Time Unit Converter
Enter a value in any unit and every other unit updates at once: milliseconds, seconds, minutes, hours, days, weeks, months (30.44 days) and years (365.24 days).
| Unit | Value |
|---|---|
| Milliseconds | 5,400,000 |
| Seconds | 5,400 |
| Minutes | 90 |
| Hours | 1.5 |
| Days | 0.0625 |
| Weeks | 0.008929 |
| Months (30.44 days) | 0.002053 |
| Years (365.24 days) | 1.7112e-4 |
| h:mm:ss | 1:30:00 |
Time unit FAQ
How many seconds are in a day?
86,400 seconds: 24 hours × 60 minutes × 60 seconds. A day with a leap second has 86,401, but civil time and this converter use 86,400.
How long is a month here?
30.44 days, the average length of a calendar month (365.24 ÷ 12). Use a date calculator when you need an exact calendar month rather than an average.
Why is a year 365.24 days?
The mean tropical year is about 365.2422 days, which is why the Gregorian calendar adds a leap day in most years divisible by four. This converter uses 365.24 days.
Updated 6 November 2026. Time zone data: IANA tz database.