Convert between seconds, minutes, hours, days, weeks, months, years, and other time units with scientific precision.
The SI unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the cesium-133 atom transition. The second is the foundation for all other time measurements.
Common uses: Scientific measurements, physics calculations, everyday timing, computer processing.
A unit of time equal to 60 seconds. 1 minute = 60 seconds. Widely used for everyday time measurement and digital displays.
Common uses: Cooking times, workout duration, meeting schedules, travel time estimates.
A unit of time equal to 60 minutes or 3,600 seconds. 1 hour = 60 minutes = 3,600 seconds.
Common uses: Working hours, travel duration, sleep requirements, billing periods.
A unit of time equal to 24 hours or 86,400 seconds. One day represents one complete rotation of Earth on its axis.
Common uses: Calendar dates, project timelines, medication schedules, weather forecasting.
A unit of time equal to 7 days. 1 week = 7 days = 604,800 seconds. Widely used in scheduling and calendars worldwide.
Common uses: Work schedules, event planning, project timelines, grocery shopping cycles.
A unit of time approximately equal to 1/12th of a year. Average month = ~30.44 days. Varies based on calendar system (lunar, solar, or hybrid).
Note: Calendar months range from 28-31 days. Conversions typically use average month length.
A unit of time equal to Earth's orbital period around the Sun, approximately 365.24 days. 1 year ≈ 365.24 days = 31,536,000 seconds.
Types: Julian, Leap, Tropical, and Sidereal years have slightly different definitions for precision calculations.
Millisecond (ms): 1/1000 of a second, commonly used in computing and reaction time measurements.
Microsecond (µs): 1/1,000,000 of a second, used in electronics and high-speed physics.
Nanosecond (ns): 1/1,000,000,000 of a second, used in quantum physics and computer processors.
Picosecond (ps): 1/1,000,000,000,000 of a second, used in laser research and molecular dynamics.
Decade: 10 years - used in climate studies and long-term planning.
Century: 100 years - used in historical contexts and long-term societal changes.
Millennium: 1,000 years - used for geological time scales and epoch markers.
Planck Time: 5.39 × 10⁻⁴⁴ seconds - the smallest meaningful unit of time in physics.