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speedtest.doctor
Speed Test Diagnosis Blog Guides Embed widgets API & Widget Docs

Tools

Speed & Connection
DNS
IP
Wi-Fi & Local Network
Web / Site
Security & Privacy
Diagnosis (Doctor)
Do a Speed Test
The connection doctor

Internet Speed Test & Connection Diagnostics

Real download, upload, ping and jitter on self-hosted api.speedtest.doctor servers — then a diagnosis with the verdict, likely causes, and exactly what to fix. Not simulated. Not just a number.

Do a Speed Test Run a diagnosis
Metrics
5+
down · up · ping · jitter · loss
Tools
37+
across 7 categories
Page JS
~0 kb
static, by design
DIAGNOSTIC PANEL 934 Mbps DOWN PING 6 ms JITTER 1.2 ms LOSS 0.0%
The toolbox

A full diagnostic suite, not a single dial

Seven categories of fast, focused tools. Each one feeds the Doctor so your results add up to a real picture of your network.

Browse all tools

Speed & Connection

7 tools

Download, upload, latency, jitter and packet loss — the vital signs of your line.

All Speed & Connection tools

DNS

7 tools

Resolve, benchmark and audit the domain name system your network relies on.

All DNS tools

IP

6 tools

Discover, locate and audit IP addresses — yours and anyone else's.

All IP tools

Wi-Fi & Local Network

4 tools

Channels, signal quality and router health across your home or office.

Open Wi-Fi & Local Network

Web / Site

7 tools

Measure any website or host: TTFB, Core Web Vitals, routing and TLS.

All Web / Site tools

Security & Privacy

5 tools

Check for leaks, verify your VPN and see how trackable you really are.

All Security & Privacy tools

Diagnosis (Doctor)

1 tools

The differentiator: runs the full panel, then explains the verdict, the likely causes and what to do next.

Open Diagnosis (Doctor)
The differentiator

Meet the Doctor

A guided wizard that runs the whole panel, reads the results like a specialist, and writes you a report you can act on — or share.

Start a diagnosis
  1. 01

    Full panel

    We run download, upload, ping, jitter and packet loss in one pass.

  2. 02

    Plain-language verdict

    “Great for streaming, weak for competitive gaming.” No jargon required.

  3. 03

    Likely causes

    High bufferbloat? Router without SQM? We point at the probable culprit.

  4. 04

    What to fix

    Concrete, prioritised steps — from a setting to a hardware swap.

How we measure

Credible numbers, or they're worthless

A speed test is only as good as its method. Here's how we keep ours honest — the full write-up lives on our method page.

Self-hosted servers

Measurements run on api.speedtest.doctor — our own CORS-enabled endpoints, not third-party proxies.

Private by default

No account needed to test. We don't sell your results.

Open methodology

How every metric is computed is documented on our method page.

Read the full measurement method
Live speed test

Measure your connection

Download, upload, ping, jitter and packet loss — measured in your browser, then translated into a plain-language diagnosis.

Ready when you are.

Download — Mbps
Upload — Mbps
Ping — ms
Jitter — ms
Packet loss — %

Bars run yellow → green as results improve, red for poor or extreme values. Measured against our own self-hosted test servers.

Explore our network tools, read the measurement method, or integrate via the developer API and embeddable widgets.