Time Converter
Convert between seconds, minutes, hours, days, weeks, months and years. Months are counted as 30 days and years as 365 days, so results for long spans are approximate.
Enter a value
Result
1 hours =
60 min
1 × 60 = 60
Months count as 30 days and years as 365 days, so long spans are approximate
Show the working
- 1. Convert 1 h to seconds: 1 × 3,600 = 3,600.
- 2. Convert to min: 3,600 ÷ 60 = 60.
1 h in every unit
Useful totals
- A day
- 86,400 seconds
- A week
- 168 hours
- A year
- 8,760 hours
Good to know: For exact date gaps, use the Days Calculator instead.
About this tool
Convert time between seconds, minutes, hours, days, weeks, and years — useful for scheduling, planning, and duration calculations.
Formula
1 minute = 60 s, 1 hour = 3,600 s, 1 day = 86,400 s. All conversions derive from seconds.
Reference values
- 1 hour = 3,600 seconds
- 1 day = 24 hours
- 1 year ≈ 365.25 days
Questions people ask
How many seconds are in a day?
86,400.
How many weeks are in a year?
About 52.14 (365 ÷ 7).
Why does a month here equal 30 days?
Real months vary from 28 to 31 days, so a fixed 30 days keeps the maths consistent. For exact dates, use the Days Calculator.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
Spotted a mistake? Tell us and we'll check it. How we check our calculators