Question 1

Why is 100MB the most popular test file size?

Accepted Answer

100MB is large enough to give meaningful speed measurements but small enough to download in under a minute on most connections. It's the standard size for upload limit testing in web applications.

Question 2

How long does it take to download 100MB?

Accepted Answer

On a 100 Mbps connection: ~8 seconds. On 50 Mbps: ~16 seconds. On 10 Mbps: ~80 seconds.

Question 3

Can I use this to test my CDN performance?

Accepted Answer

Yes. Download from different geographic locations and compare speeds. Our file is served from a global CDN, so you can also compare your CDN against ours.

100MB Test File Download — Speed Test

Other test file sizes

Frequently Asked Questions