Time convert.conversions

21 conversiones time units supported.

Popular Time Conversions

Hour to Minuteh -> min

Minute to Secondmin -> s

Day to Hourd -> h

Week to Daywk -> d

Year (365 days) to Dayyr -> d

Year (365 days) to Month (30 days)yr -> mo

Month (30 days) to Weekmo -> wk

Year (365 days) to Secondyr -> s

Decade to Year (365 days)dec -> yr

Century to Year (365 days)c -> yr

All Time Units

Click any conversion below to open the dedicated calculator with detailed formulas, conversion tables, and common values.

Second -> Millisecond Second -> Microsecond Second -> Nanosecond Second -> Picosecond Second -> Minute Second -> Hour Second -> Day Second -> Week Second -> Fortnight Second -> Month (30 days)Second -> Year (365 days)Second -> Year (Leap)Second -> Decade Second -> Century Second -> Millennium Second -> Sidereal Day Second -> Sidereal Year Second -> Tropical Year Second -> Shake Second -> Planck Time Millisecond -> Second Millisecond -> Microsecond Millisecond -> Nanosecond Millisecond -> Picosecond Millisecond -> Minute Millisecond -> Hour Millisecond -> Day Millisecond -> Week Millisecond -> Fortnight Millisecond -> Month (30 days)Millisecond -> Year (365 days)Millisecond -> Year (Leap)Millisecond -> Decade Millisecond -> Century Millisecond -> Millennium Millisecond -> Sidereal Day Millisecond -> Sidereal Year Millisecond -> Tropical Year Millisecond -> Shake Millisecond -> Planck Time Microsecond -> Second Microsecond -> Millisecond Microsecond -> Nanosecond Microsecond -> Picosecond Microsecond -> Minute Microsecond -> Hour Microsecond -> Day Microsecond -> Week Microsecond -> Fortnight Microsecond -> Month (30 days)Microsecond -> Year (365 days)Microsecond -> Year (Leap)Microsecond -> Decade Microsecond -> Century Microsecond -> Millennium Microsecond -> Sidereal Day Microsecond -> Sidereal Year Microsecond -> Tropical Year Microsecond -> Shake Microsecond -> Planck Time Nanosecond -> Second Nanosecond -> Millisecond Nanosecond -> Microsecond Nanosecond -> Picosecond Nanosecond -> Minute Nanosecond -> Hour Nanosecond -> Day Nanosecond -> Week Nanosecond -> Fortnight Nanosecond -> Month (30 days)Nanosecond -> Year (365 days)Nanosecond -> Year (Leap)Nanosecond -> Decade Nanosecond -> Century Nanosecond -> Millennium Nanosecond -> Sidereal Day Nanosecond -> Sidereal Year Nanosecond -> Tropical Year Nanosecond -> Shake Nanosecond -> Planck Time Picosecond -> Second Picosecond -> Millisecond Picosecond -> Microsecond Picosecond -> Nanosecond Picosecond -> Minute Picosecond -> Hour Picosecond -> Day Picosecond -> Week Picosecond -> Fortnight Picosecond -> Month (30 days)Picosecond -> Year (365 days)Picosecond -> Year (Leap)Picosecond -> Decade Picosecond -> Century Picosecond -> Millennium Picosecond -> Sidereal Day Picosecond -> Sidereal Year Picosecond -> Tropical Year Picosecond -> Shake Picosecond -> Planck Time Minute -> Second Minute -> Millisecond Minute -> Microsecond Minute -> Nanosecond Minute -> Picosecond Minute -> Hour Minute -> Day Minute -> Week Minute -> Fortnight Minute -> Month (30 days)Minute -> Year (365 days)Minute -> Year (Leap)Minute -> Decade Minute -> Century Minute -> Millennium Minute -> Sidereal Day Minute -> Sidereal Year Minute -> Tropical Year Minute -> Shake Minute -> Planck Time Hour -> Second Hour -> Millisecond Hour -> Microsecond Hour -> Nanosecond Hour -> Picosecond Hour -> Minute Hour -> Day Hour -> Week Hour -> Fortnight Hour -> Month (30 days)Hour -> Year (365 days)Hour -> Year (Leap)Hour -> Decade Hour -> Century Hour -> Millennium Hour -> Sidereal Day Hour -> Sidereal Year Hour -> Tropical Year Hour -> Shake Hour -> Planck Time Day -> Second Day -> Millisecond Day -> Microsecond Day -> Nanosecond Day -> Picosecond Day -> Minute Day -> Hour Day -> Week Day -> Fortnight Day -> Month (30 days)Day -> Year (365 days)Day -> Year (Leap)Day -> Decade Day -> Century Day -> Millennium Day -> Sidereal Day Day -> Sidereal Year Day -> Tropical Year Day -> Shake Day -> Planck Time Week -> Second Week -> Millisecond Week -> Microsecond Week -> Nanosecond Week -> Picosecond Week -> Minute Week -> Hour Week -> Day Week -> Fortnight Week -> Month (30 days)Week -> Year (365 days)Week -> Year (Leap)Week -> Decade Week -> Century Week -> Millennium Week -> Sidereal Day Week -> Sidereal Year Week -> Tropical Year Week -> Shake Week -> Planck Time Fortnight -> Second Fortnight -> Millisecond Fortnight -> Microsecond Fortnight -> Nanosecond Fortnight -> Picosecond Fortnight -> Minute Fortnight -> Hour Fortnight -> Day Fortnight -> Week Fortnight -> Month (30 days)Fortnight -> Year (365 days)Fortnight -> Year (Leap)Fortnight -> Decade Fortnight -> Century Fortnight -> Millennium Fortnight -> Sidereal Day Fortnight -> Sidereal Year Fortnight -> Tropical Year Fortnight -> Shake Fortnight -> Planck Time Month (30 days) -> Second Month (30 days) -> Millisecond Month (30 days) -> Microsecond Month (30 days) -> Nanosecond Month (30 days) -> Picosecond Month (30 days) -> Minute Month (30 days) -> Hour Month (30 days) -> Day Month (30 days) -> Week Month (30 days) -> Fortnight Month (30 days) -> Year (365 days)Month (30 days) -> Year (Leap)Month (30 days) -> Decade Month (30 days) -> Century Month (30 days) -> Millennium Month (30 days) -> Sidereal Day Month (30 days) -> Sidereal Year Month (30 days) -> Tropical Year Month (30 days) -> Shake Month (30 days) -> Planck Time Year (365 days) -> Second Year (365 days) -> Millisecond Year (365 days) -> Microsecond Year (365 days) -> Nanosecond Year (365 days) -> Picosecond Year (365 days) -> Minute Year (365 days) -> Hour Year (365 days) -> Day Year (365 days) -> Week Year (365 days) -> Fortnight Year (365 days) -> Month (30 days)Year (365 days) -> Year (Leap)Year (365 days) -> Decade Year (365 days) -> Century Year (365 days) -> Millennium Year (365 days) -> Sidereal Day Year (365 days) -> Sidereal Year Year (365 days) -> Tropical Year Year (365 days) -> Shake Year (365 days) -> Planck Time Year (Leap) -> Second Year (Leap) -> Millisecond Year (Leap) -> Microsecond Year (Leap) -> Nanosecond Year (Leap) -> Picosecond Year (Leap) -> Minute Year (Leap) -> Hour Year (Leap) -> Day Year (Leap) -> Week Year (Leap) -> Fortnight Year (Leap) -> Month (30 days)Year (Leap) -> Year (365 days)Year (Leap) -> Decade Year (Leap) -> Century Year (Leap) -> Millennium Year (Leap) -> Sidereal Day Year (Leap) -> Sidereal Year Year (Leap) -> Tropical Year Year (Leap) -> Shake Year (Leap) -> Planck Time Decade -> Second Decade -> Millisecond Decade -> Microsecond Decade -> Nanosecond Decade -> Picosecond Decade -> Minute Decade -> Hour Decade -> Day Decade -> Week Decade -> Fortnight Decade -> Month (30 days)Decade -> Year (365 days)Decade -> Year (Leap)Decade -> Century Decade -> Millennium Decade -> Sidereal Day Decade -> Sidereal Year Decade -> Tropical Year Decade -> Shake Decade -> Planck Time Century -> Second Century -> Millisecond Century -> Microsecond Century -> Nanosecond Century -> Picosecond Century -> Minute Century -> Hour Century -> Day Century -> Week Century -> Fortnight Century -> Month (30 days)Century -> Year (365 days)Century -> Year (Leap)Century -> Decade Century -> Millennium Century -> Sidereal Day Century -> Sidereal Year Century -> Tropical Year Century -> Shake Century -> Planck Time Millennium -> Second Millennium -> Millisecond Millennium -> Microsecond Millennium -> Nanosecond Millennium -> Picosecond Millennium -> Minute Millennium -> Hour Millennium -> Day Millennium -> Week Millennium -> Fortnight Millennium -> Month (30 days)Millennium -> Year (365 days)Millennium -> Year (Leap)Millennium -> Decade Millennium -> Century Millennium -> Sidereal Day Millennium -> Sidereal Year Millennium -> Tropical Year Millennium -> Shake Millennium -> Planck Time Sidereal Day -> Second Sidereal Day -> Millisecond Sidereal Day -> Microsecond Sidereal Day -> Nanosecond Sidereal Day -> Picosecond Sidereal Day -> Minute Sidereal Day -> Hour Sidereal Day -> Day Sidereal Day -> Week Sidereal Day -> Fortnight Sidereal Day -> Month (30 days)Sidereal Day -> Year (365 days)Sidereal Day -> Year (Leap)Sidereal Day -> Decade Sidereal Day -> Century Sidereal Day -> Millennium Sidereal Day -> Sidereal Year Sidereal Day -> Tropical Year Sidereal Day -> Shake Sidereal Day -> Planck Time Sidereal Year -> Second Sidereal Year -> Millisecond Sidereal Year -> Microsecond Sidereal Year -> Nanosecond Sidereal Year -> Picosecond Sidereal Year -> Minute Sidereal Year -> Hour Sidereal Year -> Day Sidereal Year -> Week Sidereal Year -> Fortnight Sidereal Year -> Month (30 days)Sidereal Year -> Year (365 days)Sidereal Year -> Year (Leap)Sidereal Year -> Decade Sidereal Year -> Century Sidereal Year -> Millennium Sidereal Year -> Sidereal Day Sidereal Year -> Tropical Year Sidereal Year -> Shake Sidereal Year -> Planck Time Tropical Year -> Second Tropical Year -> Millisecond Tropical Year -> Microsecond Tropical Year -> Nanosecond Tropical Year -> Picosecond Tropical Year -> Minute Tropical Year -> Hour Tropical Year -> Day Tropical Year -> Week Tropical Year -> Fortnight Tropical Year -> Month (30 days)Tropical Year -> Year (365 days)Tropical Year -> Year (Leap)Tropical Year -> Decade Tropical Year -> Century Tropical Year -> Millennium Tropical Year -> Sidereal Day Tropical Year -> Sidereal Year Tropical Year -> Shake Tropical Year -> Planck Time Shake -> Second Shake -> Millisecond Shake -> Microsecond Shake -> Nanosecond Shake -> Picosecond Shake -> Minute Shake -> Hour Shake -> Day Shake -> Week Shake -> Fortnight Shake -> Month (30 days)Shake -> Year (365 days)Shake -> Year (Leap)Shake -> Decade Shake -> Century Shake -> Millennium Shake -> Sidereal Day Shake -> Sidereal Year Shake -> Tropical Year Shake -> Planck Time Planck Time -> Second Planck Time -> Millisecond Planck Time -> Microsecond Planck Time -> Nanosecond Planck Time -> Picosecond Planck Time -> Minute Planck Time -> Hour Planck Time -> Day Planck Time -> Week Planck Time -> Fortnight Planck Time -> Month (30 days)Planck Time -> Year (365 days)Planck Time -> Year (Leap)Planck Time -> Decade Planck Time -> Century Planck Time -> Millennium Planck Time -> Sidereal Day Planck Time -> Sidereal Year Planck Time -> Tropical Year Planck Time -> Shake

