Total mass of all books39 billion kg
26 billionTextbooks
780 billionRubber ducks
About 0.3 kg per book average, 130 million books
Photo from Wikimedia Commons
All Books Ever Written
An estimated 130 million unique titles across all of human history/Collective & Conceptual
Google estimated in 2010 that approximately 130 million unique book titles had been published throughout history, and the number has grown since. If printed and stacked, they would form a tower about 3,250 km tall, reaching well into outer space. The total data contained in all those books is roughly 480 terabytes, which sounds like a lot until you realize a single modern data center dwarfs it easily. Humanity's entire written literary output fits on a rack of hard drives.
Measurements
Stacked height3.3 million m
1.6 millionDoor heights
3.6 millionTennis nets
13.2 millioniPad heights
About 3,250 km if all stacked
Total data content528 trillion B
528 trillionASCII characters
21,120Blu-ray discs
2,063iPhone storages
About 480 terabytes of text
Time to read all (one person)5.7 trillion s
15.4Ice ages
100Great Wall constructions
18.9 trillionBlinks of an eye
About 180,000 years at 8 hours per day
Average book mass3 tenths kg
6.7 hundredthsAdult house cats
3.8 millionthsSpace Shuttle orbiters
2.7 thousandthsManhole covers