Internet speed test at home: How to measure correctly?
Introduction: why looking at the megabit alone isn't enough?
Many believe that if the provider promises 500 Mbps, the speed test will also show this. The reality is much more nuanced. A internet speed test doesn't just produce a single number — it gives a snapshot of your connection's state, and this snapshot depends on many factors.
A download speed (download) says a lot about video streaming and downloading, but the upload speed (upload) is crucial for video calls, cloud synchronization, and streaming. The ping is the foundation of gaming and real-time communication. If you only look at one number, you get a misleading picture.
This article is not about troubleshooting — for that, see our Slow internet causes article. Here, we focus on interpreting the measurement, the environment and the , and the practical use of results.
What does a speed test actually measure?
When you start a speed test, you are actually running three (four) separate tests in parallel. Each covers a different aspect:
Download speed
This is how much data you can download per second from the server to your device. Its unit is: Mbps (megabits per second). Important: 1 MB (megabyte) = 8 Mb (megabit). So with a 100 Mbps download, you download a file at ~12.5 MB/s.
What it affects: video streaming (Netflix, YouTube), website loading, file downloads, software updates.
Upload speed
This is how much data you can send per second from your device to the server. Same unit: Mbps. In most home packages, this is significantly lower than the download (e.g., 500/50 Mbps).
What it affects: video calls (Zoom, Teams, Meet), cloud backups (Google Drive, OneDrive, iCloud), streaming (Twitch, YouTube Live), sending email attachments, online gaming (data sent to servers).
Ping measurement (latency)
The time (in milliseconds) it takes for a data packet to travel from your device to the server and back. The lower, the better. Under 20 ms is excellent, 20–50 ms is good, 50–100 ms is average, above 100 ms is noticeably slow response time.
What it affects: online gaming (FPS, MOBA, RTS), video calls (synchronization), real-time applications, remote desktop (RDP, VNC), VoIP calls.
Jitter (ping fluctuation)
The variation in ping value over time. If the ping jumps between 20 ms and 80 ms, the jitter is high. Low jitter (< 30 ms) indicates a stable connection, while high jitter causes "lagging," choppy audio/video in calls.
What it affects: video call quality, streaming stability, online gaming experience.
Tip: A speedtest365.hu speed test tool shows all four values at once and saves your history so you can track trends.
How to measure correctly? — Rules for the measurement environment
A distorted measurement is worse than no measurement — because it gives false confidence. Here are the golden rules for reliable results:
Wired connection (Ethernet) > Wi-Fi
Wi-Fi is convenient but unstable. Walls, microwave ovens, neighboring networks, and Bluetooth devices all interfere. If possible, connect with a cable to the router. This is the only way to approach the maximum speed promised by your provider.
- Cat5e cable: max 1 Gbps
- Cat6 / Cat6a cable: max 10 Gbps (over shorter distances)
- If only Wi-Fi is available: stand near the router, use the 5 GHz band, and disable 2.4 GHz if not needed
The device matters
A 5-year-old laptop's Wi-Fi card will never measure 500 Mbps, even if the internet is that fast. Use a modern device (Wi-Fi 5 / 802.11ac minimum, better: Wi-Fi 6 / 802.11ax or Wi-Fi 6E/7). Mobile phones often measure better than older laptops.
Close background traffic
Before you measure:
- Stop torrent clients, cloud synchronization (OneDrive, Dropbox, Google Drive)
- Close video streaming sites, YouTube, Netflix on other devices
- Wait 1–2 minutes for the router to „settle” (buffers empty)
Choose the right server
Most speed test tools (including our fast, accurate speed test) automatically select the nearest server. This is the most accurate for a „best case” measurement. If you want to specifically test a foreign service (e.g., a US Netflix server), manually select a farther server.
Measure multiple times at different times
A single measurement is just a snapshot. Measure:
- Morning (6–8 AM): low traffic, often best results
- Afternoon (4–7 PM): peak time, bottlenecks appear here
- Night (10 PM–12 AM): variable, but often stable
Restart the router (if it hasn't been done in a while)
If it hasn't been rebooted for weeks, NAT tables, DNS cache, memory leaks can slow it down. A simple restart can work wonders.
What do the numbers mean in practice? — Speed requirements by activity
Not everyone needs 1 Gbps. Here are the real needs:
| Activity | Min. download | Min. upload | Max ping | Note |
|---|---|---|---|---|
| Web browsing, email | 1–5 Mbps | 5 Mbps | 200 ms | Any ADSL is enough |
| HD video streaming (1080p) | 5–8 Mbps | 1 Mbps | 100 ms | For a single stream |
| 4K video streaming (Netflix, Disney+) | 25 Mbps | 2 Mbps | 100 ms | For a single stream, more for HDR |
| Video call (Zoom/Teams 1080p) | 5 Mbps | 5 Mbps | 50 ms | Upload and ping are critical! |
| Online gaming (competitive) | 3 Mbps | 1 Mbps | 30 ms | Ping and jitter are most important |
| Streaming (Twitch 1080p60) | 6 Mbps | 6–10 Mbps | 50 ms | Upload is crucial |
| Cloud synchronization (with large files) | 10 Mbps | 10–20 Mbps | 100 ms | Upload determines speed |
| Family of 4 (simultaneous 4K + calls + gaming) | 100–200 Mbps | 20–50 Mbps | 50 ms | Total demand |
What Mbps means — what does „mega” mean?
