Xunglee / Speed
Upload.
Your connection. Measured, not guessed.
Test server Xunglee Server
Ready when you are
—MbpsResults measure the connection between your browser and this test server. They can differ from other tests depending on network conditions and server capacity.
Your connection may charge for this data. Press GO only when you want to start.
Ready when you are
Localhost checks functionality only. It does not measure your external Internet connection.
Transfer budget reached. This short sample may underestimate faster connections; it is not a speed cap estimate.
Measurement details
Samples
| Measurement details | Duration (s) | Mbps |
|---|
History on this device
Nothing is saved automatically. Save a result to keep up to 20 tests in this browser. No IP address or identifiers are included.
Your browser
IP ↗Using this tool with confidence
How to use it
Use Upload to measure generated test data sent from your browser to the server. No personal file is selected. The server counts the received body and returns an acknowledgement; it does not retain it as an uploaded document.
Worked example
A transfer is counted only after the server acknowledges its actual byte count. The measured interval therefore includes sending and the return acknowledgement. This can differ from an application that reports only the time spent filling a local upload buffer.
Interpretation and limits
Backups, video calls and other devices may compete for upstream bandwidth. The result is not a guarantee for a particular cloud service. Web-server buffering, latency and the server’s receiving capacity also affect this HTTP measurement.
Understand your results
Mbps and MB/s
Mbps means millions of bits per second; MB/s means millions of bytes per second. Divide Mbps by 8 for decimal MB/s. Download receives data; upload sends it. These results include HTTP and server overhead.
HTTP latency and jitter
The browser cannot perform ICMP ping here. HTTP latency is the round-trip request time, including server processing. Jitter is the mean absolute difference between consecutive latency samples: sum(|r[i]−r[i−1]|)/(n−1). It is not an ICMP or packet-level jitter measurement.
Why tests differ
Wi-Fi signal, Ethernet, congestion, distance, shared hosting load, PHP capacity, browser CPU and protocol overhead affect the result. Proxies/CDNs, HTTP/2 or HTTP/3, compression, disk spooling and buffering can also change it. This is one server and one route, not a certified line-capacity test.
Download counts received payload bytes using a monotonic clock. Upload counts only bytes acknowledged by the server until its response arrives. Calibration is excluded from speeds but consumes the allowance. Aborted or unacknowledged upload data is not counted in the result.