> Internet speed test
> Source: https://developit.fi/en/speed-test/
> Full site in machine-readable form: https://developit.fi/llms-full.txt

# Internet speed test
Measure your connection's speed and latency right in the browser. No installation, no sign-in.

## Measure your connection

–
Mbit/s

Ready

- Latency
- Download
- Upload

Download
 – Mbit/s 

Upload
 – Mbit/s 

Latency
 – ms 

Jitter
 – ms 

 Shows how much latency grows when the connection is fully in use. A large increase shows in video calls when someone else is downloading at the same time. 

 

Speed test on your home screen

Tap the browser's Share button and choose Add to Home Screen. After that the test is one tap away on your phone, named Speed test.

 

The test needs JavaScript. You can use Cloudflare's own test directly: speed.cloudflare.com 

### What is the connection good for?
- Video calls – Weights latency, jitter and upload
- Streaming – Weights download speed
- Gaming – Weights latency and jitter

### Previous tests on this device

Stored only in this browser. Compare for example Wi-Fi and cable, or morning and evening. 

The quick test transfers a few megabytes. The full test transfers test files to Cloudflare's nearest data centre, hundreds of megabytes on a fast connection, worth noting on mobile data. The result is not sent anywhere.

## What do the numbers mean?
- Download is how fast your computer receives data. It shows in video playback, updates and files opened from the cloud.
- Upload is how fast your computer sends data. It shows in video calls, backups and sending large attachments.
- Latency is the time one packet takes from your computer to the server and back. Low latency keeps remote sessions and video calls smooth.
- Jitter is how steady the latency is. High jitter is heard as choppy audio and seen as stuttering video.

The ratings for video calls, streaming and gaming are calculated with Cloudflare's AIM methodology, which weights the numbers that matter most for each use.

## How is the test done?
Your browser downloads and uploads test files to Cloudflare's nearest data centre. Cloudflare is the same service this website runs on, so the test opens no connection to any new party. The result stays in your browser: it is not sent to us or to Cloudflare.

If you are in touch with our support, press Copy result after the test and paste it into your message. It tells us right away whether the problem is the connection or something else.