UnitConTime
Time conversion is useful in daily planning, project work, science, and education. Seconds, minutes, hours, days, and weeks convert exactly, but months and years are usually treated as averages in general-purpose converters. This page uses standard average values for longer periods so users can compare durations consistently. It is helpful for schedules, runtime calculations, and broad time estimates.
Common conversions
| From | To |
|---|---|
| 1 Hour | 3,600 Second |
| 1 Day | 24 Hour |
| 1 Year | 365.25 Day |
| 1 Week | 168 Hour |
| 1 Year | 31,557,600 Second |
| 1 Decade | 10 Year |
| 1 Minute | 60,000 Millisecond |
| 30 Day | 720 Hour |
Frequently asked questions
One day contains 86,400 seconds. That comes from 24 hours times 60 minutes times 60 seconds.
A common year has 365 days, while an average civil year is often treated as 365.25 days to account for leap years. The converter uses average values where appropriate.
A 365-day year contains 31,536,000 seconds. If leap years are averaged in, the number is slightly larger.
Multiply hours by 60 to get minutes. For example, 2.5 hours equals 150 minutes.
Months do not all contain the same number of days. General converters therefore use an average month length rather than a calendar-specific value.