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What's nPerf speed test ? How does it work ?

Download bitrate
Indicates the amount of data your connection can receive in one second from the nPerf server. The highest the measured valuethe best is the bitrate of your connection.

Upload bitrate
Indicates the amount of data your connection can send in one second to the nPerf server. The highest the measured valuethe best is the bitrate of your connection.

Latency (ping)
Indicates the delay a small packet of data requires to make a round-trip from your computer to the nPerf server. The shorter the delaythe most reactive is your connection.

nPerf qualify accurately your internet connection's performances.

This speed test relies on an exclusive algorithm allowing you to measure accurately download bitrateupload bitrate and latency of your connection.

nPerf uses a worldwide dedicated servers networkwhich is optimized to deliver enough bitrate to saturate your connectionso that we can measure its bitrate accurately.

nPerf speed test is compatible with all broadband and mobile connections: ADSLVDSLcableoptical fiber FTTH / FTTBsatellitewifiwimaxcellular 2G / 3G / 4G (LTE)5G.

The nPerf speed test has been designed by telecom enthusiasts to enable you to accurately measure the speed of your Internet connection easilyin only one click! Oh... and this speed test is absolutely free of ads! Enjoy it ... and if you like itspread the word :)

What is a good test result ?

  • With 2 Mb/s in downloadaccessing your inbox is smoothand messages open instantly even large ones.
  • An upload rate of at least 1 Mb/s ensures that emails with attachments are sent swiftly and without interruption.

💡 Did you know? A plain text email usually weighs only about 50 KBbut a few attached photos can easily exceed 10 MB.

  • A bandwidth above 3 Mb/s guarantees seamless playbackeven in high audio qualitywith no buffering.
  • With 1 Mb/s upstreamyour actions (likesskipssyncing) happen instantly.

💡 Useful info: One hour of standard quality music equals about 45 MBor roughly 3 minutes of full loading time at 2 Mb/s.

  • With 3 to 4 Mb/s or more availableyou can browse efficiently on any siteeven those embedding videos.
  • At 1 Mb/s uploadinteractions on websites remain smooth. Howeverlatency plays a major role in responsiveness above 100 mspages may take noticeably longer to load.

💡 Fun fact: Google’s homepage weighs just 300 KBwhile some news sites exceed 5 MB.

  • With 20 to 25 Mb/s in downloadyou can enjoy 4K streaming on YouTubeNetflixor Disney+ without any buffering.
  • An upstream rate between 10 and 45 Mb/s allows you to stream in 1080p at 60 fps or upload large 4K videos quickly.

💡 Good to know: A 4K video can consume up to 7 GB per hourwhich equals a sustained rate of around 15 Mb/s.

  • With 160 Mb/s download capacityyou can download a 70 GB game in under an hour ideal for frequent gamers.
  • From 15 Mb/s upload and aboveonline synchronization is smoothvoice chat remains stableand gameplay feels seamless.

💡 Fun fact: A single Call of Duty session can generate up to 100 MB of outbound data per hour!

  • A download rate of 5 Mb/s or higher ensures fluidstable HD meetingseven with several participants.
  • A similar upload capacity keeps your image and sound clear during live transmission. To avoid delays during callslatency is key keeping it below 50 ms is ideal.

💡 Good to know: A 1080p video call can use around 1.5 GB per hour.

  • With 5 Mb/s downstreamall your content (storieslivesreels) loads rapidly and in high definition.
  • From 5 Mb/s upstreamyou can post instantlyeven large video files.

💡 Good to know: A 30 second HD Reel weighs about 25 MB at 5 Mb/sit uploads in just a few seconds.

  • At 5 Mb/s downloadyour files become available almost instantlyeven while multitasking.
  • With 5 Mb/s or more uploadtransfers are fast and steadywithout interruption.

💡 The number: 50 files of 5 MB each = 250 MBor about 6–7 minutes of transfer time at 5 Mb/s under optimal conditions.

  • With a very short delay under 20 milliseconds your calls are crisp and instantaneouswith no lag.
  • When latency rises to around 80–100 millisecondsbrowsing and video playback remain smoothbut you may notice slight delays during live conversations.
  • Latency measures how long it takes for data to travel from your device to a server and back (in milliseconds – ms). The lower it isthe more “instant” your connection feels.
  • Low latency (for example10–20 ms) allows smooth video calls and responsive online gaming.
  • High latency (for example100 ms or more) can cause audio/video delays or sluggish response times.

💡 Good to know: Latency mainly depends on your distance from the server and the quality of your network infrastructure (fiber4G/5Gsatelliteetc.). A fast connection alone doesn’t always guarantee responsiveness.