Free macOS app
MiniWatt
One number in your menu bar. Watts in while you're charging, watts out while you're not. Nothing else.
MiniWatt sitting in the menu bar while charging at 65 W.
65W
Charging watts
See exactly how many watts your charger is delivering, in real time — useful for checking whether a USB-C port or cable can actually keep up.
−12W
Consumption watts
Unplug and MiniWatt switches to negative watts — your Mac's actual power draw straight from the battery.
1 number
Nothing else
No graphs, no settings to dig through. The menu holds just the basics: charge state, adapter, battery health and cycle count.
Free
No account, no cost
Download and use it. No sign-up, no subscription, no tracking. The app never makes a network connection.
Requires macOS 12 or later and a Mac with a built-in battery (MacBook Air or MacBook Pro).