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Time Converter: Convert Between Seconds, Minutes, Hours, Days & More
A Time Converter helps you quickly convert between different units of time — from seconds and minutes to hours, days, weeks, months, years, and even decades and centuries. Whether you're calculating project timelines, planning schedules, or just curious about how many hours are in a year, this tool gives you instant answers.
This converter handles 9 different time units using standard conversion factors, with precise handling of months (30.44 days average) and years (365.25 days average to account for leap years).
Time Conversion Formulas
Note: Months use an average of 30.44 days per month (365.25 ÷ 12). Years use 365.25 days to account for leap years. For precise calendar calculations, consider the specific months and years involved.
How to Use This Time Converter
- 1Enter your value — the number you want to convert.
- 2Select "From" unit — choose the time unit you're converting from (seconds, minutes, hours, etc.).
- 3Select "To" unit — choose the target time unit.
- 4Adjust decimal places — control the precision of your result.
- 5Read the result — instant conversion with explanation and quick reference.
Worked Example
How many hours are in 1 week?
Time Unit Comparison Table
| Unit | Seconds | Minutes | Hours | Days |
|---|---|---|---|---|
| 1 Minute | 60 | 1 | 0.0167 | 0.000694 |
| 1 Hour | 3,600 | 60 | 1 | 0.04167 |
| 1 Day | 86,400 | 1,440 | 24 | 1 |
| 1 Week | 604,800 | 10,080 | 168 | 7 |
| 1 Month (avg) | 2,629,800 | 43,830 | 730.5 | 30.44 |
| 1 Year (avg) | 31,557,600 | 525,960 | 8,766 | 365.25 |
| 1 Decade | 315,576,000 | 5,259,600 | 87,660 | 3,652.5 |
| 1 Century | 3,155,760,000 | 52,596,000 | 876,600 | 36,525 |
When to Use This Time Converter
Convert task durations between hours, days, and weeks for planning.
Convert workout times from minutes to hours or seconds.
Calculate layover times, flight durations, and travel schedules.
Track study hours and convert to total time invested.
Convert worked hours to decimal for payroll and invoicing.
Convert age from years to days, hours, or minutes.
Frequently Asked Questions
There are 8,760 hours in a common year (365 days) and 8,784 hours in a leap year (366 days). Using the average year of 365.25 days (accounting for leap years), there are 8,766 hours per year on average. This converter uses the 365.25-day average for years to give more accurate long-term conversions.
There are 86,400 seconds in a day (24 hours × 60 minutes × 60 seconds). This is the standard conversion used for all day-based calculations in this converter.
Months have varying lengths (28, 29, 30, or 31 days). For conversion purposes, the average month length is calculated as 365.25 days ÷ 12 months = 30.4375 days (rounded to 30.44). This provides a consistent average for approximate conversions. For exact calendar calculations (e.g., from a specific start date), use a date calculator instead.
To convert minutes to hours, divide the number of minutes by 60. For example, 150 minutes ÷ 60 = 2.5 hours. To convert hours to minutes, multiply by 60. This converter handles both directions automatically.
A solar year (tropical year) is the time Earth takes to orbit the Sun — approximately 365.242189 days. A calendar year is either 365 days (common year) or 366 days (leap year). This converter uses 365.25 days as the average, which is accurate enough for most practical purposes. For astronomical calculations, more precise values may be needed.
This version focuses on common time units from seconds to centuries. For milliseconds (1/1,000 second), microseconds (1/1,000,000 second), or nanoseconds (1/1,000,000,000 second), you can convert by multiplying: 1 second = 1,000 milliseconds = 1,000,000 microseconds = 1,000,000,000 nanoseconds. Enter your value in seconds and adjust accordingly.