Question: how much data does an hour of skype use?
Answer: So on an average for a 1:1 call, Skype consumes around 700 MB per hour of video call. If you include both sides, it can come up to 1.5 GB. But if you are on a group call of say 7+ people, it can consume around 4 GB on one side. If you consider both send/receive communication, it can come up to 8 GB per hour.