How can I get data on watt-hours power use per day from my MacBook?

Question

There is a voltage readout, so is there a simple utility that will record how many wH / day my Macbook uses?

mardiyah · Accepted Answer

Using the ioreg CLI utility?It is included with Apple's developer tools.In the registry, Apple stores lots of hardware data, including information about your battery usage

nicolaslem · Answer

Solution without any tool: lookup online the battery size of your specific machine, charge to 100%, unplug it and count how long it takes of normal usage to deplete.Nitpick, watt-hour is a unit of energy, not power. Also watt-hour per unit of time is basically a convoluted way to describe watts.

rdegges · Answer

I built a small tool to help with this. It uses ioreg under the hood: https://github.com/rdegges/energy-tracker

kbouck · Answer

if plugged in and at 100% at the start of the measurement, wouldn't a simple kill-a-watt give a decent per-day measurement?if you are looking to get the measurement data in the computer, then this isn't for you...

How can I get data on watt-hours power use per day from my MacBook?

There is a voltage readout, so is there a simple utility that will record how many wH / day my Macbook uses?

Using the ioreg CLI utility?
It is included with Apple's developer tools.
In the registry, Apple stores lots of hardware data, including information about your battery usage

Solution without any tool: lookup online the battery size of your specific machine, charge to 100%, unplug it and count how long it takes of normal usage to deplete.
Nitpick, watt-hour is a unit of energy, not power. Also watt-hour per unit of time is basically a convoluted way to describe watts.

I built a small tool to help with this. It uses ioreg under the hood: https://github.com/rdegges/energy-tracker

if plugged in and at 100% at the start of the measurement, wouldn't a simple kill-a-watt give a decent per-day measurement?
if you are looking to get the measurement data in the computer, then this isn't for you...