Instant · Precise · Universal
28 units available
6 categories total
To convert weeks to days: multiply by 7. To convert weeks to hours: multiply by 168.
1 wk = 7 d = 168 h = 10,080 min = 604,800 s. A year has about 52.18 weeks.
For example, 1 Week (wk) = 0.01912568306 Year (Leap) (yr (Leap)).
| Week (wk) | Year (Leap) (yr (Leap)) |
|---|---|
| 0.1 | 0.001912568306 |
| 0.5 | 0.00956284153 |
| 1 | 0.01912568306 |
| 2 | 0.03825136612 |
| 5 | 0.0956284153 |
| 10 | 0.1912568306 |
| 25 | 0.4781420765 |
| 50 | 0.956284153 |
| 100 | 1.912568306 |
| 500 | 9.56284153 |
| 1000 | 19.12568306 |
The week is a unit of time equal to 7 days, or 604,800 seconds.
1 wk = 7 d = 168 h = 10,080 min = 604,800 s. A year has about 52.18 weeks.
To convert weeks to days: multiply by 7. To convert weeks to hours: multiply by 168.
Pay periods (biweekly), pregnancy tracking (40 weeks), sprint cycles in agile development, and workout schedules.
The seven-day week has no astronomical basis — unlike days, months, and years, it's a purely human invention. It has been continuous for thousands of years.
Assuming months are exactly 4 weeks — most months are 4.3 weeks (30–31 days). Only February in non-leap years is exactly 4 weeks.
Days of the week in many languages reflect the seven celestial bodies: Sun-day, Moon-day, Saturn-day, etc.
A leap year is a calendar year containing 366 days (31,622,400 seconds), with an extra day added as February 29th to correct calendar drift.
1 leap year = 366 d = 8,784 h = 527,040 min = 31,622,400 s. That's 86,400 s more than a common year.
To convert leap years to days: multiply by 366. To seconds: multiply by 31,622,400.
Calendar systems, date arithmetic in software (handling Feb 29), birthday celebrations for 'leaplings,' and financial calculations.
People born on February 29 are called 'leaplings' — they technically have a birthday only once every 4 years. The odds of being born on Feb 29 are about 1 in 1,461.
The most common bug: not handling Feb 29. Many software failures have occurred on leap day. Also, the 100/400 rule is often forgotten.
Leap year test: divisible by 4? Yes → leap year, UNLESS divisible by 100, UNLESS also divisible by 400. Code it: (y%4==0 && y%100!=0) || y%400==0.



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