Convert between milliseconds, seconds, minutes, hours, days, weeks, months, and years instantly.
This tool converts between eight time units by first converting the input to seconds (the SI base unit for time), then to the target unit. Months are defined as 30 days and years as 365 days for consistency. All conversions happen instantly as you type or change units.
| From | To | Factor |
|---|---|---|
| 1 Hour | Minutes | 60 |
| 1 Day | Hours | 24 |
| 1 Week | Days | 7 |
| 1 Month (30 d) | Hours | 720 |
| 1 Year (365 d) | Days | 365 |
| 1 Second | Milliseconds | 1,000 |
| 1 Year (365 d) | Hours | 8,760 |
Calendar months vary from 28 to 31 days, and years can be 365 or 366 days. For this converter, a month is standardized to exactly 30 days (2,592,000 seconds) and a year to exactly 365 days (31,536,000 seconds). These are widely used approximations for general-purpose time conversions. If you need calendar-specific precision, consider accounting for the actual month or leap year separately.