What is Bandwidth?

Bandwidth is how much data your connection can move per second, measured in megabits (Mbps). It's the "speed" on your broadband plan — 100 Mbps moves a gigabyte in about 80 seconds.

Streaming HD needs ~5 Mbps and 4K ~15–25 Mbps per stream; video calls 3–5 Mbps. Households mostly notice bandwidth limits when several heavy users overlap at once.