Free internet speed test

Internet speed test.
Understand your connection.

Measure download speed, upload speed and HTTP latency in your browser. Then choose a useful next check for slow Wi-Fi, gaming lag or interrupted calls.

Manual test · Can use up to 1.25 GB plus overheadHow we measure · No account needed

Find the right tool

Go beyond a single speed result. Check a connection problem or plan what you need.

All tools

Bufferbloat Test

Check response time during downloads and uploads.

Video Call Test

Compare your connection with video-call bandwidth needs.

Wi-Fi Room Comparison

Compare the same device in different rooms.

Household Bandwidth

Plan for everyone online at the same time.

Streaming Bitrate

Plan upload capacity and data use for your next stream.

Download Time

Estimate how long your next file transfer will take.

Slow Internet Troubleshooter

Answer four questions to choose your next connection check.

Camera Bandwidth

Estimate camera upload capacity and daily video data.

Monthly Data Usage

Plan remaining GB, daily data budget and hotspot use.

For your next session

Explore game connection tests

Regional connection checks and practical help for the games you play.

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These browser checks use regional HTTP endpoints. They do not measure a live match or establish your ping to an actual game server.

Recent articles

Clear explanations, practical fixes and guides to help make sense of your connection.

View all articles

Find your next answer

Browse guides by topic

Learn the basics, solve a specific problem or choose a better setup for your home.

A clearer view in three steps

Measure first, compare carefully, then choose a useful next step.

How we test

Start when you are ready

Close downloads and pause other heavy traffic. For a useful baseline, test on the device and connection you want to check.

Let both stages finish

The browser warms up and measures downloads and uploads to Cloudflare endpoints. It also records HTTP response timings.

Understand the result

Compare repeated tests under similar conditions. Use the specialist tools to investigate latency under load, Wi-Fi coverage or shared bandwidth.

What do the numbers mean?

Download
How quickly your browser receives data, measured in megabits per second (Mbps).
Upload
How quickly your browser sends data. Calls, backups and live streaming all use upload capacity.
HTTP latency
The response time of HTTP requests to the test endpoint, in milliseconds. It is not an in-game or ICMP ping.
Jitter
Variation between adjacent successful response timings. A fluctuating connection can feel worse than its average suggests.

A good speed depends on the job

There is no single result that suits every household. For one Netflix stream, the service recommends 5 Mbps for 1080p or 15 Mbps for 4K. Allow for other devices using the connection at the same time.

If something feels slow, compare the same device close to the router and in the affected room. Use Ethernet as another comparison where possible. Check background transfers and repeat before changing your plan.

Plan household capacity →Compare Wi-Fi rooms →Find your next check →

A few useful answers

What this test measures, how to compare results and where to look next.

Read our testing method
What is Instant Speed Test?
Instant Speed Test is a free browser tool that measures download and upload throughput, HTTP response time and timing variation using Cloudflare endpoints. It needs no app or account. The result describes the tested network path; other websites, applications and games can perform differently.
How long does a speed test take, and how much data does it use?
The test warms up and measures each transfer direction for about 8–14 seconds, with additional preparation and latency checks. Timing varies with the connection and failed requests. Standard mode can use up to about 1.25 GB of transfer payload. The optional low-data mode limits download and upload payload reservations to 250 MB in total, including warm-up. Small latency probes, connection metadata and network overhead are extra. A fast connection may reach the smaller budget before a complete result is available. Check your allowance before testing. Tests start only when you choose to run them.
Why do speed test results change?
Wi-Fi conditions, other devices, background downloads, congestion, your device and the route to the endpoint can all affect a result. Use the same device and endpoint under similar conditions, let both stages finish and compare several tests rather than treating one number as a guarantee.
Should I test on Wi-Fi or Ethernet?
Use the connection you actually want to assess. Ethernet is a useful comparison when investigating a wireless problem, while Wi-Fi can still reach your plan's throughput if the wireless link has enough capacity. Compare the same device and location where possible, or use the Wi-Fi Room Comparison to investigate differences around your home.
Will this tell me my ping in a game?
The homepage measures HTTP response timings to its test endpoint. It does not measure an actual game server or live match. Our Gamer Hub offers regional HTTP checks and game-specific troubleshooting; confirm actual match latency inside the game or through the publisher's diagnostics.
What internet speed do I need for streaming or video calls?
Requirements depend on the application, quality setting and simultaneous use. Netflix recommends at least 15 Mbps for one 4K stream. Calls need both upload and download capacity; check the Video Call Test for published Zoom, Meet and Teams reference profiles, or use the Household Bandwidth Calculator to plan several activities.
Why might this result differ from another speed test?
Services can use different servers, routes, transfer durations and measurement methods. The browser and device also matter. Compare tests close together under similar conditions and use the methodology page to understand what this test reports and its limits.
How can I report a problem with a test?
Tell us which tool you used, your device and browser, whether you were on Wi-Fi or Ethernet, and what happened. Avoid sending passwords, precise locations or other sensitive details. Contact us below so we can investigate.

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Built by Ahmad Raza · Internet diagnostics, explained clearly.