## Conversion formula

The conversion factor from hours to seconds is 3600, which means that 1 hour is equal to 3600 seconds:

1 hr = 3600 s

To convert 42 hours into seconds we have to multiply 42 by the conversion factor in order to get the time amount from hours to seconds. We can also form a simple proportion to calculate the result:

1 hr → 3600 s

42 hr → T(s)

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

T(s) = 42 hr × 3600 s

T(s) = 151200 s

The final result is:

42 hr → 151200 s

We conclude that 42 hours is equivalent to 151200 seconds:

42 hours = 151200 seconds

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 second is equal to 6.6137566137566E-6 × 42 hours.

Another way is saying that 42 hours is equal to 1 ÷ 6.6137566137566E-6 seconds.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty-two hours is approximately one hundred fifty-one thousand two hundred seconds:

42 hr ≅ 151200 s

An alternative is also that one second is approximately zero times forty-two hours.

## Conversion table

### hours to seconds chart

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

hours (hr) seconds (s)
43 hours 154800 seconds
44 hours 158400 seconds
45 hours 162000 seconds
46 hours 165600 seconds
47 hours 169200 seconds
48 hours 172800 seconds
49 hours 176400 seconds
50 hours 180000 seconds
51 hours 183600 seconds
52 hours 187200 seconds