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

Updated on by Stefan Banse

Here you can convert the Unit of time 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 Unit of time.

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Info about "Year"

A year (a) (Latin: annus) forms the time span of 365, 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 with 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 a quarter of a day more than 365 days, 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 1 January to 31 December.

Info about "Week"

Today, the week is a common unit of time of seven days in almost all cultures. However, it is neither a legal unit nor a physical unit of time in the sense of the international SI system of units, as seconds, minutes or hours are.

Here, 1 week is equal 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 full moon again 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)

The abbreviation for the "Unit of time Year" is yr. The abbreviation for the "Unit of time Week" is weeks.

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

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

Overview table: How many Week are how many Year?

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

Source information

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

Last update on April 24, 2021

The last changes in the "Time units" category were implemented by Stefan Banse on April 24, 2021. The main changes were:

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