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Time Converter
Convert time between seconds, minutes, hours, and days instantly. Perfect for calculating durations, time zones, and project planning.
Understanding Time Conversions
Time is relative—literally and figuratively. Whether you're calculating project deadlines, converting time zones, or just curious how many seconds you've been alive, understanding time units is essential.
Common Time Conversions
- 1 Minute = 60 seconds
- 1 Hour = 60 minutes = 3,600 seconds
- 1 Day = 24 hours = 1,440 minutes = 86,400 seconds
- 1 Week = 7 days = 168 hours = 10,080 minutes = 604,800 seconds
- 1 Year = 365 days = 8,760 hours = 525,600 minutes = 31,536,000 seconds
💡 Fun Fact
The definition of a second has changed throughout history. Originally 1/86,400 of a solar day, it's now defined by atomic clocks: 9,192,631,770 oscillations of a cesium-133 atom. This precision is why GPS satellites can pinpoint your location to within meters.
⚠️ Common Mistake: AM/PM Confusion
12:00 AM is midnight (start of the day). 12:00 PM is noon (midday). Many people get this backwards! If you're converting times, double-check midnight/noon conversions.
Practical Applications
Project Management: Convert task durations from hours to days to plan sprints effectively. A 40-hour task = 5 workdays (at 8 hours/day).
Fitness Tracking: Convert workout time. 90-minute run = 1.5 hours = 5,400 seconds of cardio.
Age Calculation: You've been alive for about 31,536,000 seconds per year. At 30 years old, that's over 946 million seconds!
Reviewed by Dr. Alex M.
Ph.D. in Applied Mathematics
Expert in measurement systems and unit conversions.
Frequently Asked Questions
How many seconds are in a day?
There are 86,400 seconds in a day. This is calculated as: 24 hours × 60 minutes × 60 seconds = 86,400 seconds. This applies to a standard calendar day.
How do you convert hours to minutes?
To convert hours to minutes, multiply the number of hours by 60. For example: 2 hours = 2 × 60 = 120 minutes. This is because there are 60 minutes in one hour.
What is the difference between a calendar day and a sidereal day?
A calendar day is 24 hours (86,400 seconds), which is the time it takes for Earth to complete one rotation relative to the Sun. A sidereal day is 23 hours, 56 minutes, and 4 seconds (86,164 seconds), which is Earth's rotation relative to distant stars. The 4-minute difference accumulates over a year.