Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
17,500,000,000
views
How to estimate it
Fermi’s official “Napkin math”
There isn't a great way to fermi our way to this but we can pretty easily get a good guess if we know a few things. It's famously the most viewed video on YouTube. Tons of popular music videos get several billion views. I remember APT. by ROSÉ and Bruno Mars had three billion. So how many MORE views does the most viewed video ever have? If it's 5×, you get 15 billion.
- Popular music video
- ~3,000,000,000
- How many times more
- × 5
- 3B × 5
- ≈ 15,000,000,000
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Guinness World Records, 4 February 2026
- 16.64 billion
- Wikipedia's most-viewed list, 30 August 2026
- 17.28 billion
- About 3 million a day since then, to late October
- + ≈ 0.18 billion
- ≈
- 17,500,000,000
Reference cited by Fermi: Guinness World Records · YouTube
How close was your guess?
Your comparison will appear here.
Compare by ratio: divide the larger number by the smaller one. The closer to 1×, the better.