Speedester Internet Speed Test
1&1 Internet Speed Test
1&1 Internet Speed Test – Check Your Download & Upload Speed Instantly
The 1&1 Internet Speed Test is a quick and reliable way to measure your internet connection performance. Using Speedester.com, users can easily check download speed, upload speed, ping, and jitter with just one click. Whether you are streaming, gaming, working remotely, or browsing, testing your internet speed helps ensure you are getting the performance you pay for.
Simply press “GO”, and Speedester will instantly analyze your internet connection and provide accurate results.
How to Perform the 1&1 Internet Speed Test
Follow these simple steps to check your internet speed:
Open any web browser on your device.
Type https://speedester.com in the address bar.
Select a host ISP manually or allow the tool to automatically choose the best available server.
Click the “GO” button to start the test.
View real-time results for download speed, upload speed, ping, and jitter.
This test works on desktops, laptops, tablets, and mobile devices without requiring any software installation.
What Does the 1&1 Speed Test Measure?
Download Speed – How fast data is received from the internet (important for streaming and browsing).
Upload Speed – How quickly data is sent from your device (important for video calls and uploads).
Ping (Latency) – The response time between your device and the server.
Jitter – Variation in ping, crucial for gaming and VoIP calls.
About 1&1 AG
1&1 AG is a leading German telecommunications company headquartered in Montabaur, Rhineland-Palatinate. Listed on the TecDAX, the company offers a wide range of broadband and mobile services with value-added solutions such as IPTV, Video on Demand, and online storage.
Founded: Germany
Employees: 3,167
Revenue (2021): €3.91 billion
Customer Contracts (2021): 15.4 million
Mobile: 11.2 million
Broadband: 4.2 million
1&1 Products and Services
Glass Fibre Internet
1&1 Glass Fibre provides ultra-fast internet for private and business customers. It is ideal for households with multiple connected devices and businesses that depend on cloud services, streaming, and heavy data usage.
DSL Internet
1&1 DSL delivers stable and high-speed connectivity, perfect for streaming, gaming, video conferencing, and everyday business operations.
Mobile Services
1&1 offers flexible mobile plans for individuals and businesses, including voice calls, SMS, and high-speed data packages.
Smartphones
Customers can choose from a wide range of smartphones from top brands, suitable for both private and professional use.
Tablets
1&1 provides tablets designed for browsing, gaming, reading, and working on the go, making them ideal for professionals and students.
Domain & Hosting Services
1&1 also specializes in domain registration, website hosting, email hosting, and Office solutions, helping businesses establish a strong online presence with professional tools and email addresses.
Why Use Speedester for 1&1 Internet Speed Test?
Fast and accurate results
No downloads or registration required
Supports all devices and networks
Tests real-world internet performance
Final Thoughts
Using the 1&1 Internet Speed Test on Speedester.com is the easiest way to monitor your connection quality. Whether you are using Glass Fibre, DSL, or mobile internet, regular speed tests help ensure optimal performance and identify connectivity issues early.
Test your speed today and stay connected at top performance 
1&1 Internet Speed Test – Check Your Download & Upload Speed Instantly
The 1&1 Internet Speed Test is a quick and reliable way to measure your internet connection performance. Using Speedester.com, users can easily check download speed, upload speed, ping, and jitter with just one click. Whether you are streaming, gaming, working remotely, or browsing, testing your internet speed helps ensure you are getting the performance you pay for.
Simply press “GO”, and Speedester will instantly analyze your internet connection and provide accurate results.
How to Perform the 1&1 Internet Speed Test
Follow these simple steps to check your internet speed:
Open any web browser on your device.
Type https://speedester.com in the address bar.
Select a host ISP manually or allow the tool to automatically choose the best available server.
Click the “GO” button to start the test.
View real-time results for download speed, upload speed, ping, and jitter.
This test works on desktops, laptops, tablets, and mobile devices without requiring any software installation.
What Does the 1&1 Speed Test Measure?
Download Speed – How fast data is received from the internet (important for streaming and browsing).
Upload Speed – How quickly data is sent from your device (important for video calls and uploads).
Ping (Latency) – The response time between your device and the server.
Jitter – Variation in ping, crucial for gaming and VoIP calls.
About 1&1 AG
1&1 AG is a leading German telecommunications company headquartered in Montabaur, Rhineland-Palatinate. Listed on the TecDAX, the company offers a wide range of broadband and mobile services with value-added solutions such as IPTV, Video on Demand, and online storage.
Founded: Germany
Employees: 3,167
Revenue (2021): €3.91 billion
Customer Contracts (2021): 15.4 million
Mobile: 11.2 million
Broadband: 4.2 million
1&1 Products and Services
Glass Fibre Internet
1&1 Glass Fibre provides ultra-fast internet for private and business customers. It is ideal for households with multiple connected devices and businesses that depend on cloud services, streaming, and heavy data usage.
DSL Internet
1&1 DSL delivers stable and high-speed connectivity, perfect for streaming, gaming, video conferencing, and everyday business operations.
Mobile Services
1&1 offers flexible mobile plans for individuals and businesses, including voice calls, SMS, and high-speed data packages.
Smartphones
Customers can choose from a wide range of smartphones from top brands, suitable for both private and professional use.
Tablets
1&1 provides tablets designed for browsing, gaming, reading, and working on the go, making them ideal for professionals and students.
Domain & Hosting Services
1&1 also specializes in domain registration, website hosting, email hosting, and Office solutions, helping businesses establish a strong online presence with professional tools and email addresses.
Why Use Speedester for 1&1 Internet Speed Test?
Fast and accurate results
No downloads or registration required
Supports all devices and networks
Tests real-world internet performance
Final Thoughts
Using the 1&1 Internet Speed Test on Speedester.com is the easiest way to monitor your connection quality. Whether you are using Glass Fibre, DSL, or mobile internet, regular speed tests help ensure optimal performance and identify connectivity issues early.
Test your speed today and stay connected at top performance
Customer Service
Phone Number(s):
0721 9605727 (Customer-Hotline)