Common Converters
Time Converter
Convert between seconds, minutes, hours, days, weeks, months and years. Calendar months and years vary, so this converter uses the Gregorian averages (1 year = 365.2425 days, 1 month = 1/12 year).
TIME CONVERTER — INSTANT RESULT
All supported units — time
| Unit | Symbol | To second (s) | From second (s) |
|---|---|---|---|
| Nanosecond | ns | 1 ns = 1e-09 s | 1 s = 999,999,999.99999988 ns |
| Microsecond | µs | 1 µs = 1e-06 s | 1 s = 1,000,000 µs |
| Millisecond | ms | 1 ms = 0.001 s | 1 s = 1,000 ms |
| Second | s | 1 s = 1 s | 1 s = 1 s |
| Minute | min | 1 min = 60 s | 1 s = 0.016666667 min |
| Hour | h | 1 h = 3,600 s | 1 s = 0.00027777778 h |
| Day | d | 1 d = 86,400 s | 1 s = 1.1574074e-05 d |
| Week | wk | 1 wk = 604,800 s | 1 s = 1.6534392e-06 wk |
| Fortnight | fn | 1 fn = 1,209,600 s | 1 s = 8.2671958e-07 fn |
| Month (average) | mo | 1 mo = 2,629,800 s | 1 s = 3.8025705e-07 mo |
| Year | yr | 1 yr = 31,557,600 s | 1 s = 3.1688088e-08 yr |
| Decade | dec | 1 dec = 315,576,000 s | 1 s = 3.16881e-09 dec |
| Century | c | 1 c = 3,155,760,000 s | 1 s = 3.16881e-10 c |
| Millennium | mill | 1 mill = 31,557,600,000 s | 1 s = 3.16881e-11 mill |
Popular time conversions
Frequently asked questions
What units does this time converter support?
It supports 14 units: Nanosecond (ns), Microsecond (µs), Millisecond (ms), Second (s), Minute (min), Hour (h), Day (d), Week (wk), Fortnight (fn), Month (average) (mo), Year (yr), Decade (dec), Century (c), Millennium (mill).
What is the base unit of time?
The SI reference unit is the second (s). Every conversion is computed by converting the input to the base unit, then from the base unit to the target unit, so chained precision is preserved.
Is this converter accurate?
Yes. Conversion factors use exact legal definitions where they exist (for example 1 in = 25.4 mm exactly) and CODATA/ISO constants otherwise. Results are shown to up to 10 significant figures.