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Calculus

The language of change: limits, derivatives, integrals and series, all the way to calculus in several variables.

23 free sites · 21 in English.

1. Khan Academy – Calculus 1 English khanacademy.org

   Limits and derivatives with practice.

   For: Middle & high schoolCollege

2. Khan Academy – Calculus 2 English khanacademy.org

   Integrals, applications and series.

   For: Middle & high schoolCollege

3. Khan Academy – AP Calculus AB English khanacademy.org

   Full AP course with practice exams.

   For: Middle & high schoolCollege

4. Khan Academy – Multivariable calculus English khanacademy.org

   Partial derivatives, multiple integrals, vector calculus.

   For: Middle & high schoolCollege

5. OpenStax – Calculus Volume 1 English openstax.org

   Free college textbook.

   For: College

6. OpenStax – Calculus Volume 2 English openstax.org

   Integration, series and parametric equations.

   For: College

7. OpenStax – Calculus Volume 3 English openstax.org

   Multivariable and vector calculus.

   For: College

8. 3Blue1Brown – Essence of Calculus English 3blue1brown.com

   Beautiful visual intuition for calculus.

   For: Middle & high schoolCollegeGeneral public

9. MIT OCW – 18.01 Single Variable Calculus English ocw.mit.edu

   Complete MIT course with videos and exams.

   For: College

10. MIT OCW – 18.02 Multivariable Calculus English ocw.mit.edu

    Complete MIT course.

    For: College

11. Paul’s Online Notes – Calculus I English tutorial.math.lamar.edu

    Notes and exercises (also Calc II and III).

    For: Middle & high schoolCollege

12. Professor Leonard (YouTube) English youtube.com

    Full Calculus I, II and III lectures.

    For: College

13. The Organic Chemistry Tutor (YouTube) English youtube.com

    Hundreds of calculus walkthroughs.

    For: Middle & high schoolCollege

14. Active Calculus English activecalculus.org

    Open textbook built around active learning.

    For: Middle & high schoolCollege

15. APEX Calculus English apexcalculus.com

    Free, open calculus textbook.

    For: Middle & high schoolCollege

16. CLP Calculus (UBC) English personal.math.ubc.ca

    Textbooks and problem books from UBC.

    For: Middle & high schoolCollege

17. Derivative Calculator English derivative-calculator.net

    Computes derivatives and shows the steps.

    For: Middle & high schoolCollege

18. Integral Calculator English integral-calculator.com

    Computes integrals and shows the steps.

    For: Middle & high schoolCollege

19. Desmos Multilingual desmos.com

    Visualize limits, derivatives and areas.

    For: Middle & high schoolCollege

20. SymPy Multilingual sympy.org

    Free, open-source computer algebra in Python: limits, derivatives, integrals.

    For: Middle & high schoolCollege

21. Calculus Made Easy (Project Gutenberg) English gutenberg.org

    Silvanus Thompson’s classic, free.

    For: Middle & high schoolCollege

22. Wikibooks – Calculus English en.wikibooks.org

    Free, open textbook.

    For: Middle & high schoolCollege

23. Better Explained – Calculus English betterexplained.com

    Intuition-first calculus articles.

    For: Middle & high schoolCollege