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 3.1 weeks into days we have to multiply 3.1 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

3.1 wk → T_(d)

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

T_(d) = 3.1 wk × 7 d

T_(d) = 21.7 d

The final result is:

3.1 wk → 21.7 d

We conclude that 3.1 weeks is equivalent to 21.7 days:

3.1 weeks = 21.7 days

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 day is equal to 0.046082949308756 × 3.1 weeks.

Another way is saying that 3.1 weeks is equal to 1 ÷ 0.046082949308756 days.

Approximate result

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

3.1 wk ≅ 21.7 d

An alternative is also that one day is approximately zero point zero four six times three point one 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