Ping (latency)
The time, in milliseconds, a packet takes to reach the server and come back. The lower it is, the more "responsive" the connection feels.
- < 30 ms Great for gaming and video calls
- 30–80 ms Good for everyday use
- > 100 ms Noticeable lag
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How fast is your connection, really?
Measure ping, jitter, download and upload with a modern, accurate test. Then learn how to read the numbers and what you can improve.
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What is a speed test and what it measures
A speed test measures the quality of your Internet connection in real time by opening several connections to neutral servers (here we use Cloudflare's global infrastructure) and timing how fast data travels. RealMbps does it entirely in your browser, with nothing to install and without storing your results.
The test returns four numbers. Ping (latency) is the delay, in milliseconds, for a packet to reach the server and come back: it matters for gaming and video calls. Jitter is how much ping varies over time: the lower it is, the more stable the connection. Download is how fast you receive data (streaming, browsing, updates). Upload is how fast you send data (video calls, cloud backups, posting photos and videos).
To read the results well, compare them with your plan's speed, remembering that 1 byte = 8 bits: a "1 Gig" fibre line (1000 Mbps) downloads at most around 125 MB/s. Differences of 10-30% from the contracted value are normal due to Wi-Fi, router and device. In the sections below you'll find how to interpret each value and how to improve your connection.
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How to read the results
Four numbers tell the story of your network. Here is what they really mean.
Jitter
How much ping varies from one packet to the next. High jitter means choppy audio/video, even if average ping looks fine.
- < 5 ms Stable
- 5–20 ms Acceptable
- > 30 ms Unstable connection
Download
How fast you receive data: streaming, browsing, updates. The most "spectacular" number, but on its own it isn’t enough.
- > 100 Mbps 4K, multi‑device, smart home
- 25–100 Mbps HD streaming and work
- < 10 Mbps Struggles in HD
Upload
How fast you send data: video calls, cloud backup, online gaming, live streaming. Often overlooked, but crucial for remote work.
- > 20 Mbps Live streaming, cloud
- 5–20 Mbps HD video calls
- < 3 Mbps Video calls struggle
How to improve your connection
Small changes that often make a big difference — before calling your provider.
Use a cable when you can
An Ethernet cable removes interference, packet loss and Wi‑Fi swings. For desktop PCs, consoles and smart TVs it is almost always the best choice.
Place the router properly
Centre of the house, up high, away from metal, microwaves and aquariums. Thick walls and mirrors are sworn enemies of Wi‑Fi.
5 GHz band for speed
2.4 GHz reaches further, but 5 GHz is much faster and less congested. For devices close to the router, always pick it.
Update router and firmware
If your router is more than 4–5 years old, it is probably the bottleneck. Look for Wi‑Fi 6 / 6E models and keep firmware up to date.
Mesh instead of repeaters
Mesh systems spread the signal intelligently without halving bandwidth like old range extenders.
Reduce digital "noise"
Close apps using the network in background, pause cloud sync during calls and check no device is downloading updates.
Faster DNS
Try public DNS like 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google). They do not raise download speed, but make browsing snappier.
Restart the right way
Power the modem off for 30 seconds before turning it back on. It sounds trivial, but it frees memory, sessions and routing tables built up over days.
Check your plan
If real numbers are far from your contract, run more tests at different times (cable + Wi‑Fi). With data in hand, file a complaint or switch plan.
Frequently asked
Why is the result different from my provider’s?
Your provider measures speed to the nearest node under ideal conditions. RealMbps measures what actually reaches your device, through Wi‑Fi, router, OS and browser. Differences of 10–30% are normal.
Megabits (Mbps) or Megabytes (MB/s)?
Connections are measured in Megabits per second. 1 byte = 8 bits, so 100 Mbps ≈ 12.5 MB/s. That is why downloads show "smaller" numbers.
How much speed do I really need?
Netflix 4K needs ~25 Mbps, 4K HDR ~50 Mbps. A remote‑working family with several HD TVs lives comfortably on 100 Mbps symmetrical. Beyond that, stability matters more than the headline number.
Is Wi‑Fi limiting my test?
Almost certainly yes if your line is above 300–400 Mbps. Repeat the test on Ethernet near the router: if numbers go up, the issue is Wi‑Fi, not the connection.
Does RealMbps collect personal data?
No. The test runs entirely in your browser, against public Cloudflare servers. We do not store results, use tracking cookies or profile anything.
Why does upload matter, not just download?
Download drives streaming and browsing, but upload carries video calls, cloud backups, online gaming and photo/video sharing. On asymmetric lines (e.g. FTTC 200/20) a low upload is often the real bottleneck when working from home.
Does the test work on mobile and 4G/5G networks?
Yes. The algorithm detects mobile networks and adapts chunk size to measure correctly on 4G/5G, where many speed tests fail. Keep in mind radio signal varies: repeat the test in different spots for a reliable average.
How often should I test my connection?
For a realistic picture, run 3-5 tests at different times: morning, afternoon and during the evening peak (9-11pm), when your ISP network is busiest. A single test says little; consistency over time reveals the true health of your line.
Guides & deep dives
Practical articles to measure, understand and improve your connection.
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Read → BasicsMbps vs MB/s: the difference in 2 minutes
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Read → OptimizationHow to speed up your internet connection
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