Time Unit Converter
Just enter a value and pick a unit to instantly convert between nanoseconds, milliseconds, seconds, minutes, hours, days, weeks, months, years, and centuries. See every unit at once in a single table.
Last updated:
Input
Input unit
Hour（h）
Result
In seconds (s)
3,600s
| Unit | Symbol | Converted value |
|---|---|---|
| Nanosecond | ns | 3,600,000,000,000 |
| Microsecond | μs | 3,600,000,000 |
| Millisecond | ms | 3,600,000 |
| Second | s | 3,600 |
| Minute | min | 60 |
| Hour | h | 1 |
| Day | d | 0.041667 |
| Week | wk | 0.005952 |
| MonthApproximated as 1 month = 30 days (≈ 1/12 year) | mo | 0.001389 |
| Year1 year = 365 days (leap years not counted) | yr | 0.000114 |
| Century1 century = 100 years (at 365 days each) | c | 0.000001 |
How it works
- Supports tiny units such as nanoseconds (ns), microseconds (μs), milliseconds (ms), and seconds (s), up through minutes (min), hours (h), days (d), weeks (wk), months (mo), years (yr), and centuries (c).
- Conversions use the second (s) as the base unit with precise definitions: 1 minute = 60 seconds, 1 hour = 3600 seconds, and 1 day = 86400 seconds, so every pair of units converts correctly.
- Months (mo) are approximated as 1 month = 30 days. Real calendar months range from 28 to 31 days, so treat the result as a rough estimate.
- Years (yr) are calculated as 1 year = 365 days and do not account for leap years (366 days). A century (c) is treated as 100 years at 365 days each.
- Enter a value and choose the input unit to see conversions to every unit in a single table. Extremely large or small values are shown in exponential notation for readability.
- Numbers are formatted automatically, and the input unit's row is highlighted so you can compare the source and target values at a glance.
Frequently asked questions
- How does the time converter calculate results?
- It uses the second (s) as the base and exact definitions of 1 minute = 60 s, 1 hour = 3600 s, and 1 day = 86400 s. From nanoseconds up to centuries, every unit is converted through this base at once.
- How many days does the tool assume for a month and a year?
- A month is approximated as 30 days and a year as 365 days, with leap years (366 days) not counted. Since real calendar months range from 28 to 31 days, treat month and year conversions as rough estimates.
- How is a century handled?
- A century (c) is treated as 100 years at 365 days each, without leap days. Extremely large or small values are formatted in exponential notation for readability.
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