10 Free Online Organic Chemistry Courses 2027

Organic chemistry focuses on carbon-based compounds and the reactions that form the basis of life, medicine, and modern materials. While it can be one of the more challenging areas of chemistry, it also provides a deeper understanding of how molecules behave and interact.

You can use free online STEM courses as a way to build these skills without enrolling in a formal program right away. As you explore your options, you’ll find courses that cover everything from basic functional groups and reaction types to advanced synthesis and molecular theory.

Are There Free Online Organic Chemistry Courses?

Yes, there are many free online organic chemistry courses available through universities and open learning platforms. These courses typically cover topics such as molecular structure, reaction mechanisms, and stereochemistry.

Some courses are designed as full sequences (Organic Chemistry I and II), while others focus on specific areas like medicinal chemistry or bio-organic systems. This variety allows you to build your knowledge step by step or focus on specific interests.

Can I Learn Organic Chemistry Online for Free?

Yes, you can learn organic chemistry online for free, especially through platforms like OpenCourseWare, Coursera, edX, and Khan Academy. These courses often include lectures, problem sets, and visual explanations of complex reactions.

While organic chemistry can be challenging, online resources allow you to revisit concepts and practice at your own pace. This makes them especially useful for students preparing for exams or strengthening their understanding.

Best Free & Low-Cost Organic Chemistry Courses

Organic chemistry courses can help you understand molecular structure, chemical reactions, and the behavior of carbon-containing compounds. The options below range from introductory lessons to advanced university course materials and applications in biology and drug discovery.

Most provide free resources for independent study, although certificates and assessed participation may require payment where available. The list also includes an open textbook that can support your coursework or provide a structured reading resource.

1. Khan Academy – Organic Chemistry

Khan Academy’s organic chemistry collection covers structure and bonding, resonance, acids and bases, stereochemistry, and major reaction types. Later units explore aromatic compounds, carbonyl chemistry, amines, and spectroscopy.

The lessons are free and organized into focused units that you can revisit as needed. This makes the collection useful for reviewing difficult concepts alongside a college course or building familiarity before beginning formal study.

2. Yale University (Open Yale Courses) – Freshman Organic Chemistry I

Yale’s Freshman Organic Chemistry I explores molecular structure and reaction mechanisms through theory, experimental evidence, and the development of scientific ideas. It emphasizes understanding how chemists reach conclusions rather than simply memorizing reactions.

The recorded lectures and published course resources are free through Open Yale Courses. Despite the introductory title, the material assumes strong preparation in chemistry and physics, and independent study does not earn Yale credit or a certificate.

3. MIT OpenCourseWare – Organic Chemistry I

MIT’s Organic Chemistry I introduces the principles used to understand the structure and reactivity of organic molecules. Topics include substitution and elimination reactions, carbonyl chemistry, and an introduction to aromatic compounds.

The published course materials are free through MIT OpenCourseWare. You can use them for independent study or review, although the platform does not provide instructor feedback, completion certificates, or academic credit.

4. MIT OpenCourseWare – Organic Chemistry II

Organic Chemistry II builds on introductory knowledge through molecular structure determination, stereochemistry, reaction mechanisms, and synthesis. It also examines applications of organic chemistry in biology, medicine, and industry.

The free materials include lecture notes, problem sets, and exam resources. This course is most appropriate if you already understand introductory organic chemistry and want to practice applying those concepts to more complex problems.

5. Yale University (Open Yale Courses) – Freshman Organic Chemistry II

Yale’s Freshman Organic Chemistry II continues the study of molecular structure and reaction mechanisms introduced in the first course. It offers a second semester of instruction for learners with a strong foundation in chemistry and physics.

Recorded lectures and supporting resources are available free through Open Yale Courses. Studying the two Yale courses in sequence can provide continuity, but neither awards academic credit or a completion certificate through the open-access platform.

6. OpenStax – Organic Chemistry

OpenStax’s Organic Chemistry textbook provides a broad reading resource covering molecular structure, bonding, functional groups, reactions, and spectroscopy. Its chapters can support a traditional organic chemistry sequence or supplement other online instruction.

The textbook is free to read online or download as a PDF, with printed copies available for purchase. It is a textbook rather than an enrolled course, so it does not include instructor assessment, academic credit, or a completion certificate.

7. Kyoto University (OpenCourseWare) – The Chemistry of Life

Kyoto University’s The Chemistry of Life connects chemical structures and reactions with biological questions. Its short lectures explore subjects such as DNA, proteins, peptides, carbohydrates, fluorescent molecules, and chemical tools used to investigate living systems.

The lecture collection is freely available through Kyoto University OpenCourseWare. It provides an applied perspective for learners interested in the relationship between organic chemistry, chemical biology, and biomedical research.

8. Davidson College (edX) – Medicinal Chemistry: The Molecular Basis of Drug Discovery

Davidson College’s medicinal chemistry course examines the chemical foundations of discovering and developing medicines. It connects molecular properties with drug activity, metabolism, and other considerations involved in turning a compound into a useful treatment.

Review the free audit option and its access period when enrolling through edX. A certificate requires the paid track, and the course does not provide Davidson College academic credit.

9. IIT Guwahati (NPTEL) – Bio-Organic Chemistry

IIT Guwahati’s Bio-Organic Chemistry course explores the intersection of organic chemistry, biochemistry, medicinal chemistry, and spectroscopy. Topics include amino acids, peptides, enzymes, nucleic acids, and chemical approaches connected with drug discovery.

The archived NPTEL materials are freely available for independent study and include written instructional resources. This option is better suited to learners with some chemistry background who want to examine reactions and molecular behavior in biological systems.

