Time Converter
Convert seconds, minutes, hours, days, weeks, years and more.
About Time Units
The second (s) is the SI base unit, defined since 1967 by the oscillations of a caesium-133 atom (9,192,631,770 cycles). A "month" and "year" are approximate in this converter (30.44 days/month, 365.25 days/year including leap years). For project planning, remember that calendar months vary from 28 to 31 days.
Common Conversions
- 1 minute = 60 seconds
- 1 hour = 3,600 seconds
- 1 day = 86,400 seconds
- 1 week = 604,800 seconds
- 1 year ≈ 31,557,600 seconds
- 1 decade = 10 years
Fun Time Facts
- Light travels ~30 cm in 1 nanosecond
- Human blink ≈ 150–400 milliseconds
- Age 30 = roughly 946 million seconds
- 1 million seconds ≈ 11.6 days
- 1 billion seconds ≈ 31.7 years