## Conversion formula

The conversion factor from days to weeks is 0.14285714285714, which means that 1 day is equal to 0.14285714285714 weeks:

1 d = 0.14285714285714 wk

To convert 3.5 days into weeks we have to multiply 3.5 by the conversion factor in order to get the time amount from days to weeks. We can also form a simple proportion to calculate the result:

1 d → 0.14285714285714 wk

3.5 d → T(wk)

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

T(wk) = 3.5 d × 0.14285714285714 wk

T(wk) = 0.5 wk

The final result is:

3.5 d → 0.5 wk

We conclude that 3.5 days is equivalent to 0.5 weeks:

3.5 days = 0.5 weeks

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 week is equal to 2 × 3.5 days.

Another way is saying that 3.5 days is equal to 1 ÷ 2 weeks.

## 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 five weeks:

3.5 d ≅ 0.5 wk

An alternative is also that one week is approximately two times three point five days.

## Conversion table

### days to weeks chart

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

days (d) weeks (wk)
4.5 days 0.643 weeks
5.5 days 0.786 weeks
6.5 days 0.929 weeks
7.5 days 1.071 weeks
8.5 days 1.214 weeks
9.5 days 1.357 weeks
10.5 days 1.5 weeks
11.5 days 1.643 weeks
12.5 days 1.786 weeks
13.5 days 1.929 weeks