The per-activity numbers behind the calculator
Streaming: ~25 Mbps per 4K stream, ~8 Mbps per HD stream (music is a rounding error at ~1). Video calls: ~4 Mbps down and up each for solid HD. Online gaming: only ~3 Mbps down and ~1 up for gameplay itself — but game downloads will happily eat everything you have, which is why gamers still enjoy fast plans. Browsing and smart-home: a 5 Mbps baseline plus a couple of Mbps per active person covers it.
The calculator sums your busiest simultaneous moment, then adds 40% headroom — Wi-Fi overhead, background updates and evening congestion are real, and a plan sized to the exact peak feels tight in practice.
Rules of thumb by household
One person, streaming and working: 50–100 Mbps is comfortable. A couple with 4K TV and calls: 100–200. A family with several screens, consoles and cameras: 200–500. Gigabit is rarely necessary — it buys faster game downloads and future-proofing more than daily comfort.
Upload deserves its own glance: aim for at least 5 Mbps per simultaneous video call, and far more if you back up photos and video to the cloud. On cable and DSL, upload is the number most likely to disappoint — check the plan’s second figure before signing.
When more speed won’t help
If calls stutter or games lag while downloads run, the fix is rarely a bigger plan — it’s latency under load (bufferbloat), a property of your router’s queue management, not your bandwidth. Upgrading from 300 Mbps to gigabit doesn’t touch it; enabling Smart Queue Management does.
Run the full test on this site to see your bufferbloat grade before paying for a faster tier — it’s the cheapest upgrade decision you’ll make.
Common questions
Is 100 Mbps fast enough?
For most households, yes: it carries three or four HD streams or one 4K stream plus calls and browsing with room to spare. It gets tight with multiple 4K screens or constant huge downloads — that’s when 200–500 Mbps earns its price.
How many Mbps do I need for gaming?
Gameplay itself needs surprisingly little — around 3 Mbps down and 1 up. What gaming really needs is low, stable latency: under 50 ms ping with a good bufferbloat grade beats any bandwidth figure. Fast plans mainly shorten the 100 GB downloads.
How much speed do I need for streaming?
Per stream: ~5 Mbps for 1080p, ~25 Mbps for 4K with headroom. Count your simultaneous screens, not your total devices — a house full of idle phones streams nothing.
How much internet speed do I need to work from home?
Video calls dominate: ~4 Mbps down and up per call, plus your tools and cloud sync. 50–100 Mbps down with 10+ Mbps up covers most remote work comfortably — and a good bufferbloat grade matters more than either number for how meetings feel.
Is 500 Mbps or gigabit worth it?
If several people stream 4K, someone moves big files for work, or you refuse to wait for game downloads — maybe. For everyone else, the honest answer is that 200–300 Mbps with low latency is indistinguishable in daily use.