Apple (NASDAQ:AAPL) has a weird way of bragging about its wearables business. Instead of giving investors any type of straightforward data metric like unit sales or revenue (or both), the company instead notes when it reaches various milestones relative to the Fortune 500. It's a roundabout way to illustrate growth in the wearables segment, which primarily consists of Apple Watch and AirPods. Apple might as well compare the segment to the distance to the moon, which would take a comparable amount of legwork to figure out what the company is trying to convey.

The comparisons refer to wearables revenue on a trailing-12-month (TTM) basis. Here's how to make sense of the disclosures.

Person stretching while wearing Apple Watch Series 4

Apple's wearables disclosures require some mental gymnastics. Image source: Apple.

Fortune 200 and counting

The most recent reference was just last month, when Apple said its wearables business was "approaching" the size of a Fortune 200 company. Fortune has not released its 2019 list, but No. 200 on the 2018 Fortune 500 was Aramark, with $14.6 billion in sales. Here's how that compares with the other instances when Apple has equated its wearables business to the size of a company in the ranking:

Quarter

Comparison

Revenue Threshold

Q1 2017

Fortune 500

$5.1 billion 

Q3 2017

Fortune 400

$6.7 billion

Q1 2018

Fortune 300

$9.3 billion

Q4 2018

Fortune 200

$14.6 billion

Data sources: Apple and Fortune. Calendar quarters shown.

Apple Watch was launched in Q2 2015, which marked the beginning of Apple's wearables business. Here's how that looks over time:

Chart showing trailing-12-month wearables revenue

Data sources: Apple and Fortune. Chart by author.

Just for fun, here's that same chart using a scale comparing wearables revenue to the average distance to the moon (approximately 238,900 miles), since we're discussing ridiculous comparisons. Wearables revenue has now grown from around 21,300 distances to the moon to over 61,000 distances to the moon. Impressive growth!

Chart showing wearables revenue relative to distances to the moon

Data sources: Apple, Fortune, NASA, and author's calculations. Chart by author.

If wearables are "approaching" $14.6 billion in sales, that would represent just 6% of the $261 billion in revenue that Apple did in 2018. While the growth is promising, wearables is still a drop in the bucket relative to the iPhone segment.

Check out the latest Apple earnings call transcript.

Next stop: $30 billion

One can only assume that the next milestone that Apple brags about will be when the wearables business hits Fortune 100 territory. For 2018, that was USAA, with $30 billion in revenue (nearly 125,600 distances to the moon), or more than twice the current size of the wearables business.

Hopefully, the Mac maker won't resort to even more ridiculous comparisons, like when wearables potentially reaches the size of a Fortune 146 company.

If only there were an easier solution.