Convert Hours to Seconds
If you want to know how many seconds in an hour or need to convert hours to seconds for a project, you are in the right place. One hour is exactly 3600 seconds. You can use the free calculator below to do the math for any amount of time.
Hours to seconds converter
Quick Reference
Hours to Seconds Conversion Table
Here is a quick reference guide showing exactly how many seconds are in an hour up to a full 24 hours. We do the math so you do not have to.
| Hours | Calculation | Seconds (sec) |
|---|---|---|
| 0.1 hour | 0.1 × 3600 | 360 sec |
| 1/4 hour | 0.25 × 3600 | 900 sec |
| 1/3 hour | 0.333333 × 3600 | 1200 sec |
| 1/2 hour | 0.5 × 3600 | 1800 sec |
| 3/4 hour | 0.75 × 3600 | 2700 sec |
| 1 hour | 1 × 3600 | 3600 sec |
| 1.5 hours | 1.5 × 3600 | 5400 sec |
| 2 hours | 2 × 3600 | 7200 sec |
| 3 hours | 3 × 3600 | 10800 sec |
| 5 hours | 5 × 3600 | 18000 sec |
| 8 hours | 8 × 3600 | 28800 sec |
| 10 hours | 10 × 3600 | 36000 sec |
| 12 hours | 12 × 3600 | 43200 sec |
| 24 hours | 24 × 3600 | 86400 sec |
Step by Step
How to Convert Hours to Seconds
Turning hours to seconds is simple once you know the rule.
The Formula
We measure time in hours and seconds every day. The exact rule you need to remember is that 1 hour is exactly 3600 seconds.
If you want to go backward and convert seconds back to hours, just divide those seconds by 3600.
How to Calculate It
Start with your hours
Pick the number of hours you want to figure out. Let us use 2 hours as an example.
Multiply by 3600
Take 2 and multiply it by 3600. That gives you 7200 seconds.
Label your answer
Write sec or seconds after your number so people know what you mean. Now you know 2 hours is 7200 seconds.
Hours vs Seconds
Understanding Hours and Seconds
We use hours to track long things like work shifts and road trips. We use seconds for quick moments and exact timers.
To figure out how many seconds are in 8 hours or a full day, just grab a calculator and multiply the hours by 3600. You will get an exact answer every time.
People use this basic math for programming apps, timing sports events, and tracking heavy work sessions.
Popular Searches
Common Hours to Seconds Conversions
We process thousands of time requests. Here is how to figure out the hours to seconds conversion for some of the most common times people need.
1 hour to seconds
One hour is exactly 3600 seconds. This is the main rule for all time math.
2 hours to seconds
Multiply 2 by 3600. Two hours gives you exactly 7200 seconds.
3 hours to seconds
For 3 hours, multiply by 3600. You get 10800 seconds.
4 hours to seconds
Take 4 and multiply it by 3600. Four hours equals exactly 14400 seconds.
5 hours to seconds
Multiply 5 by 3600. That means 5 hours is equal to 18000 seconds.
6 hours to seconds
Take 6 and multiply by 3600. Six hours is 21600 seconds.
8 hours to seconds
A standard 8 hour workday is long. If you multiply 8 by 3600, you will find it is 28800 seconds.
10 hours to seconds
Take 10 and multiply by 3600. Ten hours equals 36000 seconds.
12 hours to seconds
Half a day is 12 hours. If you multiply 12 by 3600, you get exactly 43200 seconds.
24 hours to seconds
A full day has 24 hours. Multiply 24 by 3600. That gives you 86400 seconds in a single day.
FAQ
Frequently Asked Questions
Quick answers to the most common questions about tracking time.