Yes. 3Blue1Brown is free and does not ask you to register or hand over an email address before you can use it.

How long does 3Blue1Brown take?

Clear your evening. We warned you. We file it under "Rabbit hole" — grant Sanderson's maths lessons, with the visuals inline.

Does 3Blue1Brown work on a phone?

Yes. 3Blue1Brown works on a phone as well as it does on a laptop.

Explain Everything

3Blue1Brown

Grant Sanderson's maths lessons, with the visuals inline

Visit 3blue1brown.com More Explain Everything

3blue1brown.com

Rabbit hole · Works anywhere

Free, no sign-up · online since 2015

What 3Blue1Brown actually is

The written home of the animated maths series, where each lesson pairs the video with the same explanation as an illustrated article. Topics run from linear algebra and calculus through Fourier series, neural networks and probability, all drawn with the animation engine he wrote for the purpose.

Why it is worth your time

The linear algebra series does one thing no textbook does: it shows the grid itself deforming, after which a matrix stops being a table of numbers.

Common questions

Is 3Blue1Brown free?: Yes. 3Blue1Brown is free and does not ask you to register or hand over an email address before you can use it.
How long does 3Blue1Brown take?: Clear your evening. We warned you. We file it under "Rabbit hole" — grant Sanderson's maths lessons, with the visuals inline.
Does 3Blue1Brown work on a phone?: Yes. 3Blue1Brown works on a phone as well as it does on a laptop.
What kind of site is 3Blue1Brown?: We list it under Explain Everything — hard things, made suddenly obvious. The linear algebra series does one thing no textbook does: it shows the grid itself deforming, after which a matrix stops being a table of numbers.

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Explain Everything

3Blue1Brown

Grant Sanderson's maths lessons, with the visuals inline

Visit 3blue1brown.com More Explain Everything

3blue1brown.com

Rabbit hole · Works anywhere

Free, no sign-up · online since 2015

What 3Blue1Brown actually is

Why it is worth your time

The linear algebra series does one thing no textbook does: it shows the grid itself deforming, after which a matrix stops being a table of numbers.

Common questions

Is 3Blue1Brown free?: Yes. 3Blue1Brown is free and does not ask you to register or hand over an email address before you can use it.
How long does 3Blue1Brown take?: Clear your evening. We warned you. We file it under "Rabbit hole" — grant Sanderson's maths lessons, with the visuals inline.
Does 3Blue1Brown work on a phone?: Yes. 3Blue1Brown works on a phone as well as it does on a laptop.
What kind of site is 3Blue1Brown?: We list it under Explain Everything — hard things, made suddenly obvious. The linear algebra series does one thing no textbook does: it shows the grid itself deforming, after which a matrix stops being a table of numbers.