Hour (h)
Exactly 3600 seconds.
What is an hour?
- Symbol
- h
- Quantity
- Time
- Unit system
- SI-accepted
- Definition
- Exactly 3600 seconds.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for working time, travel time and as the time part of speed units such as km/h.
Hour in other time units
- 1 h = 3600000000000 nsNanosecond
- 1 h = 3600000000 µsMicrosecond
- 1 h = 3600000 msMillisecond
- 1 h = 3600 sSecond
- 1 h = 60 minHour to Minute converter
- 1 h ≈ 0.04166666667 dHour to Day converter
- 1 h ≈ 0.005952380952 wkWeek
- 1 h ≈ 0.0001140771161 yrYear (Julian)
Hour quick reference
| Hour | Minute | Day | Nanosecond |
|---|---|---|---|
| 1 h | = 60 min | ≈ 0.04166666667 d | = 3600000000000 ns |
| 10 h | = 600 min | ≈ 0.4166666667 d | = 36000000000000 ns |
| 100 h | = 6000 min | ≈ 4.166666667 d | = 360000000000000 ns |
| 1000 h | = 60000 min | ≈ 41.66666667 d | = 3.6e+15 ns |
Where the hour fits
The next smaller time unit is the minute (min). 1 h = 60 min, and 1 min ≈ 0.01666666667 h.
The next larger time unit is the day (d). 1 h ≈ 0.04166666667 d, and 1 d = 24 h.
Frequently asked questions
- How many minutes are in one hour?
- One hour = 60 min (minutes).
- How many days are in one hour?
- One hour ≈ 0.04166666667 d (days).
- How many nanoseconds are in one hour?
- One hour = 3600000000000 ns (nanoseconds).