Instantly convert between all major time units. Enter any value and watch the entire calculator update in real-time with precision.
This calculator works by establishing a single, consistent base unit: the second. When you enter a number into any field, the tool first converts that value into its equivalent in seconds. From that base value, it then calculates the equivalent for all other time units and updates their fields.
Months are tricky! Their length varies from 28 to 31 days. To provide a consistent value for conversions, this calculator uses an average month length of 30.44 days.
This value is a widely used standard and is derived from the average Gregorian year: 365.2425 days divided by 12 months.
The Earth takes approximately 365.2425 days to orbit the Sun. To account for this, the Gregorian calendar adds an extra day (February 29th) in “leap years.”
You can use the toggle switch under the calculator to select between: