Milliseconds to Weeks (ms to wk)
1 millisecond equals 1.653439153×10⁻⁹ weeks (rounded).
How to convert milliseconds to weeks
To convert milliseconds to weeks, multiply the number of milliseconds by 1.653439153×10⁻⁹. The factor is rounded to 10 significant digits. To go the other way, multiply weeks by 604,800,000.
weeks = milliseconds × 1.653439153×10⁻⁹
Example: 10 milliseconds = 1.653439153×10⁻⁸ weeks.
Months and years are not constant. This site uses the average Gregorian year of 365.2425 days, so one 'year' converts to 365.2425 days, not 365; use 'common year' for exactly 365 days.
About these units
Millisecond (ms)
One thousandth of a second. Used for computer response times and sports timing.
Milliseconds sit on the border between what people perceive and what instruments must be built to catch. Nobody feels a single one: a human blink lasts roughly 100 to 400 of them, and the average resting heart cycle is about 860. The prefix milli- makes the unit exactly one thousandth of a second, so it is a handy yardstick for events a little too quick to notice but slow enough for a stopwatch-style instrument to capture.
A millisecond is one thousandth of a second, and the scale references are easy to picture. Light in a vacuum covers about 300 km in 1 ms, and sound in air covers about 34 cm. A film frame at 24 frames per second lasts about 41.7 ms, one cycle of 60 Hz mains power lasts about 16.7 ms, and a camera shutter set to 1/125 s is open for about 8 ms. Online gamers watch network latency in milliseconds, with typical broadband figures of 5 to 80 ms, and telephone engineers recommend keeping one-way delay under about 150 ms before conversation starts to feel awkward.
1 millisecond = 0.001 seconds (exactly).
Sources: Wikipedia: Millisecond; BIPM: SI Brochure, 9th edition
Week (wk)
Seven days. The seven-day week comes from the ancient Near East and is nearly universal in the modern calendar.
Nothing in the sky produces a seven-day cycle, which makes the week a human invention with a contested pedigree. Babylonians marked the 7th, 14th, 21st and 28th of the lunar month as special, but that was not a continuous cycle. A continuous seven-day cycle tied to the Sabbath is attested in Judaism by the 6th century BC at the latest, and scholars disagree on whether it was borrowed from Babylon or developed independently. The Romans later used a week named for the Sun, the Moon and the five visible planets, and in AD 321 Emperor Constantine decreed it across the empire.
A week is seven days, or 604,800 seconds, and it divides evenly into neither months nor years, which is why calendars shift against it. The ISO 8601 standard starts each week on Monday and assigns week 1 to the week containing the year's first Thursday, so some years have a week 53. Other societies used different lengths: Rome had an eight-day market cycle, and revolutionary France used a ten-day week from 1793 to 1802. The English word comes from Old English wice, meaning a turn or succession.
1 week = 604,800 seconds (exactly).
Sources: Wikipedia: Week; Wikipedia: ISO week date
Related conversions
- Weeks to milliseconds (reverse)
- Milliseconds to seconds
- Milliseconds to minutes
- Milliseconds to hours
- Milliseconds to days
- Milliseconds to months
- Milliseconds to years
- Milliseconds to microseconds
- Milliseconds to nanoseconds
- Milliseconds to decades
- Milliseconds to centuries
- Milliseconds to millennia
- Seconds to weeks
- Minutes to weeks
- Hours to weeks
- Days to weeks
- Months to weeks
- Years to weeks
- Microseconds to weeks
- Nanoseconds to weeks
- Decades to weeks
- Centuries to weeks
- Millennia to weeks
- Picoseconds to weeks
See all time units.