Hacker News Reader

For those unfamiliar with 12.9-Inch iPad Pro weight units: That's almost 13 Tennis Balls. (Yep, the iPad Pro weighs about 1 Tennis Ball per inch)

What a useless measure. For the civilized among us, that's 0.00000026 olympic sized swimming pools.

What's that in football fields?

About 0.000000685 football fields.

It's also 1.39-1.5 NFL regulation footballs.