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) = 3.600000e+21 Attosecond (as).
| Hour (h) | Attosecond (as) |
|---|---|
| 0.1 | 3.600000e+20 |
| 0.5 | 1.800000e+21 |
| 1 | 3.600000e+21 |
| 2 | 7.200000e+21 |
| 5 | 1.800000e+22 |
| 10 | 3.600000e+22 |
| 25 | 9.000000e+22 |
| 50 | 1.800000e+23 |
| 100 | 3.600000e+23 |
| 500 | 1.800000e+24 |
| 1000 | 3.600000e+24 |
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 attosecond is a unit of time equal to 10⁻¹⁸ seconds — one quintillionth of a second.
1 as = 10⁻¹⁸ s = 0.001 fs. Light travels only about 0.3 nm (the width of a water molecule) in one attosecond.
To convert as to seconds: multiply by 10⁻¹⁸. To convert as to femtoseconds: divide by 1,000.
No everyday applications yet. Research applications include tracking electron motion and developing future ultrafast electronics.
An attosecond is to one second as one second is to about 31.7 billion years — roughly twice the age of the universe.
Confusing 'as' (attosecond) with the English word 'as'. In scientific texts, context and formatting prevent ambiguity.
The 2023 Nobel Prize in Physics was awarded for attosecond pulse generation — this field is at the frontier of ultrafast science.



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