Convert between seconds, minutes, hours, days, weeks and years.
Converted instantly in your browser.
How do you convert between seconds, minutes, hours and other time units?
Each value is converted to seconds, then to the target unit; for example, 2 hours = 120 minutes = 7,200 seconds. Months and years use averages (1 month ≈ 30.44 days, 1 year = 365.25 days). Seconds, minutes, hours, days and weeks are exact, while months and years vary, so standard averages are used.
Understanding your result
Seconds, minutes, hours, days and weeks are exact. Months and years vary, so this tool uses standard averages for them.
Formula and method
Each value is converted to seconds, then to the target unit. Months and years use averages (1 month ≈ 30.44 days, 1 year = 365.25 days).
Worked example
2 hours = 120 minutes = 7,200 seconds.
How to use this tool
- Enter the value to convert.
- Choose the units to convert from and to.
- Read the result and the full unit table.
Common mistakes to avoid
- Treating every month as 30 days — the average is about 30.44 days.
About the Time Unit Converter
Convert a duration between time units, from milliseconds up to years. Enter a value and see every unit at once.
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Frequently asked questions
How many seconds are in an hour?
There are 3,600 seconds in one hour.
Why are months approximate?
Months have different lengths, so the converter uses the average month of about 30.44 days.