About time units

This category covers 21 time units and every ordered conversion between them, which is 420 dedicated pages in total. The units included here are Second (s), Millisecond (ms), Microsecond (µs), Nanosecond (ns), Picosecond (ps), Minute (min), Hour (h), Day (d), Week (wk), Fortnight (fn), Month (30 days) (mo), Year (365 days) (yr), Year (Leap) (yr), Decade (dec), Century (c), Millennium (kyr), Sidereal Day (sid day), Sidereal Year (sid yr), Tropical Year (trop yr), Shake (shake), Planck Time (tP). Each unit is defined against a single canonical reference for the category, so a conversion between any two of them is carried out as two exact steps: the input value is first expressed in the reference unit, then re-expressed in the target unit. Routing every pair through one reference rather than storing a factor for each combination keeps the whole category internally consistent and means a correction to one definition propagates everywhere it is used.

Precision and rounding

Conversions are computed in double-precision floating point and displayed at the precision you choose, so the value shown is a rounded view of a more exact internal result rather than the result itself. Where a factor is defined exactly by treaty or standard, the arithmetic is exact to the limits of the representation; where a factor derives from a measured physical quantity, the trailing digits carry the uncertainty of the underlying measurement. For engineering and scientific work, carry the full precision through intermediate steps and round only the final figure, since rounding at each stage of a multi-step calculation accumulates error.

How to use this page

Pick any pair above to open its dedicated converter, which shows the formula, the exact factor, a table of common values and the source the definition is taken from. The search box filters the pair list by unit name or symbol, which is the quickest route when a category carries many closely named units. Every conversion is calculated in your browser, so pages continue to work offline once visited and no input value is ever sent to a server.