The Meaning of Mbps Megabits per second — this is the most common unit for measuring download speed and upload speed. Do not confuse it with **MB/s** (megabytes per second), which you see in browser downloads.
Conversion: 1 MB = 8 Mb
- 100 Mbps = 12.5 MB/s
- 300 Mbps = 37.5 MB/s
- 500 Mbps = 62.5 MB/s
- 1 Gbps = 125 MB/s
So if you have a 500 Mbps plan, a 10 GB game will download in ~2.7 minutes theoretically. In practice, due to protocol overhead, server-side limits, and disk speed, 3–4 minutes is more realistic.
Calculation example: how many devices fit in one plan?
In a plan with 300 Mbps download speed (upload speed e.g., 30 Mbps):
- 2× 4K video: 2 × 25 = 50 Mbps download
- 1× video call: 5 Mbps download + 5 Mbps upload
- 1× online gaming: 3 Mbps download + 1 Mbps upload
- Background cloud sync: 10 Mbps upload
- Total: ~58 Mbps download, ~16 Mbps upload → comfortably fits, with some leftover
When is a measurement good, and when is it distorted? — Common pitfalls
Not every low number indicates a provider error. Here’s when not to worry, and when to worry:
Normal deviations (not errors)
- On Wi-Fi, 30–50% of the wired value: this is physics, not an error. 500 Mbps plan → 200–300 Mbps on Wi-Fi is normal.
- 10–20% slowdown during peak hours: expected with shared access (GPON, DOCSIS, HFC).
- Foreign server slower: due to international cables, routing, and peering limitations.
- Slower under VPN: encryption overhead + more distant server = normal.
Suspicious / distorted results (worth investigating)
- Only 10–20% of the promised value on cable: if you pay for 500 Mbps, getting 50 Mbps on cable is an error.
- Ping > 100 ms to the nearest server: routing error, overloaded network, or router issue.
- Jitter > 50 ms on cable: unstable physical layer (cable damage, connector issue).
- Upload drastically lower than promised (e.g., 2 Mbps instead of 50 Mbps): often a router QoS setting or provider limit.
- Slow at night even when no one is using it: this rules out overload.
How to decide: provider or your own network?
- Measure with a cable plugged into the router.
- If good on cable, bad on Wi-Fi → your own Wi-Fi network is the problem (router location, channel, device).
- If it's also bad over cable → ISP / incoming cable / router WAN port.
- Try another router / device to rule out your own hardware.
Important: When complaining to your ISP, always send wired measurement results** from multiple time points, with screenshots. „Slow on Wi-Fi” complaints are often rejected.
Frequently asked questions about internet speed testing
Why is the result different when I use another speed test?
Every speed test uses a different server, protocol, and algorithm. Some use multiple threads (multi-thread), others test with a single thread (single-thread). Multi-thread utilizes bandwidth better, but single-thread better reflects the real download experience (e.g., downloading a file). The speedtest365.hu shows both.
Why is upload slower than download?
Most home technologies (GPON, DOCSIS, HFC, xDSL) are asymmetric: the spectrum/light power is optimized for download. This is not a fault, it's intentional design. Symmetric (equal up/down) packages are usually found in business plans or with GPON XGS-PON technology.
What is the difference between Mbps and MB/s?
Mbps = megabit per second (network speed). MB/s = megabyte per second (file transfer speed). 1 byte = 8 bits. So 100 Mbps = 12.5 MB/s. Browsers and download managers show MB/s, speed tests show Mbps.
What ping is good for gaming?
Competitive FPS/Valorant/CS2: < 30 ms target. 30–50 ms playable. 50–80 ms noticeable lag. Above 80 ms you're at a disadvantage. Jitter (< 20 ms) is just as important as average ping.
How can I improve Wi-Fi speed?
Router in the center of the home, elevated, away from walls. 2) Force the 5 GHz band (turn off 2.4 GHz if old devices don't need it). 3) Change channels (use a Wi-Fi Analyzer app to find the least used one). 4) Mesh system / repeater if the home is large. 5) Modern router (Wi-Fi 6/6E/7).
Why does the meter show no more than 1 Gbps when I have a 2 Gbps plan?
Many don't know: most home routers have 1 Gbps WAN/LAN ports (1000BASE-T). If you have a 2 Gbps plan, you need a router with 2.5 Gbps (or 10 Gbps) ports and cable (Cat6a). Check your router's specifications!
When should I complain to my ISP?
If with a wired measurement, on at least 3 different days, even outside peak hours, you consistently get values below 30% of the promised speed. Document it (screenshot, date, time, server) and send it to customer support. According to NMHH consumer protection rules, at least 50% of the promised speed (normally) or the minimum value specified in the contract must be provided.
Summary and next steps
The internet speed test not a goal, but a tool. The meaning of the numbers comes from context: what you do with the internet, on what device, at what time, with what connection. Don't focus on the megabits, but on the experience: smooth video streaming, clear video calls, lag-free gaming.
What can you do now?
- Run a wired internet speed test a using speedtest365.hu — this is your reference.
- If the wired value is good but bad over Wi-Fi → optimize your Wi-Fi (see FAQ).
- If it's also low over cable → measure multiple times, at different times, and contact your ISP.
- Track your results: the speedtest365.hu measurement history saves your results, so you can see trends.
Need a special ISP-specific measurement? Check our ISP pages:
- DIGI speed test
- One Hungary (Vodafone) speed test
- Magyar Telekom speed test
- Znet (Yettel) speed test
Ready to measure?
Start the free, no-registration speed test now and see the real numbers!