Time Converter
Convert seconds, minutes, hours, days, weeks and years.
Convert between seconds, minutes, hours, days, weeks, months and years. Useful for scheduling, time tracking and quick estimates.
Formula / method
Examples
60 min
86,400 s
Seconds up to years
This tool converts a duration between seconds, minutes, hours, days, weeks and years using the standard ratios: 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day and 7 days in a week. A day is treated as 86,400 seconds.
Because everything is anchored to seconds internally, you can convert directly from, for example, minutes to days without chaining several steps together.
Why year lengths vary
Years are the fuzzy unit. A common calendar year is 365 days, but leap years add a day, so the long-term average is 365.25 days. Converting large spans can therefore differ by a day or more depending on which definition is used, which matters for interest, ageing or subscription calculations.
For the exact gap between two specific calendar dates, including real leap years, use the Date Difference Calculator rather than a fixed year length.
Where it's used
- Converting a task duration between minutes, hours, and days for planning
- Finding how many seconds or milliseconds are in a period when setting code timeouts
- Estimating how many hours a multi-day event or trip covers
- Converting subscription or contract lengths, such as weeks into days
- Checking elapsed time for cooking, charging, or long-running processes
Real-world examples
- A 90-minute meeting converts to 1.5 hours for a calendar block.
- A developer setting a timeout finds 2 days equals 172,800 seconds.
- A 3-week sprint converts to 21 days for a project schedule.
Did you know?
This tool treats a day as exactly 86,400 seconds, but Earth's rotation is not perfectly steady, so timekeepers have occasionally added a leap second to keep atomic clocks aligned with the planet.
FAQ
How long is a "month" here?
A month is treated as the average of 1/12 of a year (about 30.44 days), so conversions are consistent. Calendar months vary from 28 to 31 days.