Start with simultaneous activity, not device count
Speed is consumed by what is actively streaming or uploading, not by how many gadgets are on the Wi-Fi. A smart bulb uses almost nothing; one 4K stream uses about 25 Mbps.
- HD video call: 4 Mbps
- HD stream: 8 Mbps
- 4K stream: 25 Mbps
- Cloud backup or large upload: 20–50 Mbps of upload
A simple sizing rule
Add up your two busiest simultaneous activities, double the total for headroom, and round up to the nearest tier. Most families land between 300 and 500 Mbps.
Upload speed is the hidden variable
If anyone in the home works remotely, streams to Twitch, or backs up photos, upload speed matters more than the download number on the ad. That is where fiber earns its premium.
Frequently asked
Do I need gigabit?
Only if you routinely move very large files or run a busy multi-user household. Most homes are well served at 300–500 Mbps.
Will more speed fix buffering?
Usually not. Buffering is almost always a Wi-Fi coverage problem, not a plan problem.