Time Unit Converter
Convert a duration between time units — milliseconds, seconds, minutes, hours, days, weeks, months, and years.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter an amount and choose a from/to unit to convert between time units like seconds, minutes, hours, and days.
Your result
1
Converted value
AI explanation
Formula
Converted value = amount × (from-unit-to-seconds factor) ÷ (to-unit-to-seconds factor)Worked example
24 hours to days
| Field | Value |
|---|---|
| Amount | 24 |
| From unit | hr |
| To unit | day |
| Converted value | 1 |
Assumptions
- Months and years use calendar-average lengths (a year = 365.25 days, a month = that ÷ 12), since actual calendar months and years vary in length.
Frequently asked questions
Why is "month" an average rather than an exact value?
Calendar months vary from 28 to 31 days, so there's no single exact conversion — this calculator uses the average Gregorian month length (about 30.44 days) for consistency.
How many seconds are in a year?
Using the average (365.25-day) year convention, 1 year = 31,557,600 seconds.
Is this the same as the Age Calculator?
No — the Age Calculator finds the exact elapsed time between two real calendar dates (accounting for actual month lengths and leap years). This calculator converts a duration between time units using average lengths.