Time Converter

Convert a duration between seconds, minutes, hours, days, weeks, months and years, down to nanoseconds.

How to use the Time Converter

  1. Type the value you want to convert in the first box.
  2. Choose the unit you are converting from and the unit you want to convert to.
  3. Read the result instantly. Use the swap button to reverse the direction, or copy the result with one click.

Popular time conversions

ConversionResultFormula
Hours to minutes1 h = 60 minminutes = hours × 60
Minutes to hours1 min = 0.0166667 hhours = minutes ÷ 60
Minutes to seconds1 min = 60 sseconds = minutes × 60
Seconds to minutes1 s = 0.0166667 minminutes = seconds ÷ 60
Days to hours1 d = 24 hhours = days × 24
Hours to days1 h = 0.0416667 ddays = hours ÷ 24
Weeks to months1 wk = 0.229979 momonths = weeks × 0.22997947
Months to weeks1 mo = 4.34821 wkweeks = months × 4.3482143
Hours to seconds1 h = 3,600 sseconds = hours × 3,600
Seconds to hours1 s = 0.000277778 hhours = seconds ÷ 3,600
Weeks to days1 wk = 7 ddays = weeks × 7
Days to weeks1 d = 0.142857 wkweeks = days ÷ 7
Years to days1 yr = 365.25 ddays = years × 365.25
Days to years1 d = 0.00273785 yryears = days ÷ 365.25
Milliseconds to seconds1 ms = 0.001 sseconds = milliseconds ÷ 1,000
Seconds to milliseconds1 s = 1,000 msmilliseconds = seconds × 1,000
Days to minutes1 d = 1,440 minminutes = days × 1,440
Minutes to days1 min = 0.000694444 ddays = minutes ÷ 1,440
Years to hours1 yr = 8,766 hhours = years × 8,766
Hours to years1 h = 0.000114077 yryears = hours ÷ 8,766
Months to days1 mo = 30.4375 ddays = months × 30.4375
Days to months1 d = 0.0328542 momonths = days ÷ 30.4375

Supported time units

UnitSymbolEqual to
Seconds1 s
Millisecondms0.001 s
Microsecondµs0.000001 s
Nanosecondns0.000000001 s
Minutemin60 s
Hourh3,600 s
Dayd86,400 s
Weekwk604,800 s
Fortnightfn1,209,600 s
Month (average)mo2,629,800 s
Year (365.25 days)yr31,557,600 s
Decadedec315,576,000 s
Centuryc3,155,760,000 s

Time unit relationships

Seconds, minutes, hours, days and weeks have fixed ratios: 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day and 7 days in a week. Months and years vary in length, so this converter uses averages: a year of 365.25 days (which accounts for leap years) and a month of one twelfth of that, 30.4375 days.

For an exact count between two calendar dates, use the date difference calculator instead.

Handy figures

  • 1 day = 1,440 minutes = 86,400 seconds
  • 1 week = 168 hours
  • 1 year ≈ 8,766 hours ≈ 525,960 minutes

Frequently asked questions

How many seconds are in a day?

There are 86,400 seconds in a day (24 × 60 × 60).

How many hours are in a year?

A common year has 8,760 hours and a leap year has 8,784. Using the average year of 365.25 days gives 8,766 hours.

How many minutes are in a week?

A week has 10,080 minutes (7 × 24 × 60).

How many weeks are in a year?

A year has 52 weeks plus one day (two days in a leap year), or about 52.18 weeks on average.

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