Mobile data usage calculator

Plan maths runs in decimal GB because carriers bill that way, and the GiB row converts so it can be read against your phone's settings screen, which counts binary units. The rate figures carry their basis: Netflix and Zoom publish theirs, the music figure is derived from Spotify's 320 kbps bitrate, and the rest are working assumptions you should tune against a month of real usage from your carrier's app. Downloads and system updates are not modeled at all; they can dwarf a week of streaming.