Time Converter | Duration Unit Calculator

How many seconds are in a day?

There are 86,400 seconds in a day: 60 seconds × 60 minutes × 24 hours = 86,400. A week has 604,800 seconds, and a non-leap year has 31,536,000 seconds (365 × 86,400). This figure is important in computing (Unix timestamps count seconds since January 1, 1970) and in determining day/night cycle lengths.

How many hours is 1 year?

A common (non-leap) year has 365 × 24 = 8,760 hours. A leap year has 8,784 hours. The average Julian year (accounting for leap years every 4 years) is 365.25 days = 8,766 hours. This figure is useful for electricity cost calculations (appliances rated in kW × 8,760 hours = annual kWh) and for expressing long durations.

How do you convert minutes to hours and minutes?

Divide the total minutes by 60. The quotient (whole number) is the hours, and the remainder is the remaining minutes. Example: 145 minutes ÷ 60 = 2 remainder 25, so 145 minutes = 2 hours 25 minutes. In decimal: 145 ÷ 60 = 2.4167 hours. Multiplying the decimal part (0.4167) by 60 gives back 25 minutes.

How many weeks are in a year?

A year has approximately 52.18 weeks (365.25 ÷ 7). In practice, a regular year has exactly 52 weeks and 1 day, and a leap year has 52 weeks and 2 days. This is why a date that falls on a Monday this year will fall on Tuesday next year (Wednesday after a leap year). Payroll systems typically count 52 weekly pay periods.

What is the difference between a millisecond, microsecond, and nanosecond?

1 millisecond (ms) = 0.001 seconds (1/1,000). 1 microsecond (μs) = 0.000001 seconds (1/1,000,000). 1 nanosecond (ns) = 0.000000001 seconds (1/1,000,000,000). Computer processors operate at nanosecond speeds — a 3.5 GHz CPU executes a clock cycle every 0.286 ns. Internet latency is measured in milliseconds; GPS signal timing requires nanosecond precision.