Instant · Precise · Universal
28 units available
6 categories total
To convert hours to minutes: multiply by 60. To convert hours to seconds: multiply by 3,600.
1 h = 60 min = 3,600 s = 3.6 × 10⁶ ms. There are 24 hours in a day and 8,760 in a non-leap year.
For example, 1 Hour (h) = 0.0001140771161 Year (Julian) (yr (Jul)).
| Hour (h) | Year (Julian) (yr (Jul)) |
|---|---|
| 0.1 | 0.00001140771161 |
| 0.5 | 0.00005703855807 |
| 1 | 0.0001140771161 |
| 2 | 0.0002281542323 |
| 5 | 0.0005703855807 |
| 10 | 0.001140771161 |
| 25 | 0.002851927903 |
| 50 | 0.005703855807 |
| 100 | 0.01140771161 |
| 500 | 0.05703855807 |
| 1000 | 0.1140771161 |
The hour is a unit of time equal to 60 minutes, or 3,600 seconds.
1 h = 60 min = 3,600 s = 3.6 × 10⁶ ms. There are 24 hours in a day and 8,760 in a non-leap year.
To convert hours to minutes: multiply by 60. To convert hours to seconds: multiply by 3,600.
Work schedules, flight durations, speed limits (km/h, mph), cooking times, and pay rates (hourly wages).
Before mechanical clocks, 'hours' varied by season — a summer daytime hour was longer than a winter one. These were called 'temporal hours.'
Converting decimal hours to minutes/seconds incorrectly: 2.5 h = 2 h 30 min, not 2 h 50 min. Think base-60.
The kilowatt-hour (kWh) on your electric bill is energy = power × time. 1 kWh = using 1,000 watts for 1 hour.
The Julian year is a unit of time equal to exactly 365.25 days (31,557,600 seconds), used as a standard in astronomy.
1 Julian year = 365.25 days = 8,766 hours = 31,557,600 seconds exactly.
To convert Julian years to seconds: multiply by 31,557,600. To common years: multiply by 365.25/365.
Defining the light-year, expressing stellar evolutionary timescales, and standardizing astronomical time intervals.
The Julian year is exactly 365.25 days — no exceptions. This simplicity is why astronomers prefer it over the variable Gregorian year.
Confusing the Julian year (365.25 d) with the Julian calendar (which has a specific leap year pattern). They are related but distinct.
When astronomers say 'light-year,' they mean the distance light travels in one Julian year (365.25 days), not a calendar year.



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