Chrome on the Mac uses less battery than Safari

It’s one of the most pervasive common wisdoms shared all over the web, no matter where you go – it’s one of those things everybody seems to universally agree on: Chrome will absolutely devastate your battery life on the Mac, and you should really be using Safari, because Apple’s special integration magic pixie dust sprinkles ensures Safari sips instead of gulps electricity. Whether you read random forum posters, Apple PR spokespeople, or Apple’s own executives on stage during events, this wisdom is hard to escape.

Is it true, though?

Well, Matt Birchler decided to do something entirely revolutionary and entirely unheard of: a benchmark. Back in the olden days of yore, we would run benchmarks to test the claims from companies and their PR departments, and Birchler decided to dust off this old technique and develop a routine to put the Chrome battery claims to the test. After 3 days of continuous testing on a freshly installed 14” MacBook Pro with an M2 Pro processor and 16 GB RAM running the latest stable releases of both browsers, Birchler came to some interesting conclusions.

In my 3-hour tests, Safari consumed 18.67% of my battery each time on average, and Chrome averaged 17.33% battery drain. That works out to about 9% less battery drain from Chrome than Safari. Yes, you read that right, I found Chrome was easier on my battery than Safari.

While I did experience some variability in each 3 hour test run, Chrome came out on top in 5 of the 6 direct comparisons.
↫ Matt Birchler

His methodology seems quite sound and a good representation of what most laptop users will use their browser for: YouTube, social media, a few news websites, and editing a Google Doc, in a 20 minute loop that was repeated for three hours per test. Multiple of these three hour tests were then ran to counter variability. I highly doubt using different websites will radically change the results, but I obviously am curious to see a similar test ran on Windows and Linux, x86 and ARM, for a more complete picture that goes beyond just the Mac.

Conventional wisdom is sometimes wrong, and I think we have a classic case of that here. While there may have been a time in the past where Chrome on the Mac devastated battery life, it seems Chrome and Chromium engineers have closed the gap, and in some cases even beat Safari. Now, this doesn’t mean everybody should rush and switch to Chrome, since there are countless other reasons to use Safari over Chrome other than supposed battery life advantages.

With Apple PR arguing that alternative browser engines should not be allowed on iOS because Chrome would devastate iOS’ battery life, tests like these are more important than ever, and I hope we’re going to see more of them. Tech media always just seems to copy/paste whatever manufacturers and corporations claim without so much as a hint of skepticism, and this benchmark highlights the dangers of doing so, in case you didn’t already know believing corporations was a terribly idea.