Direct conversion
Convert hour [h] to second [s] instantly with formula, examples, chart, and FAQs.
1 hour [h] = 3600 second [s]
1 hour [h] = 3600 second [s]
Example: 1 hour [h] equals 3600 second [s].
Time conversions use second as the reference unit. Calendar-style values such as average month and average Gregorian year are approximate by definition.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The hour is a time unit equal to 60 minutes or 3600 seconds.
HistoryHours have ancient roots in dividing the day and night into regular intervals.
Current useHours are used for work time, travel duration, billing, appointments, energy use, and daily planning.
The second is the SI base unit of time.
HistoryThe second moved from astronomical definitions to an atomic definition for high precision.
Current useSeconds are used in science, sports timing, computing, navigation, media, and everyday clocks.
| hour [h] | second [s] |
|---|---|
| 1 | 3600 |
| 2 | 7200 |
| 5 | 18000 |
| 10 | 36000 |
| 20 | 72000 |
| 25 | 90000 |
| 50 | 180000 |
| 100 | 360000 |
| 1000 | 3600000 |
Use this formula: 1 hour [h] = 3600 second [s] Enter your value in the calculator and the result updates instantly.
1 hour [h] equals 3600 second [s].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.