Conversion from Year (yr) to Week (weeks) and vice versa

Updated on by Stefan Banse

Here you can convert the Time unit Year into the unit Week and vice versa you can convert Week into Year. By clicking the "Swap units" icon, you will always obtain the desired conversion in the calculation result, i.e., yr to weeks or weeks to yr. With the following calculator you can also calculate any other Time unit.

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Info about "Year"

A year (a) (Latin: annus) forms the time span of 365 days, or in the case of a leap year, 366 consecutive days. Due to its varying length, the year is not a physical unit of time and thus not a unit of time in the international SI system of units.

In the time unit converter, a year is always calculated to be 365 days.

In astronomical terms, a year is defined as the duration of the Earth’s orbit around the Sun, which lasts 365.25 days on average. Due to the quarter of a day, a normal calendar year (common year) is defined as 365 days, which is replaced every four years by a leap year with 366 days.

In everyday life, the term "year" is understood to mean the period from 1st January to 31st December.

Info about "Week"

In today’s culture, the “week” is a common unit of time comprising seven days. However, it is neither a legal unit nor a physical unit of time in terms of the International System of Units(SI), compared to seconds, minutes or hours.

Here, 1 week is equivalent to 7 days, 1 day is therefore equal to 0.14286 weeks.

Historically, the combination of seven days into a unit of one week can be traced back to the length of one moon. The entire phase from full moon to another full moon lasts slightly longer than 28 days. This is divided into four lunar phases (full moon - waning crescent - new moon - waxing crescent - full moon), which suggests the division of the 28 days into four weeks of seven days each.

Basis for conversion Year (yr) to Week (weeks) and vice versa

The abbreviation for the "Time unit Year" is yr. The abbreviation for the "Time unit Week" is weeks.

Formula for the conversion of Year (yr) to Week (weeks) and vice versa

The calculation from Year to Week shall be made using the following conversion formula:

 Conversion formula Year to Week 

Determine the number of Week from Year

Year × 52.142857102311


Formula for the conversion of Week (weeks) to Year (yr)

The calculation from Week to Year shall be made using the following conversion formula:

 Conversion formula Week to Year 

Determine the number of Year from Week

Week × 0.019178082206694


Overview table: How many Year are how many Week?

Year yr ⇒ Week weeks
0.01 yr  are  0.52142 weeks
0.02 yr  are  1.04285 weeks
0.03 yr  are  1.56428 weeks
0.04 yr  are  2.08571 weeks
0.05 yr  are  2.60714 weeks
0.06 yr  are  3.12857 weeks
0.07 yr  are  3.65000 weeks
0.08 yr  are  4.17142 weeks
0.09 yr  are  4.69285 weeks
0.10 yr  are  5.21428 weeks
0.20 yr  are  10.42857 weeks
0.30 yr  are  15.64285 weeks
0.40 yr  are  20.85714 weeks
0.50 yr  are  26.07142 weeks
0.60 yr  are  31.28571 weeks
0.70 yr  are  36.50000 weeks
0.80 yr  are  41.71428 weeks
0.90 yr  are  46.92857 weeks
1 yr  corresponds to  52.14285 weeks
2 yr  are  104.28571 weeks
3 yr  are  156.42857 weeks
4 yr  are  208.57142 weeks
5 yr  are  260.71428 weeks
6 yr  are  312.85714 weeks
7 yr  are  365 weeks
8 yr  are  417.14285 weeks
9 yr  are  469.28571 weeks
10 yr  are  521.42857 weeks
20 yr  are  1 042.85714 weeks
30 yr  are  1 564.28571 weeks
40 yr  are  2 085.71428 weeks
50 yr  are  2 607.14285 weeks
60 yr  are  3 128.57142 weeks
70 yr  are  3 649.99999 weeks
80 yr  are  4 171.42856 weeks
90 yr  are  4 692.85713 weeks
100 yr  are  5 214.28571 weeks
200 yr  are  10 428.57142 weeks
300 yr  are  15 642.85713 weeks
400 yr  are  20 857.14284 weeks
500 yr  are  26 071.42855 weeks
600 yr  are  31 285.71426 weeks
700 yr  are  36 499.99997 weeks
800 yr  are  41 714.28568 weeks
900 yr  are  46 928.57139 weeks
1 000 yr  are  52 142.85710 weeks

Overview table: How many Week are how many Year?

Week weeks ⇒ Year yr
0.01 weeks  are  0.00019 yr
0.02 weeks  are  0.00038 yr
0.03 weeks  are  0.00057 yr
0.04 weeks  are  0.00076 yr
0.05 weeks  are  0.00095 yr
0.06 weeks  are  0.00115 yr
0.07 weeks  are  0.00134 yr
0.08 weeks  are  0.00153 yr
0.09 weeks  are  0.00172 yr
0.10 weeks  are  0.00191 yr
0.20 weeks  are  0.00383 yr
0.30 weeks  are  0.00575 yr
0.40 weeks  are  0.00767 yr
0.50 weeks  are  0.00958 yr
0.60 weeks  are  0.01150 yr
0.70 weeks  are  0.01342 yr
0.80 weeks  are  0.01534 yr
0.90 weeks  are  0.01726 yr
1 weeks  corresponds to  0.01917 yr
2 weeks  are  0.03835 yr
3 weeks  are  0.05753 yr
4 weeks  are  0.07671 yr
5 weeks  are  0.09589 yr
6 weeks  are  0.11506 yr
7 weeks  are  0.13424 yr
8 weeks  are  0.15342 yr
9 weeks  are  0.17260 yr
10 weeks  are  0.19178 yr
20 weeks  are  0.38356 yr
30 weeks  are  0.57534 yr
40 weeks  are  0.76712 yr
50 weeks  are  0.95890 yr
60 weeks  are  1.15068 yr
70 weeks  are  1.34246 yr
80 weeks  are  1.53424 yr
90 weeks  are  1.72602 yr
100 weeks  are  1.91780 yr
200 weeks  are  3.83561 yr
300 weeks  are  5.75342 yr
400 weeks  are  7.67123 yr
500 weeks  are  9.58904 yr
600 weeks  are  11.50684 yr
700 weeks  are  13.42465 yr
800 weeks  are  15.34246 yr
900 weeks  are  17.26027 yr
1 000 weeks  are  19.17808 yr

Source information

As source for the information in the "Time units" category, we have used in particular:

Last update on November 4, 2021

The pages of the "Time units" category were last editorially reviewed by Stefan Banse on November 4, 2021. They all correspond to the current status.

Previous changes on April 24, 2021

  • April 24, 2021: Publication of the time units converter.
  • Editorial revision of all texts in this category