How many hours would it take to watch all of Dragon Ball?

Assuming for a 24 minute run length, it's about 230 hours, or 9 days, 6 hours.

How many hours is Dragon Ball Z?

So, Dragon Ball Z, all the way through, lasts about 6,984 minutes, give or take. This is approximately 116.4 hours. There are around 24 hours in a full day, so, if you were to watch the whole series non-stop, it would take approximately 4.85 full days. There are 291 episodes of Dragon Ball Z.