Time Converter
The Time Converter works between milliseconds, seconds, minutes, hours, days, weeks, months and years — handy for project planning, scheduling and everyday math. Months and years use their average length, which the tool notes in the results.
What this means
Time conversion is exact for fixed units — a minute is always 60 seconds and an hour always 3,600 seconds. Months and years vary (28–31 days), so the converter uses the average month and year of the Gregorian calendar.
How we calculate it
Formula
Result = Value × (factor of source unit) ÷ (factor of target unit), defined exactly against the second (1 month = 30.44 days average).Worked example
How many minutes are in 2 hours?
- 11 hour = 3600 s, and 1 minute = 60 s
- 2Factor = 3600 ÷ 60 = 60
- 32 hours = 120 minutes
Important assumptions
- A month uses the average Gregorian month (30.44 days) and a year uses the average Gregorian year (365.24 days).
Frequently asked questions
How many seconds are in a day?
Exactly 86,400 seconds (24 × 60 × 60).
How long is the average month?
The average Gregorian month is 30.436875 days (365.2425 ÷ 12). This converter uses 30.44 days.
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