Free Security Tool
What's Your
Real Internet Speed?
A fast, honest speed test — no adware, no auto-playing video, no login. Measures the three numbers that actually matter: download throughput, latency, and jitter. Runs in your browser against a global CDN. Compare with and without CyberFence VPN to see exactly what encryption costs you.
How to read the result
Three numbers that tell the whole story.
Download (Mbps)
Streaming, downloads, page loads. Anything over 100 Mbps handles 4K streaming and heavy remote-work traffic. Numbers below 25 Mbps become noticeable on multi-device households.
Latency (ms)
Round-trip ping to a nearby edge. Under 30 ms feels instant. Over 100 ms is noticeable on video calls and unplayable for competitive gaming. Latency depends more on network topology than bandwidth.
Jitter (ms)
Variation in latency across pings. Under 10 ms is excellent. Above 30 ms makes calls stutter and games desync. High jitter is usually a Wi-Fi, router, or bufferbloat problem — not the ISP.
Grade
An overall letter grade combining all three, weighted by how each affects real-world use. A/A- is excellent. B is fine for most homes. C or below means something worth investigating on your side of the router.
Track your speed over time
Save this result and get a monthly re-test reminder.
Once a month we'll email you a link back to this test so you can see whether your ISP is delivering what you're paying for over the long term. No spam, one-click unsubscribe.
See What Encryption Actually Costs
Run this test with CyberFence VPN on — see the real overhead.
Most VPNs cost you 30-50% of your speed. That's a broken product. CyberFence VPN uses WireGuard with kernel-level acceleration on every platform, which is why our residential benchmark drop is typically under 10% — often 5% or less. Start a free trial, re-run this test, and see the real number for your connection.
- ✓ WireGuard with kernel-level acceleration on Mac, Windows, iOS, Android
- ✓ Global edge network with automatic nearest-server selection
- ✓ Always-on kill switch — no data leaks during reconnect
- ✓ Zero-knowledge DNS — queries never leave the encrypted tunnel
FAQ
Common questions about speed tests.
How does this speed test work?
This tool measures three numbers your ISP promises but rarely delivers consistently: download throughput, latency, and jitter. Download is measured by streaming a fixed-size payload from a global CDN and timing every byte. Latency is measured as round-trip time to a nearby edge node — the "ping" everyone talks about. Jitter is the variance in latency across multiple pings — high jitter is what makes video calls freeze and gaming feel laggy even at high download speeds. Runs entirely in your browser. Nothing about your connection is stored.
Why does this reading differ from Speedtest.net or fast.com?
Every speed test measures against different servers, at different times of day, over different protocols. Small differences (10-20%) are normal and expected. Large differences usually mean either the other tool is testing against a server closer to you, or your local Wi-Fi is the bottleneck rather than the ISP connection. What matters is the trend over multiple runs and whether the numbers roughly match what your ISP is charging you for.
Does using a VPN slow me down?
A well-run VPN adds 5-15% overhead — a small tax for encryption and re-routing. If you see a >30% drop after connecting a VPN, either the VPN server is congested, the protocol is misconfigured (WireGuard beats OpenVPN by 30-50% on modern hardware), or the server you selected is very far away. CyberFence VPN uses WireGuard with modern kernel-level acceleration on every platform, which is why our benchmark drop is under 10% on residential connections and often 5% or less.
What is jitter and why does it matter?
Jitter is the variation in latency between packets. A connection with 20ms ping but 40ms jitter feels far worse than one with 60ms ping and 5ms jitter, because packets arrive irregularly — video freezes, voice cuts out, game inputs desync. High jitter is usually caused by Wi-Fi interference, an overloaded router, or bufferbloat somewhere upstream. If your jitter is above 30ms during a live call, that is usually the problem to fix — not your download speed.
What is a "good" speed in 2026?
For a single user, 25/5 Mbps handles all typical use including 4K streaming. For a household with several devices and remote work, 200-500 Mbps down and 20-50 Mbps up is the modern sweet spot. Gigabit and beyond mostly benefits large-file professionals and heavy simultaneous 4K streaming. Latency matters more than raw speed for anything interactive — video calls, gaming, remote desktop — and anything under 30ms latency to a nearby city feels excellent.
Does this test store my results or IP?
No. The test runs in your browser and hits a public CDN edge. We log an anonymous ping to Google Analytics with your download Mbps and latency ms so we can improve the tool. That log does not include your IP address, does not associate results with any account, and closing the tab discards everything. If you want to save results (with a monthly re-test reminder), you can opt in via the email form on this page.
Should I run this over Wi-Fi or Ethernet?
Ethernet, if you have the option. Wi-Fi adds a variable amount of overhead depending on signal strength, interference, and how many devices share your access point. If you want to test what your ISP is actually delivering, plug in directly. If you want to test what your device experiences day-to-day, Wi-Fi is the more honest number. Best practice: run both, then compare — a big Ethernet-vs-Wi-Fi gap is usually a router or placement problem, not an ISP problem.