Time Unit Converter
Convert seconds, minutes, hours, days, weeks, months and years.
Converted to every unit
About this time unit converter
Converting between time units is simple until you get to months and years, which vary in length. This converter handles seconds through decades and uses the average Gregorian month (30.436875 days) and year (365.2425 days) for long spans.
For exact calendar spans between specific dates, use the days between dates calculator instead.
How to use the Time Unit Converter
- Type the value you want to convert.
- Choose the unit you're converting from and the unit you want.
- Read the result — the table below shows the value in every other unit.
- Use Swap to reverse the conversion.
Conversion factors
1 h = 60 min = 3,600 s · 1 d = 24 h · 1 yr ≈ 365.2425 d
Seconds are the base. 1 minute = 60 s, 1 hour = 3,600 s, 1 day = 86,400 s, 1 week = 604,800 s, 1 average month = 2,629,746 s and 1 average year = 31,556,952 s.
Worked example
2.5 hours is 150 minutes or 9,000 seconds. One million seconds is about 11.57 days.
Common conversions
| Hour → Minute | 1 h = 60 min | 5 h = 300 min | 10 h = 600 min |
|---|---|---|---|
| Minute → Second | 1 min = 60 s | 5 min = 300 s | 10 min = 600 s |
| Day → Hour | 1 d = 24 h | 5 d = 120 h | 10 d = 240 h |
| Week → Day | 1 wk = 7 d | 5 wk = 35 d | 10 wk = 70 d |
| Year (average) → Day | 1 yr = 365.2425 d | 5 yr = 1,826.2125 d | 10 yr = 3,652.425 d |
Tips for better results
- For timesheets, convert minutes to decimal hours by dividing by 60.
Frequently asked questions
How many seconds are in a day?
86,400 seconds.
How many hours are in a year?
8,760 in a 365-day year, 8,784 in a leap year, about 8,766 on average.
Last reviewed: October 2026 · Results are calculated in your browser.