How many watts are being supplied to the MacBook?

WattageViewer shows in the top MenuBar how many watts of charge are being supplied from the charger to the MacBook.

USB Type-C standard charging is complex and varies depending on the corresponding conditions of the adapter, cable, and device itself.
If the device is not powered properly, it will waste battery power and degrade performance.
Also, powering with higher wattage can charge the battery faster.

You can always see how many watts your device is powered by from the power information residing in the MenuBar.

What’s New

Version 1.2.1

Updated: sleep processing.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

Matthew123124:0 ,

just works

displays accurately

App Privacy

The developer, Keisuke Narita, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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