windows command line network speed test

Question

if there a command line tool that will measure network upload and download speed? The speedtest.exe tool seems to provide very incorrect upload speed results.

Answer 1

Yep - you can try the following:

1. iperf3 measures max TCP and UDP bandwidth performance between two hosts. It is very accurate, used for benchmarking, and supports both upload and download. It requires a server and client setup (e.g., your own VPS or test server).

iperf3 -s        # On the server
iperf3 -c <server_ip>  # On the client (your machine)

2. fast-cli (Netflix Fast CLI)

This is a simple tool to test download/upload speeds using Netflix's Fast.com. It requires Node.js.

npm install --global fast-cli

fast --upload

3. librespeed-cli (self-hosted or public servers). It uses CLI client for the LibreSpeed test server. You can find more at GitHub: https://github.com/librespeed/speedtest-cli

git clone https://github.com/librespeed/speedtest-cli
cd speedtest-cli
./speedtest-cli.py

For general use: Try fast-cli or librespeed-cli. For technical benchmarking: Use iperf3 with a controlled server.

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hth

Marcin