## Conversion formula

The conversion factor from days to years is 0.0027397260273973, which means that 1 day is equal to 0.0027397260273973 years:

1 d = 0.0027397260273973 yr

To convert 9 days into years we have to multiply 9 by the conversion factor in order to get the time amount from days to years. We can also form a simple proportion to calculate the result:

1 d → 0.0027397260273973 yr

9 d → T(yr)

Solve the above proportion to obtain the time T in years:

T(yr) = 9 d × 0.0027397260273973 yr

T(yr) = 0.024657534246575 yr

The final result is:

9 d → 0.024657534246575 yr

We conclude that 9 days is equivalent to 0.024657534246575 years:

9 days = 0.024657534246575 years

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 year is equal to 40.555555555556 × 9 days.

Another way is saying that 9 days is equal to 1 ÷ 40.555555555556 years.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that nine days is approximately zero point zero two five years:

9 d ≅ 0.025 yr

An alternative is also that one year is approximately forty point five five six times nine days.

## Conversion table

### days to years chart

For quick reference purposes, below is the conversion table you can use to convert from days to years

days (d) years (yr)
10 days 0.027 years
11 days 0.03 years
12 days 0.033 years
13 days 0.036 years
14 days 0.038 years
15 days 0.041 years
16 days 0.044 years
17 days 0.047 years
18 days 0.049 years
19 days 0.052 years