Convert a duration from hours to seconds. This is useful when a calculation, timer, experiment, or computer program needs time expressed in seconds.
Hours to Seconds Formula
One hour contains 60 minutes, and each minute contains 60 seconds:
1 h = 60 min × 60 s/min = 3,600 s
To convert hours to seconds, multiply the number of hours by 3,600:
Seconds = hours × 3,600
Written as a unit conversion:
Hours × (3,600 seconds ÷ 1 hour) = seconds
Example: Convert 2.5 hours to seconds
Multiply 2.5 by 3,600:
2.5 h × 3,600 s/h = 9,000 s
Therefore, 2.5 hours equals 9,000 seconds.
Converting Hours and Minutes to Seconds
If a duration includes both hours and minutes, convert each part separately and then add the results.
Example: Convert 1 hour and 20 minutes
First, convert the hour:
1 × 3,600 = 3,600 seconds
Next, convert the 20 minutes:
20 × 60 = 1,200 seconds
Add the two results:
3,600 + 1,200 = 4,800 seconds
Hours to Seconds Conversion Table
| Hours (h) | Seconds (s) |
|---|---|
| 0.1 h | 360 s |
| 0.25 h | 900 s |
| 0.5 h | 1,800 s |
| 0.75 h | 2,700 s |
| 1 h | 3,600 s |
| 1.5 h | 5,400 s |
| 2 h | 7,200 s |
| 2.5 h | 9,000 s |
| 3 h | 10,800 s |
| 4 h | 14,400 s |
| 5 h | 18,000 s |
| 8 h | 28,800 s |
| 10 h | 36,000 s |
| 12 h | 43,200 s |
| 24 h | 86,400 s |
| 48 h | 172,800 s |
| 72 h | 259,200 s |
When Is This Conversion Useful?
Hours are convenient for describing longer periods, but seconds are better for detailed calculations. Hours-to-seconds conversion is commonly used in experiments, computer programs, video processing, machinery records, countdown timers, and speed calculations.
For example, a program running once every second will run 28,800 times during an eight-hour period, assuming it runs continuously without interruption.
Hours to Seconds Questions and Answers
Convert Hours to Seconds
Enter a number of hours to calculate the equivalent duration in seconds.
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