## Conversion formula

The conversion factor from days to hours is 24, which means that 1 day is equal to 24 hours:

1 d = 24 hr

To convert 9 days into hours we have to multiply 9 by the conversion factor in order to get the time amount from days to hours. We can also form a simple proportion to calculate the result:

1 d → 24 hr

9 d → T(hr)

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

T(hr) = 9 d × 24 hr

T(hr) = 216 hr

The final result is:

9 d → 216 hr

We conclude that 9 days is equivalent to 216 hours:

9 days = 216 hours

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 hour is equal to 0.0046296296296296 × 9 days.

Another way is saying that 9 days is equal to 1 ÷ 0.0046296296296296 hours.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that nine days is approximately two hundred sixteen hours:

9 d ≅ 216 hr

An alternative is also that one hour is approximately zero point zero zero five times nine days.

## Conversion table

### days to hours chart

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

days (d) hours (hr)
10 days 240 hours
11 days 264 hours
12 days 288 hours
13 days 312 hours
14 days 336 hours
15 days 360 hours
16 days 384 hours
17 days 408 hours
18 days 432 hours
19 days 456 hours