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Time units converter — seconds, minutes, hours, days
This time converter instantly converts any value to all common time units at once: seconds, minutes, hours, days, weeks, months and years. Enter a number, choose the input unit, and the result appears immediately. Useful for project planning, scientific calculations and date conversions.
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How we calculate time units
All values are converted through the common base unit — seconds. Conversion factors: 1 min = 60 s, 1 h = 3600 s, 1 day = 86,400 s, 1 week = 604,800 s. Month is taken as 30.4375 days (365.25 ÷ 12), year as 365.25 days (accounting for leap years).
Example calculation
1 hour = 3600 seconds, 60 minutes, ≈ 0.0417 days, ≈ 0.00595 weeks, ≈ 0.00137 months and ≈ 0.000114 years. 1 year (365.25 days) = 31,557,600 seconds, 525,960 minutes or 8766 hours.
Frequently asked questions
How many seconds are in one hour?
One hour has 3600 seconds: 1 hour = 60 minutes, and 1 minute = 60 seconds, so 60 × 60 = 3600 seconds.
How many minutes are in a day?
One day (24 hours) has 1440 minutes: 24 × 60 = 1440 minutes.
How many seconds are in a day?
One day has 86,400 seconds: 24 × 60 × 60 = 86,400.
How many days are in a year?
A regular year has 365 days; a leap year has 366 days. For averaged calculations, 365.25 days per year is used, accounting for a leap year every 4 years.
How many weeks are in a year?
A year has 52 full weeks and 1 or 2 extra days. Precisely: 365 ÷ 7 ≈ 52.14 weeks. A leap year (366 days) gives ≈ 52.29 weeks.
How many seconds are in a week?
One week has 604,800 seconds: 7 × 24 × 60 × 60 = 604,800.
How many days are in an average month?
The average month is approximately 30.4375 days (365.25 ÷ 12). Calendar months have 28, 29, 30 or 31 days; the calculator uses the averaged value for accurate conversions.
How do I convert hours to days?
Divide the number of hours by 24. For example, 72 hours ÷ 24 = 3 days. The calculator does this automatically.
How do I convert minutes to hours?
Divide the number of minutes by 60. For example, 150 minutes ÷ 60 = 2.5 hours (2 hours and 30 minutes). The calculator displays the result as a decimal.
What is this time converter useful for?
This converter is useful for project planning (converting work hours), travel time calculations, physics and maths (SI unit conversions), and data analysis where time is expressed in different units.
Results are indicative. The calculator uses an averaged month (30.4375 days) and year (365.25 days). Exact calendar lengths may differ.
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