Time converter
Convert fixed elapsed durations from nanoseconds to weeks.
All time conversions
Choose your starting unit. Each direction has its own calculator, formula, and examples.
Convert Seconds
Convert Milliseconds
Convert Microseconds
Convert Nanoseconds
Convert Minutes
Convert Hours
Convert Fixed days
Convert Fixed weeks
Using time measurements
Days mean exactly 86400 seconds here. Calendar months and years vary and are deliberately excluded; this is not a date, time-zone, or leap-second calculator. Carry the same physical assumptions into subsequent physics calculations.