3Blue1Brown’s most viewed videos of 2018
Lifetime totals, not views in this range.
Snapshot from 19 Oct 2026.
- Rank 1:

But what is the Fourier Transform? A visual introduction.
- Rank 2:

But why is a sphere's surface area four times its shadow?
- Rank 3:

Why is pi here? And why is it squared? A geometric answer to the Basel problem
- Rank 4:

Visualizing the 4d numbers Quaternions
- Rank 5:

Divergence and curl: The language of Maxwell's equations, fluid flow, and more
- Rank 6:

The other way to visualize derivatives | Chapter 12, Essence of calculus
- Rank 7:

Why slicing a cone gives an ellipse (beautiful proof)
- Rank 8:

The more general uncertainty principle, regarding Fourier transforms
- Rank 9:

How pi was almost 6.283185...
- Rank 10:

Quaternions and 3d rotation, explained interactively
- Rank 11:

Winding numbers and domain coloring
- Rank 12:

Using topology for discrete problems | The Borsuk-Ulam theorem and stolen necklaces
- Rank 13:

The Wallis product for pi, proved geometrically
- Rank 14:

Q&A with Grant Sanderson (3blue1brown)
- Rank 15:

Why 5/3 is a fundamental constant for turbulence
- Rank 16:

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