Time Converter
Free online time converter
Popular time conversions
About time units
Timekeeping uses SI seconds (s) and civil units like minutes, hours, days, weeks and years.
- Hour: 3,600 s.
- Leap year: adds one day roughly every 4 years.
Units in Time Converter
-
Day
(day)
Day = 24 hours (civil definition).
-
Hour (h)
(h)
Hour = 60 minutes = 3,600 seconds.
-
Minute (min)
(min)
Minute = 60 seconds.
-
Second (s)
(s)
Second is the SI base unit of time, defined via cesium-133 oscillations.
-
Week
(week)
Week = 7 days, globally used.
-
Year (365 d)
(year)
Common time unit used in science, engineering, and daily life.
Quick examples
FAQ
Is time conversion exact?
Many conversions are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Can I share a specific result?
Yes. Every converter has a clean, shareable URL like
/convert/meter-to-foot/2.5.