Time Units
Find the right formula and tools for all time units. We use official rules to make sure every calculation is correct.
All Time Unit Pairs
Pick a starting unit to see all possible conversion tools for time.
Seconds (s)
Milliseconds (ms)
- milliseconds to seconds
- milliseconds to microseconds
- milliseconds to nanoseconds
- milliseconds to minutes
- milliseconds to hours
- milliseconds to days
- milliseconds to weeks
- milliseconds to fortnights
- milliseconds to months
- milliseconds to years
- milliseconds to decades
- milliseconds to centuries
- milliseconds to millenniums
Microseconds (µs)
- microseconds to seconds
- microseconds to milliseconds
- microseconds to nanoseconds
- microseconds to minutes
- microseconds to hours
- microseconds to days
- microseconds to weeks
- microseconds to fortnights
- microseconds to months
- microseconds to years
- microseconds to decades
- microseconds to centuries
- microseconds to millenniums
Nanoseconds (ns)
Minutes (min)
Hours (h)
Days (d)
Weeks (week)
Fortnights
Months (mo)
Years (y)
Decades
Centuries
Millenniums
Our Standard Unit: Seconds (s)
We calculate all time units based on the standard Seconds (s). This helps us keep all our tools accurate and reliable.
Conversion Formulas
Below is the list of rules we use to calculate each time unit. You can use these to understand the math behind our tools.
Milliseconds (ms)
Formula: 1 Milliseconds = 0.001 Seconds
To do the math instantly, use our milliseconds to seconds or seconds to milliseconds tools.
Microseconds (µs)
Formula: 1 Microseconds = 0.000001 Seconds
To do the math instantly, use our microseconds to seconds or seconds to microseconds tools.
Nanoseconds (ns)
Formula: 1 Nanoseconds = 1e-9 Seconds
To do the math instantly, use our nanoseconds to seconds or seconds to nanoseconds tools.
Minutes (min)
Formula: 1 Minutes = 60 Seconds
To do the math instantly, use our minutes to seconds or seconds to minutes tools.
Hours (h)
Formula: 1 Hours = 3600 Seconds
To do the math instantly, use our hours to seconds or seconds to hours tools.
Days (d)
Formula: 1 Days = 86400 Seconds
To do the math instantly, use our days to seconds or seconds to days tools.
Weeks (week)
Formula: 1 Weeks = 604800 Seconds
To do the math instantly, use our weeks to seconds or seconds to weeks tools.
Fortnights
Formula: 1 Fortnights = 1209600 Seconds
To do the math instantly, use our fortnights to seconds or seconds to fortnights tools.
Months (mo)
Formula: 1 Months = 2629800 Seconds
To do the math instantly, use our months to seconds or seconds to months tools.
Years (y)
Formula: 1 Years = 31557600 Seconds
To do the math instantly, use our years to seconds or seconds to years tools.
Decades
Formula: 1 Decades = 315576000 Seconds
To do the math instantly, use our decades to seconds or seconds to decades tools.
Centuries
Formula: 1 Centuries = 3155760000 Seconds
To do the math instantly, use our centuries to seconds or seconds to centuries tools.
Millenniums
Formula: 1 Millenniums = 31557600000 Seconds
To do the math instantly, use our millenniums to seconds or seconds to millenniums tools.
All Systems
Compare these units against other measurement systems on our homepage.
All Unit Conversion Systems
Access our high-fidelity calculators for other measurement systems and engineering metrics.
- Length Unit Converters
- Weight & Mass Unit Converters
- Volume Unit Converters
- Temperature Unit Converters
- Area Unit Converters
- Pressure Unit Converters
- Energy Unit Converters
- Power Unit Converters
- Force Unit Converters
- Time Unit Converters
- Speed Unit Converters
- Angle Unit Converters
- Data Storage Unit Converters
- Volume - Dry Unit Converters
- Numbers Unit Converters