Conversion formula

The conversion factor from weeks to days is 7, which means that 1 week is equal to 7 days:

1 wk = 7 d

To convert 13 weeks into days we have to multiply 13 by the conversion factor in order to get the time amount from weeks to days. We can also form a simple proportion to calculate the result:

1 wk → 7 d

13 wk → T_(d)

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

T_(d) = 13 wk × 7 d

T_(d) = 91 d

The final result is:

13 wk → 91 d

We conclude that 13 weeks is equivalent to 91 days:

13 weeks = 91 days

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 day is equal to 0.010989010989011 × 13 weeks.

Another way is saying that 13 weeks is equal to 1 ÷ 0.010989010989011 days.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that thirteen weeks is approximately ninety-one days:

13 wk ≅ 91 d

An alternative is also that one day is approximately zero point zero one one times thirteen weeks.

Conversion table

weeks to days chart

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