What we measure
- Ping — round-trip latency in ms.
- Download — how fast your device receives data (Mbps).
- Upload — how fast your device sends data (Mbps).
Test methodology
- Server selection — auto-selects the lowest-latency server from 6 global locations.
- Ping phase — 8 HTTP round-trips; reports the minimum.
- Download phase — 4–8 parallel streams over 10 seconds.
- Upload phase — parallel POST requests over 6 seconds.
Multi-stream parallel connections reflect real-world browser behaviour and produce more accurate results than single-connection tests.
Open source
Client-side logic is inspired by LibreSpeed by Federico Dossena.
Why trust SpeedCheckTest
Anyone can put a speed test on the internet. What separates a trustworthy tool from a gimmick isn't awards — it's transparency. Here's what we can point to honestly:
- Free, with no account required. There's no sign-up wall, no "unlock full speed with premium," and nothing to buy to get accurate results.
- Transparent methodology. This page documents exactly how we measure ping, download, and upload — including the multi-stream approach we use. You can see what the numbers mean rather than taking them on faith.
- Privacy by default. We don't collect names, emails, or payment data. Your test history lives in your browser's local storage, not on our servers. See our privacy policy.
- Open measurement basis. Our testing logic is built on the widely used, publicly documented LibreSpeed approach — the same methodology behind many reputable tools.
- Guidance, not marketing. Our articles tell you what results mean and when to be skeptical — including when your ISP's numbers don't match ours.
- Real human support. Questions and corrections go to a monitored mailbox: [email protected].
We won't claim awards we don't have or numbers we can't substantiate. What we offer is a tool you can verify, a methodology you can read, and results you can check against your plan.
Run a speed test and compare the results against the guidance in our how to read speed test results guide — then judge for yourself.