Convert time units — seconds, minutes, hours, days, weeks, months, years.
| Unit | Name | Value |
|---|---|---|
| ms | Millisecond | 604800000 |
| s | Second | 604800 |
| min | Minute | 10080 |
| hr | Hour | 168 |
| d | Day | 7 |
| mo | Month (30d) | 0.23333333 |
| yr | Year | 0.019178082 |
Formula: Month = Week × 0.23
Multiply any week value by 0.23 to get month.
Reverse: Week = Month × 4.348
Common week values — factor: 1 wk = 0.23 mo
| Week (wk) | Month (mo) | Context |
|---|---|---|
| 1 wk | 0.23 mo | One week |
| 2 wk | 0.46 mo | Two weeks |
| 4 wk | 0.9199 mo | One month |
| 8 wk | 1.84 mo | Two months |
| 13 wk | 2.99 mo | One quarter |
| 26 wk | 5.979 mo | Half year |
| 52 wk | 11.96 mo | One year |
| 104 wk | 23.92 mo | Two years |
| 260 wk | 59.79 mo | 5 years |
| 520 wk | 119.6 mo | One decade |
| 1,040 wk | 239.2 mo | 20 years |
| 2,600 wk | 597.9 mo | 50 years |
| 5,200 wk | 1,196 mo | One century |
| 1.04e+04 wk | 2,392 mo | 200 years |
| 5.2e+04 wk | 1.196e+04 mo | One millennium |
1 wk = 0.23 mo. Memorize for instant estimates.
Use 0.23 as a quick mental multiplier.
Multiply result by 4.348 to verify the original wk value.
Plans two-week sprint cycles and tracks velocity in story points per week.
Structures the academic year into teaching weeks and holiday blocks.
Prescribes treatment durations and follow-up schedules in weeks.
Designs weekly workout plans and measures fitness progress week by week.
Works to weekly publication deadlines and measures subscription periods in weeks.
Tracks notice periods, probation periods, and holiday entitlements in weeks.
The 7-day week has no astronomical basis — unlike the day, month, or year. Its origin is traced to Babylonian astronomy (assigning planets to days) and Jewish tradition (the biblical 7-day creation), later adopted by Rome and spread globally.
The week is the standard unit for work schedules, academic timetables, and business cycles across virtually every culture. The ISO 8601 standard defines Monday as the first day of the week.
Interesting fact: The French Revolutionary Calendar (1793–1805) attempted a 10-day week (décade). It was deeply unpopular and abandoned within 12 years.
The month originated with the lunar cycle (~29.5 days), used by ancient Mesopotamian, Egyptian, and Chinese calendars. The Gregorian calendar months (28–31 days) are a solar compromise that drifts from the lunar cycle.
Months define billing cycles, salary periods, pregnancy tracking, and seasonal planning. The average Gregorian month is 30.437 days; this conversion uses 30.44 days (2,629,800 seconds) as the standard average.
Interesting fact: The word 'month' derives from 'moon' in Germanic languages. Islam and the Hebrew calendar still use lunar months, which is why Ramadan and Passover shift relative to the Gregorian calendar each year.
Converting week to month is a common task across science, engineering, and everyday planning. The time scale spans from nanoseconds in computing to centuries in history, and having accurate conversions helps when comparing measurements across different systems or disciplines.
As a quick reference: 5 wk = 1.15 mo and 10 wk = 2.3 mo. For the reverse: 1 mo = 4.348 wk. The exact conversion factor is 1 wk = 0.23 mo.
All conversions are performed in IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.