How to use the speed calculator
Think of the busiest moment of a normal day, often the evening, and enter what is happening at the same time: how many TVs or devices are streaming, how many people are on video calls or gaming, and how many security cameras are uploading. The calculator adds up each activity's typical requirement, adds 25% headroom so the connection isn't running at its limit, and rounds up to a common plan size.
How much speed each activity uses
| Activity | Download | Upload |
|---|---|---|
| Browsing, email, social media (per person) | 3 Mbps | 1 Mbps |
| HD (1080p) streaming | 5 Mbps | – |
| 4K streaming | 15–25 Mbps | – |
| HD video call (Zoom, Teams, FaceTime) | 2–4 Mbps | 2–4 Mbps |
| Online gaming (gameplay) | 3–5 Mbps | 1 Mbps |
| Security camera (1080p, cloud recording) | – | 1–2 Mbps |
| Live streaming to Twitch or YouTube (1080p) | – | 6–8 Mbps |
Figures are based on the published recommendations of Netflix, YouTube, Zoom and the major consoles, rounded up. The calculator uses the higher figure in each range so you won't come up short.
Recommended = (sum of activities) × 1.25, rounded up to a plan size
Worked example: a family of three with one 4K TV, one HD stream, one video call and one gamer needs 9 + 25 + 5 + 4 + 5 = 48 Mbps at the busiest moment. Adding 25% gives 60 Mbps, so a 100 Mbps plan is the right choice; for upload, 3 + 4 + 1 = 8 Mbps plus headroom calls for at least 10 Mbps.
Don't forget upload speed
Most cable and DSL plans have upload speeds 10 to 20 times lower than download. That's fine for streaming, but working from home, video calls, cloud photo backup and security cameras all depend on upload. If two people regularly have video calls at the same time, look for at least 10–20 Mbps upload. Fiber plans often have equal download and upload.
Speed versus Wi-Fi
A faster plan won't help if Wi-Fi is the weak link. If you pay for 500 Mbps but your speed test shows 80 Mbps in the living room and 450 Mbps next to the router, the fix is a better Wi-Fi setup (mesh or wired access points), not a bigger plan.
Frequently asked questions
How much internet speed do I need for a family of four?
For a typical family of four with a couple of 4K or HD streams, video calls and some gaming, 100–200 Mbps download and 10–20 Mbps upload is comfortable. Enter your own habits above for a precise figure.
Is 50 Mbps enough for streaming?
Yes. 50 Mbps handles two 4K streams or up to eight HD streams at once, with nothing else running. For a household that also has calls and gaming at the same time, 100 Mbps leaves more room.
How much speed do I need to work from home?
One person working from home needs about 25 Mbps download and 5–10 Mbps upload for HD video calls, file sharing and cloud apps. Upload is often the limiting factor, especially if two people are on calls at once.
Do I need gigabit internet?
Most homes don't. Gigabit mainly helps if you regularly download large games (100 GB+), back up a lot to the cloud, or have many heavy users at once. It also needs Wi-Fi 6 or a wired connection to deliver its full speed.
Requirements are typical figures from streaming and video-call services and vary by app, quality setting and device. Leave extra room if your household's use is unpredictable.