Time Converter
Convert between seconds, minutes, hours, days, weeks, months, years.
Click any card to enter a value in that unit — all others update instantly.
—
Milliseconds
—
Seconds
—
Minutes
Hours
—
Days
—
Weeks
—
Months
—
Years
Common Time References
1 second = 1,000 milliseconds
1 minute = 60 seconds
1 hour = 3,600 seconds
1 day = 86,400 seconds
1 week = 604,800 seconds
1 month = ≈ 2,629,800 seconds
1 year = 365.25 days
1 year = 8,766 hours
1 year = 525,960 minutes
1 year = ≈ 31,557,600 seconds
1 year = ≈ 31.5 million seconds
1 decade = 10 years / 3,652.5 days
Frequently Asked Questions
How many seconds are in a day, month, and year?
1 day = 86,400 seconds (24 × 60 × 60). 1 month (30 days) ≈ 2,592,000 seconds. 1 year = 31,536,000 seconds (365 days) or 31,622,400 in a leap year. There are exactly 604,800 seconds in a week.
How many hours are in a year?
A non-leap year = 8,760 hours (365 × 24). A leap year = 8,784 hours (366 × 24). Average accounting for leap years: 8,765.82 hours/year. Working hours in a typical year: ~2,080 (40 hours/week × 52 weeks).
How do I convert decimal hours to hours and minutes?
The whole number part is the hours. Multiply the decimal part by 60 to get minutes. Example: 2.75 hours = 2 hours + (0.75 × 60) = 2 hours 45 minutes. This converter handles this automatically.