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Speed Test
About



When you run Speed Test, your IP address will be shared with Cloudflare and
processed in accordance with our privacy policy.  
Learn More 

When you use Speed Test, Cloudflare receives the IP address you use to connect
to Cloudflare’s Speed Test service. Cloudflare uses your IP address to estimate
your geolocation (at the country and city levels) and to identify the Autonomous
System Number (ASN) associated with your IP address.

Cloudflare shares anonymized measurement information (e.g., the estimated
geolocation, ASN associated with your Speed Test, etc.) with our measurement
partners as part of Cloudflare’s contribution to a shared Internet performance
database. We do not share your IP address with our measurement partners.

As a part of this Speed Test, Cloudflare receives the following information:

 * Your IP address;
 * An estimate of your location (Country, City);
 * The Autonomous System Number of your ISP (ASN).

Cloudflare truncates your IP address that it receives as part of your use of the
Speed Test to /24 and /48 for IPv4 and IPv6 addresses, respectively.

Start
Note: A speed test can consume up to 200MB of data.
Your Internet Speed
Download
Download determines how fast your network connection can get data from the test
network. This is important when downloading large files such as updates for
applications or streaming video services. Download speed is tested by
downloading files of various sizes. The number reported represents the 90th
percentile of all download measurements and not the absolute maximum. Scroll
down to view details.

 
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Upload
Upload determines how fast your network connection can transfer data to the test
network. This is especially important for applications such as FTP or if you are
the source for a live video stream. Upload speed is tested by uploading files of
various sizes. The number reported represents the 90th percentile of all upload
measurements and not the absolute maximum. Scroll down to view details.

 
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Latency
Round trip time latency (or RTT) is the time it takes for a packet to be sent
from your computer to Cloudflare's network and back. It is especially important
for applications such as gaming and video chat, where you want to be as up to
date as possible. The number reported represents the median of all RTT
measurements. Lower RTT is better.

 
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Jitter
Although median RTT is important, it only paints half the picture. RTT can go up
and down from time to time, which is noticeable in applications like video chat,
gaming, or streaming. Jitter gives you insight into how much variation we see in
the RTT measurements. It's calculated as the average distance between
consecutive RTT measurements. Lower jitter is better.

 
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Packet Loss
Packet loss indicates the presence of packets that are lost in the communication
with the testing network. A high packet loss rate can cause jitter to rise and
disrupt real-time sensitive applications like streaming and gaming. It's
calculated as the percentage of UDP packets that are not received after being
relayed through a WebRTC TURN server.

 
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Network Quality Score
Aggregated Internet Measurement (AIM) helps you understand your Internet quality
to identify scenarios that your Internet connection is good or bad for.
Typically, an Internet speed test provides you with upload and download speeds,
which may not always provide a holistic view of your Internet quality.
Learn more
waiting to finish measurements...
Server Location
Shows the data center that’s currently being used to test your network
connection. Data center locations are tracked as airport codes and may not be
100% accurate.
© Mapbox © OpenStreetMap Improve this map





Connected via IPv6
Server location: Amsterdam
Your network: i3D.net (AS49544)
Your IP address: 2a00:1630:2:1c03::7
Latency Measurements
Each measurement represents the amount of time an HTTP request took to reach the
server. It’s calculated by determining the time to first byte and subtracting
the amount of processing time the server took to handle the request.
Unloaded latency (0/1)

waiting for measurements...



The thick bar covers all measurements that fall within the 25th to 75th
percentile. The solid line marks the median score whilst the dotted line
represents average.
 * Min: ∞s
 * Max: -∞s
 * Average: NaN s
 * Median: 0 s
 * 25th percentile: 0 s
 * 75th percentile: 0 s

Latency during download (0)

waiting for measurements...



The thick bar covers all measurements that fall within the 25th to 75th
percentile. The solid line marks the median score whilst the dotted line
represents average.
 * Min: ∞s
 * Max: -∞s
 * Average: NaN s
 * Median: 0 s
 * 25th percentile: 0 s
 * 75th percentile: 0 s

Latency during upload (0)

waiting for measurements...



The thick bar covers all measurements that fall within the 25th to 75th
percentile. The solid line marks the median score whilst the dotted line
represents average.
 * Min: ∞s
 * Max: -∞s
 * Average: NaN s
 * Median: 0 s
 * 25th percentile: 0 s
 * 75th percentile: 0 s

Packet Loss Measurements
Each measurement represents a UDP packet that was sent to the TURN server for
relaying. The WebRTC packet receiver is also configured in this application,
thus every packet that is not received contributes to the packet loss rate.
After sending all the test packets, there is a short time window to wait for the
reception of all the packets still in transit.
Packet Loss Test

waiting for measurements...

Download Measurements
Each measurement represents the actual time it took to transfer the file. To do
this, we start measuring from the moment we start receiving the actual first
byte of data. This omits the time required to actually perform and process the
actual HTTP request.
waiting for measurements...
Upload Measurements
Each measurement represents the actual time it took to upload the file. To do
this, we start measuring from the moment we start uploading the file till we
receive the first byte of the acknowledgement.
waiting for measurements...

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