Free connection diagnosis
Why does your Internet suck?
Let's find out.
Tell us what's happening. We'll test your connection and explain what's likely wrong, in plain English, with steps to fix it.
- About a minute
- No account
- No tracking
Connection path
What we test
- This deviceWi-Fi or cable
- Your routerhome network
- Your providerISP network
- The Internetsites and apps
- Response
- time and steadiness
- Lost data
- missing packets
- When busy
- slowdowns
- Speed
- down and up
Step 1
What's happening?
Pick the closest match. It tells the test what to focus on.
- My Internet is slow Pages and apps take a long time
- My Wi-Fi is slow
- My Internet keeps disconnecting It drops out, then comes back
- My Internet is lagging Delays when I click, type or talk
- Gaming is lagging Rubber-banding, delayed actions
- My ping is too high
- Video calls are freezing Frozen video, robotic audio
- Streaming keeps buffering Spinning wheel, blurry picture
- Only one device is slow
- Everything in my house is slow
- Internet works on my phone but not my computer
- I'm not sure what's wrong We'll run every test
How it works
A diagnosis, not just a speed number
Tell us the problem
Lag, buffering, dropouts, slow Wi-Fi: the symptom decides which results matter most.
We test the whole path
Response time, lost data, slowdowns when busy, speed and DNS, from this device out to the Internet.
You get a plain answer
The most likely cause, how sure we are, and the steps to fix it, easiest first.
Diagnostics
What the test checks
- Response time RTT
- How long a round trip to the Internet takes, and whether it stays steady.
- Lost data LOSS
- Whether pieces of data go missing, which causes lag and frozen calls.
- Slowdowns when busy LOAD
- Whether everything stalls when someone else is downloading or streaming.
- Speed DOWN/UP
- Download and upload speed, as one clue among several, not the whole answer.
- DNS DNS
- Which service looks up website addresses for you, and how quickly.
- This device or your network? COMPARE
- Test a phone on the same Wi-Fi by scanning a code, and we'll tell you which one has the problem.
Why it's different
Built to find the cause
Plain-English results
Not just numbers: what's likely wrong, how confident we are, and what to try first.
A report for your provider
Download every measurement as a PDF, ready to attach to a support request.
Private by design
No account, no cookies, no tracking scripts. We never store your full IP address.