I have a Magic Mouse on my iMac and I am using BetterTouchTool. How do I increase the scrolling speed? I want to scroll more swiping smaller distances...

I want to set the scrolling more than the maximum possible at the preference values.

Probably I will need some sort of terminal command.


  • Past the maximum at System Preferences ‣ Mouse? – user495470 Apr 19 '11 at 6:00
  • yes! way more than that. – SpaceDog Apr 19 '11 at 7:49
up vote 2 down vote accepted

You can apply a custom acceleration value: defaults write -g com.apple.scrollwheel.scaling -float <float> and relogin.

The scale seems to be roughly linear and to not have any practical maximum limit.

Editing the NSGlobalDomain plist in a text editor: f=~/Library/Preferences/.GlobalPreferences.plist; cp $f $f-; plutil -convert xml1 $f; open -a TextEdit $f

  • that's it. Thanks!!!!!!!!!!!!!!!! – SpaceDog Apr 20 '11 at 8:26
  • I can't believe I found this answer after like 3 hours of googling and it actually worked in 2017........... Unreal. How does BetterTouchTool not have this built in? – Tallboy Mar 14 at 5:39

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