Xfinity
CableBest value100Mbps
$35/mo
↑ 10 Mbps up · $0.35/Mbps · +300% over what you need
Budget-friendly entry plan for 1-2 people.
Free internet speed tool
Internet Speed Calculator — what speed do you need?
Find out what internet speed you actually need. Enter your household size, connected devices and the things you do online at the same time — like 4K streaming, gaming and video calls — and we'll recommend a plan and show matching ISP options with real prices.
👥People in household
2
📱Connected devices
phones, TVs, consoles…4
Quick start:
What are you doing online?
Tick what happens at the same time and set how many run at once.
1simultaneous
+5 Mbps1simultaneous
+5 MbpsRecommended speed
25Mbps
For 2 people · 4 devices · 2 activities
01003006001 Gbps
How it's calculated
- 1 x HD 1080p streaming5 Mbps each+5
- 1 x Web browsing5 Mbps each+5
- 4 connected devices1 Mbps background each+4
Raw total (3 lines)14 Mbps
Safety headroom (x1.29)+4.1 Mbps
Rounded to a standard plan tier+6.9 Mbps
Recommended (×1.29 headroom)25 Mbps
Matching ISP plans
8 optionsAstound
Cable300Mbps
$35/mo
↑ 10 Mbps up · $0.12/Mbps · +1100% over what you need
Among the cheapest 300 Mbps plans anywhere.
Cox
Cable100Mbps
$40/mo
↑ 10 Mbps up · $0.40/Mbps · +300% over what you need
Entry cable plan for light use.
Xfinity
Cable300Mbps
$45/mo
↑ 10 Mbps up · $0.15/Mbps · +1100% over what you need
Solid mid-tier for small families.
Frontier
Fiber500Mbps
$45/mo
↑ 500 Mbps up · $0.09/Mbps · +1900% over what you need
One of the cheapest symmetric fiber plans.
Astound
Cable600Mbps
$45/mo
↑ 20 Mbps up · $0.07/Mbps · +2300% over what you need
Big download speed for a low price.
T-Mobile Home
5G100Mbps
$50/mo
↑ 20 Mbps up · $0.50/Mbps · +300% over what you need
Fixed-wireless 5G, no contract or data cap.
CenturyLink
Fiber100Mbps
$50/mo
↑ 100 Mbps up · $0.50/Mbps · +300% over what you need
Price-for-life fiber entry tier.
Typical U.S. residential pricing for illustration. Actual speeds and prices vary by address, provider and promotion.
How much internet speed do you need?
The right speed is the one that keeps every person and device happy at the same time — not the fastest plan on the menu. Start with the Mbps each activity uses, multiply by how many run concurrently, then add a headroom buffer for evening rush hour. Use the table below as a reference, or let the calculator above do the math.
1-2 people · light use
25-100 Mbps
Browsing, HD streaming, occasional video calls.
3-4 people · typical
100-300 Mbps
Several HD or one-two 4K streams, calls, gaming.
5+ people · busy
300-1000 Mbps
Multiple 4K streams, gaming and work-from-home at once.
Power & smart homes
1000+ Mbps
Many concurrent devices, big uploads, future-proofing.
Mbps requirements by activity
These are the per-stream download speeds we use for each activity. Multiply by the number running at once to estimate your household baseline.
| Activity | Category | Mbps per stream | What it means |
|---|---|---|---|
| 📺SD streaming | Streaming | 3 | One standard-definition video stream (480p). |
| 🎬HD 1080p streaming | Streaming | 5 | One full-HD stream on Netflix, YouTube or similar. |
| 📽️4K streaming | Streaming | 25 | One ultra-HD (2160p) stream. The single biggest household bandwidth hog. |
| 🎥Video call | Work | 6 | One Zoom / Meet / FaceTime call with camera on. |
| 🎮Online gaming | Gaming | 10 | One console or PC game online. Latency matters more than raw speed. |
| ☁️Cloud gaming | Gaming | 35 | One GeForce NOW / Xbox Cloud stream at high quality. |
| ⬇️Large downloads | Everyday | 50 | Game installs, 4K movie files or big work files in the background. |
| 🏠Smart home devices | Everyday | 5 | A cluster of cameras, doorbells, speakers and hubs active at once. |
| 🌐Web browsing | Everyday | 5 | One person browsing, scrolling social feeds and reading. |
| 🎧Music streaming | Everyday | 2 | One Spotify / Apple Music stream. Very light. |
| 💼Working from home | Work | 10 | One remote worker: files, calls, screen share combined. |
Don't forget your devices
1-5 devices
6-10 devices
11+ devices
Every connected device adds a little background traffic (updates, pings, keep-alives) even when idle. We budget a small amount per device on top of your activities. In the calculator we budget 1 Mbps of background traffic per connected device, on top of whatever activities you select.
Internet speed FAQs
What internet speed do I need?
It depends on how many people and devices share your connection and what they do at the same time. Most households are comfortable on 100-300 Mbps. Add up the Mbps each simultaneous activity needs, then add 25-50% headroom for peak hours. The calculator above does this for you.
How much Mbps do I need for 4K streaming?
Plan on about 25 Mbps per 4K (ultra-HD) stream. Two simultaneous 4K streams need roughly 50 Mbps before headroom, so a 100-300 Mbps plan keeps things smooth even when others are online.
Is 100 Mbps fast enough?
For one to three people doing a mix of HD streaming, browsing and video calls, yes. If you regularly run multiple 4K streams, cloud gaming or large downloads at once, 300 Mbps or more is safer.
Do I need gigabit (1000 Mbps) internet?
Most homes do not. Gigabit makes sense for large households with many concurrent 4K streams and gamers, homes that upload big files or livestream, and houses packed with smart devices. Otherwise you will likely pay for speed you never use.
What is a good upload speed?
Video calls, cloud backups and content creation rely on upload. Cable plans often give only 10-35 Mbps up, while fiber is usually symmetric (upload equals download). If you work from home on camera or create content, favor fiber.
How many Mbps does each device need?
Idle devices use very little, but each one adds a little background traffic for updates and keep-alives. Budget roughly 1 Mbps per connected device on top of your active usage, and focus your planning on the activities running at the same time.