Disk Speed Test is an easy to use tool to quickly measure and certify your disk performance for working with high quality video! Simply click the start button and Disk Speed Test will write test your disk using large blocks of data, and then display the result. Disk Speed Test will continue to test writes and reads from your disk so you can evaluate both performance and readability over time.

What's New

Version 3.2

Improve UI to support faster disks.

Ratings and Reviews

2.9 out of 5
45 Ratings
45 Ratings
Jekyll59 ,

Works fine with High Sierra

Was uncertain about using this given some of other reviews suggesting problem using this with High Sierra. But I installed it on a 2016 MacBook Pro and a 2013 Mac Pro both running High Sierra and the software imnstalled and ran fine on both. Gives easy and clear results. Very helpful when running a range of drives connected to both Macs.

Rjg18 ,

Crashes from App Store, Runs from Launchpad

The ‘crash on startup’ bug that others are reporting seems to be limited to launching from within the App Store screen. If you click the ‘Open’ button from the App Store window after downloading then the App crashes instantly without any warning or eror message. If you close the App Store window, open Launchpad, and run it from there, it seems to run fine.

S_Ellis ,

Drive broke after using this

I would be very wary when using this.

I used this on a brand new WD HDD. It had been working fine for the week since I had started using it, but the next time I used it after trying to find out the disk speed using Blackmagic Disk Speed Test, it failed. It won’t read or write, nor will it mount to my Mac or a Windows PC. I have tried various methods butthe drive is still dead with a lot of GoPro footage on it. RIP.

I see it as too much of a coincidence, so be warned, do not run this on a drive with anything important on it.


Blackmagic Design Inc
16.8 MB
OS X 10.10.0 or later, 64-bit processor
Age Rating
Rated 4+
© Blackmagic Design Inc. 2018


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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