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Internet Speed Test

Test your download and upload speed and latency.

Download—Mbps
Upload—Mbps
Latency—ms
Jitter—ms

The test downloads and uploads test data with Cloudflare’s speed-test servers (speed.cloudflare.com), which see your IP address. Results aren’t sent to Cloudflare or kept by UtilSlate.

What you get

  • Download and upload
  • Latency and jitter
  • No results logging

Questions

Why is the result lower than my plan’s speed?

Wi-Fi is often the limit: walls, distance and busy channels cut speed a lot. Other devices using the connection, a VPN, an old router or a busy time of day do too. For the truest number, test on a cable, with nothing else downloading.

What are latency and jitter?

Latency (ping) is how long a small message takes to go and come back; lower is better, and under 50 ms feels instant. Jitter is how much it varies; high jitter makes calls choppy. “Under load” numbers show how much latency rises while the line is busy (bufferbloat).

Who runs the servers?

Cloudflare, with its open-source speed-test library (@cloudflare/speedtest, MIT). The test uses the Cloudflare location nearest to you. UtilSlate doesn’t see or keep your results.

How much data does a test use?

Up to a few hundred megabytes on a fast connection, less on a slow one (large files are skipped when small ones already take long). Keep that in mind on mobile data.

Is it free? Do I need an account?

It is free to use and there is nothing to sign up for. There are no watermarks and no daily limits.

Missing something, or not working as it should? Tell us