10,000+
Courses
Free
Audit access
4.4
Luctura rating
Luctura rating — 4.4/5
Best for: maths and science foundations, SAT/GMAT prep, K-12 learners, knowledge gap filling.
Not for: professional credentials, creative skills, career-change certificates, advanced technical depth.
Key strengths
- 100% free — no premium tier, no upsell, no subscription
- Mastery-based learning with instant feedback on every exercise
- Best free maths and science curriculum from arithmetic through calculus
One caveat
No certificates and no structured career paths. Designed for foundational learning, not professional credentialling.
Features
✓ Mobile app✗ Offline downloads✓ Free audit✗ Business plan✗ Certificates✗ Employer recognised✗ Degrees✓ Interactive coding
Content focus
MathsScienceComputingHumanitiesEconomicsTest Prep
Pricing
| Option | Cost |
|---|---|
| Free audit | Available on most courses |
Frequently asked questions
How much does Khan Academy cost?
Khan Academy costs a free audit option.
Is Khan Academy worth it?
Khan Academy is worth it primarily for maths and science foundations. 100% free — no premium tier, no upsell, no subscription The main caveat: No certificates and no structured career paths. Designed for foundational learning, not professional credentialling.
Does Khan Academy offer certificates?
No — Khan Academy does not issue certificates of completion. The platform is built around the content itself, not credentialling.
Can I use Khan Academy for free?
Yes — Khan Academy lets you audit courses for free.
Who should avoid Khan Academy?
Khan Academy is not well suited for professional credentials, creative skills. If that describes your goals, consider alternative platforms better matched to those needs.