An hour has 3,600 seconds: 60 minutes × 60 seconds. A day has 86,400 seconds and a week 604,800.
3,600 seconds
1 hour = 3,600 seconds
| Unit | Amount |
|---|---|
| Milliseconds | 3,600,000 |
| Seconds | 3,600 |
| Minutes | 60 |
| Days | 0.0417 |
| Weeks | 0.006 |
| Months | 0.0014 |
| Years | 0.0001141 |
| Decades | 0.00001141 |
| Centuries | 0.000001141 |
How it’s calculated
Every unit is converted through seconds: 1 minute = 60 s, 1 hour = 3,600 s, 1 day = 86,400 s, 1 week = 604,800 s. Months and years use the Gregorian average: 1 year = 365.2425 days = 31,556,952 s, 1 month = 1/12 year = 2,629,746 s.
Worked example with your numbers
- 1 hour × 3,600 seconds per hour = 3,600 seconds.
- 3,600 seconds ÷ 1 seconds per second = 3,600 seconds.
Quick answer
An hour has 3,600 seconds: 60 minutes × 60 seconds.
- Minute
- 60 seconds
- Hour
- 3,600 seconds
- Day
- 86,400 seconds
- Week
- 604,800 seconds
| Unit | Seconds | Days | Years |
|---|---|---|---|
| 1 millisecond | 0.001 | 0.00000001157 | 0.000000000032 |
| 1 second | 1 | 0.00001157 | 0.00000003169 |
| 1 minute | 60 | 0.0006944 | 0.000001901 |
| 1 hour | 3,600 | 0.041667 | 0.0001141 |
| 1 day | 86,400 | 1 | 0.00273791 |
| 1 week | 604,800 | 7 | 0.01916535 |
| 1 month | 2,629,746 | 30.436875 | 0.08333333 |
| 1 year | 31,556,952 | 365.2425 | 1 |
| 1 decade | 315,569,520 | 3,652.425 | 10 |
| 1 century | 3,155,695,200 | 36,524.25 | 100 |
1 decade = 10 years; 1 century = 100 years; 1 millennium = 1,000 years. Months and years use the Gregorian average (365.2425 days a year).
How it works
To turn seconds into hours, divide by 3,600: 9,000 seconds = 2.5 hours.
Frequently asked questions
How many minutes are in an hour?
60.