TL;DR
In May 2026, Google.com was the most visited website with ~87.5 billion monthly visits, followed by YouTube, Facebook, Wikipedia, and Instagram.
Similarweb Ranking (2026-05, approximate visits)
| Rank | Site | Monthly Visits (approx.) |
|---|---|---|
| 1 | Google.com | 87.5B |
| 2 | YouTube.com | 40–50B |
| 3 | Facebook.com | 15–20B |
| 4 | Wikipedia.org | 13–15B |
| 5 | Instagram.com | 12–15B |
| 6 | X.com | 10–12B |
| 7 | TikTok.com | 10–12B |
| 8 | Amazon.com | 7–9B |
Takeaways
- Google's lead is extreme — roughly double the #2 site.
- Content (YouTube/Wikipedia) and social (FB/IG/X/TikTok) dominate.
- Rankings shift monthly; see Similarweb for the full top 100.
Sources
- Similarweb: Top 100 Most Visited Websites Worldwide (2026-05)