remainder is the seconds.
- What is 1.25 hours in minutes?
- 75 minutes.
- How many minutes are in a day?
- 1,440.
Related guides
- Add Hours and MinutesAdd lengths of time by hand with carrying, total a list of durations, and add times in a spreadsheet without the total wrapping past 24 hours.
- Decimal HoursConvert between hours and minutes and decimal hours for timesheets, with a quick conversion table and the mistakes that change a total.
Open the tool
Jump into Time Duration Calculator when you are ready to process your files.
