Hours to Seconds Converter
Convert any hours into seconds
Hours Conversion Tools
Hours to Minutes
Instant conversion from hours to minutes.
Hours to Days
Convert hours into days accurately.
Hours to Weeks
Convert hours into weeks accurately.
Hours to Months
Calculate hours into months using average values.
Hours to Years
Convert hours into years easily & instantly.
Hours to Decades
Convert hours into decades instantly.
Hours to Centuries
Convert hours into centuries instantly & accurately.
Hours to Seconds
Convert hours into seconds instantly.
Hours to Milliseconds
Convert hours into milliseconds instantly.
Hours to Microseconds
Quick hours to microseconds calculation
Hours to Nanoseconds
Calculate hours in nanoseconds quickly.
How to Use the Hours to Seconds Converter
Follow these simple steps to get accurate results using the hours to seconds calculator:
Enter whole numbers or decimal values in the first input box (hour).
The result in seconds will instantly appear in the conversion result box below.
Click the Copy Result button to save your calculation.
No manual calculation needed — everything updates automatically.
How to convert hours to seconds
To convert hours to seconds, you simply need to multiply the number of hours by 3,600. This is because one hour contains 60 minutes, and each minute contains 60 seconds (60 × 60 = 3,600).
Formula:
Seconds = Hours × 3,600
Examples:
1 Hour = 3,600 Seconds
2 Hours = 7,200 Seconds
5 Hours = 18,000 Seconds
10 Hours = 36,000 Seconds
How many seconds are in one hour?
There are exactly 3,600 seconds in one standard hour.
This is calculated as:
60 minutes × 60 seconds = 3,600 seconds
What is an hour?
An hour is a unit of time equal to 60 minutes, 3,600 seconds, or 1/24 of a day. It is commonly used to measure daily time, schedules, and work periods.
What is a second?
The second is the base unit of time in the International System of Units (SI). It is the foundation for measuring minutes, hours, and even longer periods like days or years.
Hours to seconds conversion table
This calculator supports both whole numbers and decimal values for precise results.
| Hours (hr) | Seconds (sec) | Decimal Hours | Seconds (sec) |
|---|---|---|---|
| 1 hr | 3,600 sec | 0.5 hr | 1,800 sec |
| 2 hr | 7,200 sec | 1.25 hr | 4,500 sec |
| 5 hr | 18,000 sec | 2.5 hr | 9,000 sec |
| 10 hr | 36,000 sec | 3.75 hr | 13,500 sec |
| 24 hr | 86,400 sec | 12.5 hr | 45,000 sec |
Pros and Cons
Pros:
Instant conversion results
Supports whole numbers and decimal values
Works both ways (swap units)
100% accurate standard formula
Desktop, tablet, and mobile-friendly
Cons:
Requires an internet connection
Basic unit conversion only
You can also convert time differences between countries using our Time Difference Calculator.
Frequently Asked Questions
How do I convert hours to seconds?
Enter a whole number or decimal value in the hours input field. The result in seconds will instantly appear in the conversion result box.
Can I convert decimal hours?
Yes. Enter the decimal number of hours in the first input box. The result in seconds will instantly appear in the conversion result box. The calculator supports decimal values like 0.5, 1.25, or 2.75 hours.
How many seconds are in 1 hour?
There are exactly 3,600 seconds in one hour.
Does this calculator work instantly?
Yes. The result updates automatically as soon as you enter a value.
Can I convert seconds back to hours?
Yes. Use the swap button to reverse the conversion.