10. MIT OpenCourseWare – Advanced Organic Chemistry

Advanced Organic Chemistry applies structural and theoretical ideas to the study of reaction mechanisms. Topics include conformational and stereoelectronic effects, reaction dynamics, isotope effects, pericyclic and photochemical reactions, and reactive intermediates.

MIT provides the published lecture notes, problem sets, and exams free through OpenCourseWare. The material is intended for learners with substantial prior organic chemistry knowledge and does not include a certificate or academic credit.

How We Rank Courses

We evaluate organic chemistry courses based on how clearly they explain complex concepts and support step-by-step learning. The goal is to highlight programs that build understanding progressively, from foundational ideas to advanced applications.

• Affordability: We prioritize courses that are free or offer strong value with optional certification.
• Online availability: Courses must be accessible and flexible for self-paced learning.
• Course provider reputation: We consider universities and platforms known for strong science and pre-med education.

What You’ll Learn in an Organic Chemistry Course

Organic chemistry courses focus on how carbon-based molecules are structured, how they react, and how those reactions can be predicted. Many programs emphasize both conceptual understanding and pattern recognition, which are key to mastering the subject.

You may gain skills such as:

• identifying functional groups and molecular structures
• understanding reaction mechanisms like substitution and elimination
• analyzing stereochemistry and three-dimensional molecular behavior
• predicting reaction outcomes based on structure and conditions
• interpreting reaction diagrams and chemical notation
• connecting organic chemistry to biological and medical systems

Many students build these skills through self-paced online courses, which allows them to revisit challenging topics and reinforce their understanding over time.

How Much Do Organic Chemistry Courses Cost?

Many organic chemistry courses are available for free when you audit them through platforms like edX, Coursera, and OpenCourseWare. These options typically include full access to lectures and course materials.

If you choose to earn a verified certificate, costs can vary depending on the provider and course structure. Some learners use free online classes to strengthen their academic foundation before advancing.

Who Should Consider Free Organic Chemistry Courses?

These courses are a great fit if you’re studying chemistry, preparing for exams, or pursuing a career in healthcare, pharmacy, or research. Organic chemistry is often a required subject for pre-med and science-related degree programs.

They’re also useful for learners who want to deepen their understanding of how molecules behave in real-world systems. Building a strong foundation in organic chemistry can support a wide range of scientific and technical fields.

Career Outlook for Organic Chemistry Learners

Organic chemistry plays a central role in many industries, including pharmaceuticals, biotechnology, and materials science. Professionals in these fields rely on a strong understanding of molecular structure and reactivity.

While free courses are typically just a starting point, they can help you prepare for advanced study and career pathways. With further education, organic chemistry can lead to opportunities in research, healthcare, and industrial applications.

How to Choose the Right Free Organic Chemistry Course

Choosing the right course depends on your current knowledge level and learning goals. Because organic chemistry builds on itself, it’s important to take a structured and thoughtful approach.

Start With Foundational Concepts

Look for courses that cover structure, bonding, and basic reaction types before moving into more complex mechanisms. These fundamentals are essential for understanding everything that follows.

Focus on Reaction Patterns

Organic chemistry often relies on recognizing patterns rather than memorizing isolated facts. Courses that emphasize mechanisms and reasoning can make the subject easier to manage.

Progress Gradually to Advanced Topics

As your understanding improves, you can move into areas like synthesis, stereochemistry, and molecular theory. Building your knowledge step by step helps prevent confusion and frustration.

FAQs About Free Online Organic Chemistry Courses

A few more questions come up once you start thinking about how to actually tackle this subject. Here's what else is worth understanding.

Can These Courses Help You Prepare for the MCAT or Other Pre-Med Exams?

Courses like MIT's Organic Chemistry I and II cover much of the reaction mechanism content the MCAT tests, making them a useful supplement to dedicated MCAT prep materials. Since the MCAT draws from a specific blend of topics, pairing these courses with a prep book or practice exams tends to work better than relying on the courses alone.

Do You Need to Work Through Practice Problems, or Is Watching Lectures Enough?

Working through practice problems, like those built into Khan Academy's Organic Chemistry: Introduction, matters more for mastering the subject than passively watching lecture videos from courses like MIT's OpenCourseWare series. Organic chemistry rewards pattern recognition that only comes from repeatedly solving mechanism and synthesis problems yourself.

Can These Courses Help If You're Retaking Organic Chemistry After Struggling With It in Class?

Courses like the University of Manchester's Foundations of Organic Chemistry can work well for a second pass at the material, especially since a different instructor's explanation sometimes clicks where a previous one didn't. Pairing a fresh course with your old notes and practice problems can help you identify exactly which concepts tripped you up the first time around.

Do These Courses Cover Lab Techniques, or Just the Theory?

Most courses on this list, including edX's Chemistry of Carbon-Based Compounds, focus on theory and mechanisms rather than hands-on lab technique, since lab skills are difficult to teach without in-person equipment. For the lab side of organic chemistry, you'll generally need an in-person course or a program that includes a supervised lab component.

Can Organic Chemistry Knowledge Apply to a Nutrition or Cosmetics-Related Career?

Courses like Davidson College's Medicinal Chemistry connect organic chemistry concepts to how compounds interact with the body, which applies directly to nutrition-related and cosmetic formulation careers. Understanding molecular structure at this level can help you evaluate product claims or ingredient interactions more critically in either field.

Discover Affordable Science and STEM Programs

Free courses are a solid way to build real organic chemistry knowledge before committing to a formal program. When you're ready for more structured training, Learn.org can help you compare programs and connect with schools that match your goals.