## 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 3.5 days into years we have to multiply 3.5 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

3.5 d → T(yr)

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

T(yr) = 3.5 d × 0.0027397260273973 yr

T(yr) = 0.0095890410958904 yr

The final result is:

3.5 d → 0.0095890410958904 yr

We conclude that 3.5 days is equivalent to 0.0095890410958904 years:

3.5 days = 0.0095890410958904 years

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 year is equal to 104.28571428571 × 3.5 days.

Another way is saying that 3.5 days is equal to 1 ÷ 104.28571428571 years.

## Approximate result

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

3.5 d ≅ 0.01 yr

An alternative is also that one year is approximately one hundred four point two eight six times three point five 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)
4.5 days 0.012 years
5.5 days 0.015 years
6.5 days 0.018 years
7.5 days 0.021 years
8.5 days 0.023 years
9.5 days 0.026 years
10.5 days 0.029 years
11.5 days 0.032 years
12.5 days 0.034 years
13.5 days 0.037 years