Internet Speed Test
AvailableTest your internet connection with real measurements: download and upload speed over parallel streams, latency, jitter and request loss, with a live gauge, charts, a connection-quality score and your recent results.
Internet Speed Test
Real measurements of your connection to the NetTools server: latency, jitter, download and upload. Nothing is simulated.
- Preparing
- Latency
- Download
- Upload
- Complete
- Ping
- —
- Jitter
- —
- Download
- —
- Upload
- —
Charts appear while the test runs.
- Server
- —
- Route
- —
- Your IP
- —
- Protocol
- —
Results
Download & upload over time
Latency samples
1 Mbps = 1,000,000 bit/s. Latency and loss are measured with HTTP requests to the NetTools server (not ICMP ping); jitter is the mean difference between consecutive samples. Averages exclude a short warm-up. The test runs through Cloudflare to the NetTools server, so it reflects that whole path — another server or time of day can give different results.
Recent tests (stored only in this browser)
How it works
Your browser measures real transfers to the NetTools server. Latency: 20 HTTP round trips after a warm-up. Download: 4–6 parallel streams of incompressible data for about 10 seconds; upload: 3–6 parallel uploads for about 10 seconds. Speeds are calculated from the bytes actually transferred, excluding the first 2 seconds while connections ramp up. 1 Mbps = 1,000,000 bits per second.
How the test works
- Preparing: the page opens a short-lived test session and reads your public IP.
- Latency: 20 small HTTP requests after 2 warm-up requests; minimum, median, maximum, jitter and request loss are calculated from them.
- Download: 4–6 parallel streams of incompressible data for about 10 seconds; the first 2 seconds (connection ramp-up) are excluded from the average.
- Upload: 3–6 parallel uploads for about 10 seconds; the server counts the bytes and discards them immediately.
Connection quality (0–100) is the NetTools.tech model: download 30, upload 20, latency 25, jitter 15 and loss 10 points. It is not an industry-standard rating.
Safeguards & responsible use
- Each test uses a short-lived session bound to your IP; at most 10 tests per hour and 8 parallel streams per visitor.
- Uploaded test data is counted and discarded immediately — nothing is stored.
- The endpoints only serve generated test data; they cannot fetch or proxy other sites.
Frequently asked questions
Why is my result lower than my plan speed?
The test measures the whole path from your device to the NetTools server, including Wi-Fi, other devices using the connection, your browser, Cloudflare and the server’s own connection. Use a wired connection and close other downloads for the most accurate result.
Is the ping the same as ICMP ping?
No. It is the round-trip time of small HTTP requests, which includes a little browser and server overhead. Request loss counts requests that did not complete within 2 seconds; it is not ICMP packet loss.
What is the connection quality score?
A NetTools.tech model, not an industry standard: download 30 points, upload 20, latency 25, jitter 15 and loss 10, from documented thresholds.
Where are my results stored?
Only in your browser (local storage). Nothing is uploaded, and you can clear the history at any time.