How many seconds are in one hour?
One hour contains exactly 3600 seconds.
Convert Hour (h) to Second (s) instantly.
Calculation
value × 3600
| Quick Conversion | Converted |
|---|---|
| 1 h | 3,600 s |
| 5 h | 18,000 s |
| 10 h | 36,000 s |
| 100 h | 360,000 s |
| 1,000 h | 3,600,000 s |
An hour is a time unit equal to 3600 seconds.
Hours are widely used for schedules, work time, travel, operations, media, and long-duration reporting.
h is used for work logs, uptime, travel duration, shifts, schedules, timers, planning, and elapsed-time summaries.
A second is the SI base unit of time.
Seconds are the standard unit for precise timekeeping, science, computing, sports, and everyday short-duration measurement.
s is used for timers, clocks, logs, physics, performance metrics, media, schedules, and short elapsed-time values.
Mathematically, second (s) = hour (h) converted with the formula below.
1 h = 3,600 s
1 s = 0.000278 h
Formula: value × 3600
Example: 15 h = 54,000 s
Precision note: Use the exact relationship of 3600 seconds per hour. Preserve fractional seconds when the hour value includes decimals.
1 h = 3,600 s
1 s = 0.000278 h
| Hour [h] | Second [s] |
|---|---|
| 0.01 h | 36 s |
| 0.1 h | 360 s |
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 5 h | 18,000 s |
| 10 h | 36,000 s |
| 20 h | 72,000 s |
| 50 h | 180,000 s |
| 100 h | 360,000 s |
One hour contains exactly 3600 seconds.
2.5 hours equals exactly 9000 seconds.
Use seconds when a calculation, timer, log, or system needs finer timing detail than hours provide.