Hours to Seconds (h to s)
Free online hour to second converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
TIME CONVERTER — INSTANT RESULT
Formula: multiply the hour value by 3,600 — i.e. s = h × 3,600
Quick check: 1 h = 3,600 s
Quick check: 1 h = 3,600 s
Hours to Seconds conversion table
| Hours (h) | Seconds (s) |
|---|---|
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 3 h | 10,800 s |
| 4 h | 14,400 s |
| 5 h | 18,000 s |
| 6 h | 21,600 s |
| 7 h | 25,200 s |
| 8 h | 28,800 s |
| 9 h | 32,400 s |
| 10 h | 36,000 s |
| 15 h | 54,000 s |
| 20 h | 72,000 s |
| 25 h | 90,000 s |
| 30 h | 108,000 s |
| 40 h | 144,000 s |
| 50 h | 180,000 s |
| 75 h | 270,000 s |
| 100 h | 360,000 s |
| 250 h | 900,000 s |
| 500 h | 1,800,000 s |
| 1,000 h | 3,600,000 s |
How to convert hours to seconds
To convert hours to seconds, multiply the amount in hours by 3,600. For example, 10 h = 36,000 s. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between seconds, minutes, hours, days, weeks, months and years. Calendar months and years vary, so this converter uses the Gregorian averages (1 year = 365.2425 days, 1 month = 1/12 year).
Frequently asked questions
How many seconds are in one hour?
One hour is exactly 3,600 seconds.
How do I convert h to s?
Multiply the h value by 3,600 to get s. The converter at the top of this page does this automatically and works in both directions.
How much is 100 hours in seconds?
100 hours equals 360,000 seconds.