Netflix’s FAST.com internet speed test adds upload and latency

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Netflix's internet speed test tool called FAST.com is getting a major update two years after its launch. This is clutch, simply because the service only ever detailed download speeds before this change.

Almost two years ago, Netflix launched FAST.com, a free internet speed test to let customers check their speeds from their internet service providers. Netflix says the tool generated more than half a billion speed tests so far, doubling in growth in the past seven months. The service has become significant since it measures your connection to Netflix's servers. By default, FAST.com will continue to only display your download speed, and it will only calculate latency and upload stats after you choose to view more info.


Sergey Fedorov, Senior Software Engineer, Content Delivery at Netflix said in a blog post "We all want a faster, better internet, yet internet speeds vary greatly and can be affected by other users on your network, or congestion with your internet service provider".

Netflix's internet speed testing site, FAST, is getting updated to show upload speeds and connection latency.


Upload speed is pretty straightforward and measures the speed of the connection for uploading data from a user's device to the internet. The loaded latency measures the round-trip time when data-centric applications are being used on the network. The app will measure latency on both an unloaded basis (no other traffic on a user's network) and a loaded basis (data heavy apps are being employed on the network). In ideal scenario, the values for unloaded and loaded latency should be close to each other.


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