Time Unit Converter
Convert time units fast and precisely – all units at a glance
- Updated
You can type in either field.
Result in Hour (h)
0.01666667h
0.016666671 min equals 0.01666667 h.
In all units
Tap a unit to make it the target.
Your value is about 6.26 × 100 m world record (Bolt, 2009).
- 100 m world record (Bolt, 2009)0.002661 h
- Your value0.01666667 h
- Football match (90 minutes)1.5 h
- Lunar phase cycle (≈ 29.53 days)708.7 h
- Year (365 days)8,760 h
Bars on a logarithmic scale, values rounded.
How this was calculated
Both units are converted via the base unit s: 1 min = 60 s and 1 h = 3,600 s.
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Time units: overview and conversion factors
Second, minute, hour, day and week
The International System of Units (SI) defines the second as the base unit of time. Since 1967, the second has been exactly defined via the radiation of the caesium-133 atom: one second corresponds to 9,192,631,770 oscillation periods of this radiation. This definition enables atomic clocks with an accuracy of less than one second of deviation over millions of years – the foundation for GPS, mobile networks and global time synchronization.
The minute (60 seconds) and the hour (3,600 seconds) go back to the Babylonian sexagesimal system – a number system based on 60 that is over 4,000 years old. The number 60 is highly divisible (by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20 and 30), which allows fractions without decimals. Via Greek and Arab astronomers, the system found its way into Western science and our time system today.
In everyday work, converting between minutes and hours is especially relevant: time tracking, project planning and billing by hourly rate often require converting decimal hours into hours and minutes. 1.5 hours equals 1 hour and 30 minutes, 0.25 hours equals 15 minutes. For sports timers, recipes or travel times, seconds, minutes and hours are used together depending on context – our calculator takes care of the conversion for you.
Days and weeks are calendar units that can also be derived from the second: 1 day = 86,400 seconds, 1 week = 604,800 seconds. In software development, logistics and project planning, time spans in days and weeks play a central role. Note: our calculator uses mean days (86,400 seconds) – leap seconds and daylight saving time changes are not taken into account, as these are irrelevant for most everyday applications.
Quick reference: the most important time conversions
Common conversions at a glance
- 1 minute = 60 seconds
- Basis for all time calculations
- 1 hour = 60 minutes
- = 3,600 seconds
- 1 day = 24 hours
- = 1,440 minutes = 86,400 seconds
- 1 week = 7 days
- = 168 hours = 604,800 seconds
- 0.5 hours = 30 minutes
- Decimal hours to minutes
- 1.25 hours = 75 minutes
- Useful for time tracking
Calculation examples
- Formula
- minutes ÷ 60 = hours
- Value
- 90 min
- Divisor
- 60
- Result
- 1.5 h
- Formula
- days × 24 = hours
- Value
- 2 d
- Factor
- 24
- Result
- 48 h
- Formula
- seconds ÷ 3,600 = hours
- Value
- 3,600 s
- Divisor
- 3,600
- Result
- 1 h
Frequently asked questions about the time unit converter
Everything about seconds, minutes, hours, days and weeks
How many seconds are in an hour?
One hour equals 60 minutes × 60 seconds = 3,600 seconds. Conversely: 1 second = 1/3,600 hour ≈ 0.000278 hours. For quick mental math: 1 minute = 60 seconds, 1 hour = 3,600 s, 1 day = 86,400 s.
How do I convert minutes to hours?
Minutes ÷ 60 = hours. Example: 90 minutes ÷ 60 = 1.5 hours = 1 hour 30 minutes. For decimal hours: 0.5 h = 30 min, 0.25 h = 15 min, 0.75 h = 45 min.
How many hours are in a week?
One week equals 7 days × 24 hours = 168 hours. Or in seconds: 7 × 86,400 = 604,800 seconds. In working life, a 40-hour week equals 2,400 minutes or 144,000 seconds.
Why are there 60 seconds per minute and 60 minutes per hour?
The division into 60 comes from the Babylonian sexagesimal system (base 60), which is over 4,000 years old. 60 is particularly well-suited for fractions: it is divisible by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20 and 30 – ideal for fractions without decimals. The Babylonians adopted the system from the Sumerians, and it was passed on to our time system via Greek astronomers.
How do I convert hours and minutes separately?
For mixed values like 2 h 45 min, calculate as follows: first convert hours to minutes (2 × 60 = 120 min), then add (120 + 45 = 165 min total). Our calculator works with plain numbers – enter the total value in one unit and read the result in the other.