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User Guide
This conversion tool will convert a period of time duration from one measurement unit to another and display a conversion table.
- Enter the duration of time you would like to convert in the upper input box.
- Select the corresponding unit of time from the e upper shortcut buttons or pull down options.
- Select the unit of time you wish to convert to, from the lower shortcut buttons or pull down options.
- The converted time period will display in the lower answer box.
Conversion Factors
The following units of time converted into seconds (SI units for time) are used by this time conversion tool:
Gregorian Calendar Units
Constant Units
- second (s, sec) – 1 s
- minute (min) – 60 s
- hour (h) – 3600 s
- day (d) – 86400 s
- week (wk) – 604800 s
Averaged Units
These units for month and year are derived from the Gregorian mean calendar year duration of 365.2425 days.
- month (mo, mth) – 2,629,746 s
- year (yr) – 31,556,952 s
Astronomical Units
- julian year (a) – 31,557,600 s
Seconds SI Metric Prefix Units
- quectosecond (qs) – 1 x 10-30 s
- rontosecond (rs) – 1 x 10-27 s
- yoctosecond (ys) – 1 x 10-24 s
- zeptosecond (zs) – 1 x 10-21 s
- attosecond (as) – 1 x 10-18 s
- femtosecond (fs) – 1 x 10-15 s
- picosecond (ps) – 1 x 10-12 s
- nanosecond (ns) – 0.000000001 s
- microsecond (µs) – 0.000001 s
- millisecond (ms) – 0.001 s
- centisecond (cs) – 0.01 s
- decisecond (ds) – 0.1 s
- second (s) – 1 s
- decasecond (das) – 10 s
- hectosecond (hs) – 100 s
- kilosecond (ks) – 1,000 s
- megasecond (Ms) – 1,000,000 s
- gigasecond (Gs) – 1,000,000,000 s
- terasecond (Ts) – 1 x 10+12 s
- petasecond (Ps) – 1 x 10+15 s
- exasecond (Es) – 1 x 10+18 s
- zettasecond (Zs) – 1 x 10+21 s
- yottasecond (Ys) – 1 x 10+24 s
- ronnasecond (Rs) – 1 x 10+27 s
- quettasecond (Qs) – 1 x 10+30 s