SpeedTest - Mbps throughput speed test|
Works on ANY platform supporting Java
Download/Extract: Download speedtest.zip,
extract all files contained within this ZIP into a temp folder (eg: C:\speedtest), and
get started by reviewing the "readme.txt" file, and by reading below.
If your computer does not have Java installed, visit
Java Downloads (java.com) and install Java.
Requirements: There must be a Java VM installed (see java.com
for help) in order to run the "speedtest.jar" Java 'executable' file contained within
the download ZIP. To test if your computer has a Java VM installed, run the "java -version"
command (valid output means yes, unrecognized command means no).
First, run a 'Server': Type "java -jar speedtest.jar server" on any computer to
run the SpeedTest 'server', and you will see output similar to the following. The server is
now ready to accept speed test connections from 'clients':
Next, run a 'Client': Type "java -jar speedtest.jar server-ip-address"
on another computer to connect to the server (use the server's ip address) and download/upload
Mbps speed test results are displayed:
C:\speedtest> java -jar speedtest.jar server|
Running SpeedTest SERVER on J4/192.168.55.11 port 33333.
Waiting for clients to connect...
NOTE: If running a computer with a firewall, make sure that 'java.exe' is allowed to accept incoming
socket connections (from client computers in the next step).
Testing Wi-Fi: If your goal is to test Wi-Fi speeds, run the 'server' on a PC connected
to your Ethernet LAN, and run a 'client' on the PC with the Wi-Fi you want tested. You only want
ONE of the PC's on Wi-Fi (not both).
C:\client> java -jar speedtest.jar 192.168.55.11|
Downloading from 192.168.55.11 port 33333...
738,694,464 bytes in 1000 ms = 5,909,555,712 bps
726,603,040 bytes in 1000 ms = 5,812,824,320 bps
727,211,072 bytes in 1000 ms = 5,817,688,576 bps
733,659,104 bytes in 1000 ms = 5,869,272,832 bps
741,942,144 bytes in 1000 ms = 5,935,537,152 bps
Uploading to 192.168.55.11 port 33333...
760,922,144 bytes in 1000 ms = 6,087,377,152 bps
757,805,536 bytes in 1000 ms = 6,062,444,288 bps
746,471,424 bytes in 1000 ms = 5,971,771,392 bps
755,213,216 bytes in 1000 ms = 6,041,705,728 bps
747,978,752 bytes in 1000 ms = 5,983,830,016 bps
TIPS: As a test, also run the client on the server, to the server (itself) in order to
verify that the PC is powerful enough to run the speed test (expect Gbps results).
You should see around 950 Mbps when testing between two computers on a 1 Gbps Ethernet LAN.
Donate: If you find this program helpful, please support it with a
An Example: Here is an example of the SpeedTest program catching a speed problem with
a laptop operating on the 2.4 GHz Wi-Fi band:
In this case, the MCS Spy tool showed that
asymmetric MCS indexes / PHY speeds were being used, which explains the
Downloading from 192.168.1.103 port 33333...|
3,377,440 bytes in 1018 ms = 26,541,768 bps
3,247,680 bytes in 1001 ms = 25,955,484 bps
3,444,288 bytes in 1004 ms = 27,444,525 bps
3,593,568 bytes in 1012 ms = 28,407,652 bps
3,378,752 bytes in 1016 ms = 26,604,346 bps
Uploading to 192.168.1.103 port 33333...
5,756,256 bytes in 1001 ms = 46,004,043 bps
5,840,000 bytes in 1009 ms = 46,303,270 bps
5,708,928 bytes in 1005 ms = 45,444,202 bps
5,971,072 bytes in 1006 ms = 47,483,673 bps
5,923,744 bytes in 1007 ms = 47,060,528 bps
This document is Copyright © 2020-2023 Jerry Jongerius