Best free courses · College math
Best free college math courses on YouTube, ranked by total hours
Updated 2026-10-05 · 13 courses · totals are live
The college math sequence is all on YouTube for free: pre-calculus, calculus 1, 2 and 3, linear algebra, differential equations and statistics, taught by MIT professors in their lecture halls and by Professor Leonard at his whiteboard. Each of these is a full semester, and a semester of math is two things, the lectures and the hours of problems after them. The total below is the first of the two.
The numbers next to each course are live totals from the playlist itself. Click a course to see every lecture, tick off what you've watched, and get a finish date that leaves room for practice.
From 3h 1m (Essence of linear algebra) to 3d 3h 24m (Calculus 3 — Professor Leonard).
| # | Course | Videos | Total | At 1.5× |
|---|---|---|---|---|
| 1 | Calculus 3 — Professor Leonard Vectors, partial derivatives, multiple integrals and vector fields, up to Green's theorem, the divergence theorem and Stokes' theorem. |
34 | 3d 3h 24m | 2d 2h 16m |
| 2 | College Algebra and Trigonometry (pre-calculus) — Professor Leonard Full-length classroom lectures with every step on the board. Start here if calculus keeps tripping over the algebra. |
115 | 3d 3h 7m | 2d 2h 5m |
| 3 | Calculus 2 — Professor Leonard Integration techniques, sequences and series, parametric equations and polar coordinates: the semester most students find hardest. |
27 | 2d 2h 3m | 1d 9h 22m |
| 4 | Calculus 1 — Professor Leonard Limits, derivatives and integrals, taught slowly and completely, with worked examples for everything. The usual answer when someone asks which calculus course to watch. |
32 | 1d 20h 57m | 1d 5h 58m |
| 5 | Differential Equations — Professor Leonard Solving first- and higher-order equations, in the same worked-example style as his calculus series. |
43 | 1d 15h 39m | 1d 2h 26m |
| 6 | Statistics — Professor Leonard Describing data, probability, the binomial and normal distributions, confidence intervals and hypothesis tests. Introductory statistics as it's taught in a college classroom. |
28 | 1d 7h 56m | 21h 17m |
| 7 | MIT 18.01 Single Variable Calculus (Fall 2006) — David Jerison MIT's first-semester calculus. Quicker and more conceptual than a typical college course; a good second pass after Calculus 1. |
35 | 1d 4h 32m | 19h 1m |
| 8 | MIT 18.02 Multivariable Calculus (Fall 2007) — Denis Auroux Vectors and matrices, partial derivatives, double and triple integrals, and vector calculus in two and three dimensions. |
35 | 1d 4h 20m | 18h 53m |
| 9 | MIT 18.065 Matrix Methods in Data Analysis, Signal Processing, and Machine Learning (2018) — Gilbert Strang Strang's sequel to 18.06: the linear algebra behind data science and deep learning, from the SVD to neural networks. |
36 | 1d 4h 9m | 18h 46m |
| 10 | MIT 18.06 Linear Algebra — Gilbert Strang The linear algebra course, and the lectures much of the internet learned the subject from. Strang's 18.06 videos were recorded in 1999 and have aged better than almost anything else on YouTube. |
36 | 1d 4h | 18h 40m |
| 11 | Linear Algebra (Full Course) · Linear Algebra (full course) — Dr. Trefor Bazett A complete linear algebra course in short videos, at a gentler pace than 18.06. Easy to fit into a busy week. |
84 | 10h 50m | 7h 14m |
| 12 | Essence of calculus — 3Blue1Brown Derivatives, integrals and Taylor series drawn rather than derived. Watch it before or alongside a calculus course, not instead of one. |
12 | 3h 11m | 2h 7m |
| 13 | Essence of linear algebra · Essence of linear algebra — 3Blue1Brown Short animated chapters on what vectors, matrices, determinants and eigenvectors mean as pictures. A few hours that make every linear algebra course above easier. |
16 | 3h 1m | 2h 1m |
Totals count available videos only and update as the playlists change. Private or deleted videos are excluded. Compare the top 5 side by side →
How to choose
- Taking the course at college right now? Professor Leonard's lectures are numbered by textbook section, so they're easy to match to the class you're in.
- Learning on your own? Watch the 3Blue1Brown series first for the intuition, then do a full course with problems.
- Want the MIT version? 18.01 and 18.02 move faster than Professor Leonard and assume you're doing the problem sets from MIT OpenCourseWare alongside them.
- Linear algebra for machine learning? 18.06, then 18.065, then the free machine learning courses.
- Studying for JEE or GATE? Those exams have their own lists: JEE and GATE CSE.
The hours nobody counts
A math lecture is the shorter half of the work. Plan on at least as long again for problems, and give the planner that number rather than the playlist's runtime. Open a course here, set your weekly hours, and it gives you a date; tick lectures as you go and the remaining time updates. The guide to finishing before an exam shows how to work back from a test date, and 1.5× is usually too fast for math you have to write down.