What speed do I need for 4K, gaming and video calls?

As a reference: 4K Netflix streaming needs 25 Mbps stable; online gaming prioritises low ping (<50 ms) and low jitter (<10 ms) over raw download; HD video calls need at least 5 Mbps both download and upload. If multiple users share the connection, multiply by the number of devices.

Why do the results vary between tests?

Your connection isn't constant: it depends on ISP load, the chosen test server, the state of WiFi at that moment and the apps using the network. 10-20 % variations are normal. For a reliable number, do 3-4 tests several minutes apart and average them.

Is the speed test safe?

Yes. The test only exchanges data packets with no sensitive content against a measurement server to compute download, upload and latency. It does not access your files, analyse your traffic or store personal information. Your IP is used only to route the test.

Should I disable my antivirus or VPN?

If you use a VPN, the test measures speed through the encrypted tunnel, which is usually lower than the real one. Temporarily disable it to know your true connection speed. Antivirus rarely affects results significantly.

What's the difference between Mbps and MB/s?

Mbps is megabits per second (what the test and ISPs advertise); MB/s is megabytes per second (what download managers show). 1 byte = 8 bits, so MB/s ≈ Mbps ÷ 8. On a 600 Mbps plan you'll download at most around 75 MB/s under ideal conditions.

Why is upload much slower than download?

Residential connections are asymmetric by design: they prioritise download because the average user consumes more than they produce. If you need more upload (streamers, heavy remote work), look for symmetric fibre plans. DSL and cable are always heavily asymmetric.

Does it work on 4G/5G mobile?

Yes. It works on any internet connection. Keep in mind the test will use your mobile data allowance (around 50-150 MB per run depending on your speed), so avoid it if you're on a limited data plan.

No install · No sign-up

Internet Speed Test Online

Measure the real speed of your connection with a reliable test: download, upload, ping and jitter. Accurate results in seconds, straight from the browser.

Start test now See more tools

Results in under 30 sAuto nearest serverNo IP or result storedWorks on mobile and desktop

The four metrics that matter

What a good speed test measures and why each number counts.

⬇️

Download

Mbps

How fast your connection receives data. Determines how quickly pages, streams and downloads load.

⬆️

Upload

Mbps

How fast you send data. Critical for video calls, cloud backups or publishing content.

⏱️

Ping (latency)

Round-trip time of a packet to the server. The lower, the smoother everything feels. Vital for gaming and calls.

📊

Jitter

Variation between consecutive pings. Low jitter means a stable connection; high jitter causes VoIP and gaming glitches.

How to measure your speed in 3 steps

No installation, no sign-up and instant results.

Open the test

Connect to the network you want to measure (WiFi, ethernet or 4G/5G). Close other downloads and streams to avoid contaminating the result.

Press Start

The test auto-picks a nearby server and measures latency, download and upload for around 20-30 seconds.

Compare the result

Note the number and compare it with the speed your ISP sold you. Repeat the test several times to get a more accurate average.

What is a speed test for?

Real cases where knowing your speed changes decisions.

🎮

Online gamers

Check that ping to your game server is low and stable. High jitter means unexpected lag even when download is fine.

🎥

Video calls & remote work

Make sure your upload speed is enough for Zoom, Meet or Teams without glitches or robotic voice. Good calls start with stable upload.

📺

4K streaming

Netflix recommends 25 Mbps stable download for 4K. The test confirms whether your plan delivers that with multiple devices connected.

📞

Push back on your ISP

If you pay for 600 Mbps and measure 150, you have a case. Save screenshots with date and time as evidence.

🏠

WiFi diagnostics

Measure speed in different parts of the house to find dead zones. Plug into ethernet to rule out router issues.

✈️

Hotels and coworking

Check whether the venue's WiFi can carry your workload before starting the day. A quick test avoids surprises mid-call.

Tips for a reliable result

🔌

Use ethernet when possible

Cable removes WiFi loss and reflects the real speed contracted with your ISP.

📶

Get close to the router on WiFi

The farther you are, the more loss. Measure near the router to compare to the contracted speed.

⏰

Repeat at different times of day

Speeds vary with network congestion. Measure morning and evening for the full picture.

🚫

Pause downloads and streams

Any active process eats bandwidth and skews the result. Close Netflix, Spotify and system updates.

Frequently asked questions

What people ask when measuring their internet speed.

Several factors: distance to the router, WiFi interference, connected devices, ISP congestion at peak hours, cabling quality and your device's own limits. Plug directly into the router via ethernet to rule out WiFi and repeat the test at different times of day.

Related tools

🛰️

GPS Speedometer

Real speed measured by GPS in real time.

🗺️

GPS Navigation

Map with your position and bearing.

🌍

World Clock

Time zones for international meetings.

Measure your speed now

No sign-up, no install and no waiting. Know the real speed of your internet in under a minute.

Start test free See all tools