Scarlet Speedtest: check your Internet & Wi-Fi speed

Is your Internet lagging? Find out with our free speedtest!

Do you find your connection slow? Discover if your internet connection is performing at its best. Our free speedtest quickly checks your Wi-Fi or cable connection. We deliver clear, actionable facts about your speed, without any technical jargon. Get reliable results instantly to ensure your internet meets your daily needs for streaming, gaming, and working from home

How does the Scarlet Internet speed test work?

Performing an internet speed test is simple, and with Scarlet, it's even easier. Our speed check internet tool quickly analyses your connection to provide key performance indicators:

  1. For the most accurate speed test results, make sure to follow our simple recommendations first.
  2. Click on 'Go'.
  3. Wait just a few seconds while our system analyses your connection. This comprehensive internet test measures:
    • Your download speed (downlink) 
    • Your upload speed (uplink) 
    • Your latency (or ping) 
    • Your jitter 
    • All speeds are expressed in megabits per second (Mbps).

The result? You'll gain clear insights into whether your current internet speed is sufficient for your daily needs.

Scarlet respects your privacy

This speed test is completely anonymous and does not collect any personal data. Your privacy is paramount. Please consult our detailed privacy policy for more information.

Need fast, reliable, and cheap Internet?

Not a customer yet? Does cheap unlimited internet appeal to you?

With Scarlet Internet Loco, enjoy unlimited internet at just €34/month, offering a stable and fast connection. Need even more speed? Upgrade to fiber with Fiber Boost for ultimate performance. And if you're looking for an all-in-one pack at a smart price, our Trio packs are made for you.

Check our internet subscriptions

Already a Scarlet customer? Do you have issue with your Internet?

Is your Wi-Fi slow or unstable? Don't panic. With a few simple expert tips, you can significantly improve your connection speed and boost your online experience. We're here to help!

See our expert tips to optimize your internet

At Scarlet, we believe in offering you exactly what you need with simple, transparent offers and no hidden fees. Why pay more? Backed by our extensive experience in the telecom industry, we provide you with the best quality at a low price, supported by a reliable and high-performance network.

Internet speedtest: our expert tips for reliable results

To ensure your speedtest truly reflects the actual speed of your line, follow these recommendations from our technical experts:

  • Minimize network usage: Perform your speed test when no other devices or users are actively consuming bandwidth on your network.
  • Close unnecessary apps: Close all open programs, applications, and unused browser tabs on the device you are testing from.
  • Pause downloads/streaming: Stop any ongoing downloads, uploads, or streaming activities during the test.
  • Use a modern browser: Ensure you are using an up-to-date web browser like Google Chrome, Mozilla Firefox, or Microsoft Edge.
  • Connect via Ethernet (Recommended): For the most accurate result, connect your PC directly to your modem using an Ethernet cable. This eliminates potential Wi-Fi interferences.
  • Test multiple times: Run the internet speedtest several times throughout the day to get an average reading, as network traffic can fluctuate.
  • Check for malware: Verify that your computer isn't slowed down by viruses or malicious software by running your antivirus program.

Testing an internet connection also helps you understand if your performance issue stems from your internet service provider's network or simply from your local Wi-Fi setup.

Wired (Ethernet) vs. WiFi Connection: what's the difference on the test?

Wired Connection (Ethernet)

A direct, physical connection to your modem. This method offers superior stability and speed with minimal interference. It's the ideal way to ascertain the true maximum speed capabilities of your internet line.

To perform an accurate internet speed test via cable:

  • Ensure your computer is connected to the modem using a network (Ethernet) cable.
  • Temporarily deactivate your Wi-Fi on the testing device for the duration of the test.

Wi-Fi connection

While more convenient, Wi-Fi performance can be significantly impacted by various factors such as distance from the router, physical obstacles (walls, furniture), interference from other devices, and the number of connected devices.

To test your Wi-Fi network accurately:

  • Confirm network connection: Ensure you are connected to the correct Wi-Fi network (your own Scarlet network).
  • Test in various locations: Begin by testing your connection directly next to your modem to establish a baseline. Then, test in different areas of your home to identify potential dead zones or weak signal areas.

Questions about Scarlet's Ookla Speedtest?

Before you blame your modem, be aware that several factors can slow down your internet:

  • The number of devices connected simultaneously.
  • Distance from the modem (for Wi-Fi).
  • Bandwidth usage by other applications.
  • The connection technology (ADSL or optical fiber).
  • The condition of your Ethernet cable or modem.

To improve your internet speed, start by rebooting your modem, checking your installation, and limiting unnecessary connections. For more specific troubleshooting, consult our dedicated FAQs.

Our accurate internet test helps you determine if your connection can handle: demanding telework tasks, seamless 4K streaming, low-latency online gaming, and stress-free everyday Browse. The ideal speed for you primarily depends on your daily internet usage patterns and the number of users in your household. Discover the right speed for your usage by checking out our detailed guide.

To significantly boost your Wi-Fi signal and coverage: place your modem in a central, elevated location in your home; limit physical obstacles like thick walls or large furniture; and consider using a Wi-Fi booster or mesh system to extend coverage throughout your entire home. Discover all our expert tips for improving your Wi-Fi performance.

The most reliable speedtest is one that provides accurate and consistent results. At Scarlet, our internet speedcheck is powered by OoklaOpens a new window, a global leader and trusted reference for connection tests.
However, even the best speedtest cannot account for an unoptimized home network setup. For the most dependable results, we strongly recommend performing the test with a wired Ethernet connection to your modem.