Free WiFi Speed Test โ Check Your Real Connection Speed
This free speed test measures your actual WiFi performance โ download speed, upload speed, and latency โ by connecting to the nearest server edge. Unlike basic tests, we measure your WiFi speed, not just your ISP speed. The difference matters: your provider might deliver 200 Mbps to your router, but your WiFi could be delivering only 30 Mbps to your device due to walls, distance, and interference.
Download Speed
How fast data travels from the internet to your device. This determines how quickly web pages load, videos stream, and files download. Measured in Mbps (megabits per second). Most streaming services need at least 25 Mbps for 4K video.
Upload Speed
How fast data travels from your device to the internet. Critical for video calls, uploading files, live streaming, and cloud backups. Typically slower than download speed on most home connections.
Ping (Latency)
The time it takes for a signal to travel to the server and back, measured in milliseconds. Low ping (under 30ms) is essential for gaming, video calls, and real-time applications. High ping causes lag even if your speed is fast.
What Is a Good WiFi Speed?
Frequently Asked Questions
Why is my WiFi speed different from what I pay for?
Your internet provider delivers speed to your router, not to your device. WiFi signal degrades as it passes through walls, floors, and furniture. A home paying for 200 Mbps might only get 40 Mbps on a device two rooms away. This is a WiFi problem, not an ISP problem โ and it's fixable.
What affects WiFi speed inside my home?
Wall materials: Brick, stone, and concrete block signal more than wood or plasterboard. Distance: Signal strength drops exponentially with distance from the router. Interference: Neighbouring WiFi networks, microwaves, and Bluetooth devices compete for the same frequencies. Device count: Every connected device splits the available bandwidth.
How can I improve my WiFi speed?
The most effective fixes depend on your specific situation. Router placement (higher, central, out of cupboards) helps most homes. For larger homes or thick walls, a WiFi extender or mesh system eliminates dead zones. Our free diagnostic analyses your exact setup and recommends the right fix.
What's the difference between download and upload speed?
Download speed affects streaming, browsing, and receiving files โ it's what most people notice. Upload speed affects video calls, sending emails with attachments, cloud backups, and live streaming. Most ISPs provide faster download than upload speeds.
What is ping and why does it matter?
Ping (or latency) measures the delay between your device and the server in milliseconds. Low ping means faster response times. It's crucial for online gaming (where high ping causes lag), video calls (where it causes audio delay), and any real-time interaction. Under 30ms is excellent, 30โ80ms is acceptable, above 100ms is noticeable.
Should I test on WiFi or ethernet?
Test on WiFi to measure what your devices actually experience. If you test on ethernet and get much higher speeds, that confirms your WiFi โ not your internet โ is the bottleneck. This is actually good news: it means the fix is inside your home and doesn't require changing your internet plan.
How accurate is this speed test?
This test connects to globally distributed CDN edge servers, measuring real throughput between your device and the nearest server. Results reflect your actual WiFi performance at the moment of testing. For the most accurate results, close other browser tabs and apps that use bandwidth, and stand where you normally use your device.
Why do my results change each time I test?
WiFi speeds fluctuate based on network congestion, how many devices are active, interference from neighbours, and even time of day. If your speeds vary significantly between tests, that instability itself is a symptom worth diagnosing.
About This Speed Test
This free WiFi speed test is provided by WiFi Diagnostic, an AI-powered tool that helps homeowners identify and fix WiFi problems. Unlike generic speed tests that only show numbers, we go further โ after testing your speed, our diagnostic analyses your specific home setup (wall types, router placement, device count) and recommends the exact fix. Over 14,200 homes diagnosed with a 94% first-try fix rate.
Why is your WiFi
so slow?
Select all that apply โ takes 60 seconds to get your free diagnosis.
What are you doing when it fails?
This helps us understand how sensitive your fix needs to be.
Tell me about your home
Where is your router right now?
How many devices share your WiFi?
How far is the outdoor area from your router?
What's between your router and the outdoor area?
What do you need WiFi out there for?
When does it drop most?
Random drops are often a different problem to dead zones โ this helps us identify the real cause.
How old is your router?
Roughly how many devices connect to your WiFi?
Running Diagnostics
Your diagnosis is ready.
We've analysed your setup and found the exact cause of your WiFi problems. Enter your email to unlock your personalised diagnosis and fix.