Internet speed test

How do I test my internet speed?

Choose Quick or Longer, then press Start speed test. The large number shows download speed in Mbps; upload, latency and jitter appear below. The longer option takes more samples on fast connections. It starts only when you choose, stops when you leave or hide the page, and has a two-minute limit.

How much data does an internet speed test use?

Quick uses up to 80 MB of test data. Longer uses up to 200 MB, so use an unmetered connection where possible. Network overhead is additional. Slower connections may finish with less data. All generated test transfers go directly between your browser and Cloudflare, without uploading your personal files. Read the privacy details.

Why is my result different from Speedtest.net or Fast.com?

Different services use different servers and test methods. This test measures transfers to Cloudflare. Other tests may use multiple connections to measure available capacity. Results can differ even on the same device, and no single test guarantees the speed of every website or download. A lower result alone does not prove a problem with your broadband.

Read about Cloudflare’s measurement method and how Speedtest calculates results.

Why did my speed test stop early?

The test service may be busy, blocked or limiting requests. This is not proof of a broadband fault. Available readings are labelled Partial estimate and can still be copied or included in a support report; missing measurements remain unavailable. If the service supplies a waiting time, we respect it without retrying automatically.

What do Mbps, latency and jitter mean?

Mbps is megabits per second: download is receiving data, and upload is sending it. Latency measures how long a request takes to respond; jitter describes variation between response times. These are browser HTTP timings, rather than ICMP ping. Low, consistent response times can help calls and games.

How can I get a more useful speed-test result?

Pause other transfers and streaming, then test on the same device and connection when comparing results. Try Ethernet if available, or move closer to the router. VPNs, browser extensions, Wi-Fi signal and other users can change the result. Avoid running two speed tests at the same time.

Could Mesh WiFi make my internet faster?

If weak Wi-Fi coverage is the problem, a mesh system may help. Compare the NETGEAR Orbi 970 Mesh WiFi system (opens in a new tab) (affiliate link) after checking router placement and wired options. New equipment cannot raise your broadband plan’s limit or fix an ISP outage. We may earn a commission from qualifying purchases.

How can I check for lag spikes or connection dropouts?

Use the connection stability monitor for a longer view of response times and missed checks. Use the download time calculator to estimate a transfer from its file size and speed.

Can I share my results with technical support?

Use Copy speed-test results or Use in support report after a run. Partial estimates are clearly labelled. You can also open the browser and device checker for a report that also includes your browser and operating system. No app download or account is needed. Use Share this tool to send someone this page; it shares the page link rather than your measurements.