macOS 14.0+ Ready

Know exactly what your Mac is drawing.

Stop guessing your battery health. WhatWattage is the lightweight, 100% private menu bar app that tracks your real-time power consumption and charging status.

Available on the Mac App Store • Just 813 KB

100W
Full in 2h 32m
Charging at 100W
27%
Battery Info
Battery: 27%
Power Source: AC Power
Charger Connected
Charging at: 100W
Time to Full: 2h 32m
Menu Bar Display
HUD
Launch at Login
Quit ⌘Q

Everything you need. Nothing you don't.

Native performance and minimal system impact.

Real-time Power Monitoring

Track your Mac's exact power consumption and charging status instantly, right from your menu bar.

Battery Health Insights

Get detailed information about your battery's actual health, capacity, and performance degradation over time.

Power Status Notifications

Receive subtle, helpful notifications about critical power states, charging completion, and unplug events.

100% Private & Efficient

Zero data collected. No external servers. Weighing in at under 1MB, it stays entirely out of your way.

Take control of your battery.

Join the Mac users optimizing their battery life with WhatWattage. It's completely free.

Get it on Mac App Store