Unit converter

Time converter

Convert seconds, minutes, hours, days, weeks, and fixed calendar approximations.

Enter a value and choose units. Results update instantly.

1 min = 60 s

All Time units

From 1 min
UnitValue
Nanosecond ns 60,000,000,000
Microsecond μs 60,000,000
Millisecond ms 60,000
Second s 60
Minute min 1
Hour h 0.0166666667
Day d 0.0006944444
Week wk 0.0000992063
Average Gregorian month mo 0.0000228159
Julian year a 0.0000019013
Recent conversions
  1. Your recent conversions stay on this device.

Common tasks

Minute to Secondmin to s Hour to Minuteh to min Day to Hourd to h Week to Daywk to d Millisecond to Secondms to s Julian year to Daya to d

Reference

How time conversion works

Elapsed time units through weeks have fixed lengths. Month and year entries use clearly labeled average or Julian values and should not replace calendar-aware date arithmetic.

Values are converted to second first, then from that reference into the requested unit. Keeping a single documented reference reduces inconsistent pair-by-pair constants.

Accuracy note: Use the Date Calculators for calendar months, leap years, daylight saving transitions, and business days.

Unit reference

UnitSymbol1 unit in s
Nanosecondns0.000000001
Microsecondμs0.000001
Millisecondms0.001
Seconds1
Minutemin60
Hourh3,600
Dayd86,400
Weekwk604,800
Average Gregorian monthmo2,629,746
Julian yeara31,557,600

Long-tail directory

Every indexed conversion

Choose a source unit to see all available destinations.

From Millisecond (ms)
Millisecond to SecondMillisecond to MinuteMillisecond to HourMillisecond to DayMillisecond to WeekMillisecond to Average Gregorian monthMillisecond to Julian year
From Second (s)
Second to MillisecondSecond to MinuteSecond to HourSecond to DaySecond to WeekSecond to Average Gregorian monthSecond to Julian year
From Minute (min)
Minute to MillisecondMinute to SecondMinute to HourMinute to DayMinute to WeekMinute to Average Gregorian monthMinute to Julian year
From Hour (h)
Hour to MillisecondHour to SecondHour to MinuteHour to DayHour to WeekHour to Average Gregorian monthHour to Julian year
From Day (d)
Day to MillisecondDay to SecondDay to MinuteDay to HourDay to WeekDay to Average Gregorian monthDay to Julian year
From Week (wk)
Week to MillisecondWeek to SecondWeek to MinuteWeek to HourWeek to DayWeek to Average Gregorian monthWeek to Julian year
From Average Gregorian month (mo)
Average Gregorian month to MillisecondAverage Gregorian month to SecondAverage Gregorian month to MinuteAverage Gregorian month to HourAverage Gregorian month to DayAverage Gregorian month to WeekAverage Gregorian month to Julian year
From Julian year (a)
Julian year to MillisecondJulian year to SecondJulian year to MinuteJulian year to HourJulian year to DayJulian year to WeekJulian year to Average Gregorian month

Primary source

Definitions and standards

Conversion constants and definitions for this category are checked against BIPM SI Brochure: Units of time.

See Methods & sources for rounding rules, exact-value handling, and review policy.

Questions

Time FAQ

What is the reference unit for time conversions?

ConvertWin uses second (s) as the internal reference for this category, then converts to the selected output unit.

How accurate is this time converter?

Use the Date Calculators for calendar months, leap years, daylight saving transitions, and business days.