Time Converter
Convert durations from nanoseconds to centuries. Useful for machine cycle times, shift planning and project schedules.
Time Converter
Convert between 13 time units.
1 Hour = 60 Minute
1 h equals
60 min
In every unit
Time units in practice
Machine run hours, cycle times and maintenance intervals are often given in different units. A spindle rated for 20,000 hours between services is about 2.3 years of continuous running, or roughly 7 years on one 8 hour shift.
Months and years have different lengths, so this converter uses averages: a year of 365.2425 days (the Gregorian average) and a month of one twelfth of that, about 30.44 days.
Time unit reference
| Unit | Symbol | In seconds |
|---|---|---|
| Second | s | 1 s |
| Millisecond | ms | 0.001 s |
| Microsecond | µs | 0.000001 s |
| Nanosecond | ns | 1 × 10⁻⁹ s |
| Picosecond | ps | 1 × 10⁻¹² s |
| Minute | min | 60 s |
| Hour | h | 3,600 s |
| Day | d | 86,400 s |
| Week | wk | 604,800 s |
| Month (average) | mo | 2,629,746 s |
| Year (average) | yr | 31,556,952 s |
| Decade | dec | 315,569,520 s |
| Century | c | 3,155,695,200 s |
Frequently asked questions
How many seconds are in a day?
86,400 seconds: 24 hours × 60 minutes × 60 seconds.
How many hours are in a year?
8,760 hours in a 365 day year and 8,784 in a leap year. The average Gregorian year is about 8,765.8 hours.
How many weeks are in a year?
52 weeks and 1 day, or 52 weeks and 2 days in a leap year.
Why is a month shown as 30.44 days?
Months run from 28 to 31 days, so the converter uses the average month of 365.2425 / 12 days.