## Conversion formula

The conversion factor from hours to weeks is 0.005952380952381, which means that 1 hour is equal to 0.005952380952381 weeks:

1 hr = 0.005952380952381 wk

To convert 21 hours into weeks we have to multiply 21 by the conversion factor in order to get the time amount from hours to weeks. We can also form a simple proportion to calculate the result:

1 hr → 0.005952380952381 wk

21 hr → T(wk)

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

T(wk) = 21 hr × 0.005952380952381 wk

T(wk) = 0.125 wk

The final result is:

21 hr → 0.125 wk

We conclude that 21 hours is equivalent to 0.125 weeks:

21 hours = 0.125 weeks

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 week is equal to 8 × 21 hours.

Another way is saying that 21 hours is equal to 1 ÷ 8 weeks.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one hours is approximately zero point one two five weeks:

21 hr ≅ 0.125 wk

An alternative is also that one week is approximately eight times twenty-one hours.

## Conversion table

### hours to weeks chart

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

hours (hr) weeks (wk)
22 hours 0.131 weeks
23 hours 0.137 weeks
24 hours 0.143 weeks
25 hours 0.149 weeks
26 hours 0.155 weeks
27 hours 0.161 weeks
28 hours 0.167 weeks
29 hours 0.173 weeks
30 hours 0.179 weeks
31 hours 0.185 weeks