By Quick answer: Which online certifications are completely free in 2027?
- Tech — Harvard CS50 and CS50 AI, Kaggle Learn and freeCodeCamp: free courses, free certificates.
- AI basics — Elements of AI from the University of Helsinki, free from first lesson to certificate.
- Marketing — HubSpot Academy, Google Skillshop and Semrush Academy, all free to learn and certify.
- Watch for 'free to audit' — on many platforms the course is free but the certificate isn't; none of those are on this list.
Key takeaways
- Free and respected aren't opposites: Harvard, Google, HubSpot and Kaggle issue free certificates employers recognise.
- Free certificates prove learning, not proctored mastery; pair them with a project or one paid exam where jobs require it.
- Avoid 'free' courses that charge for the certificate at the end; check before you start.
Search "free certification" and most results are free to start and paid to finish: the lessons cost nothing, then the certificate costs $49 or more. This list is strict. Every pick lets you learn and earn the credential without paying, as of November 2026, and every issuer is one a recruiter will recognise: Harvard, Google, HubSpot, Kaggle, Microsoft, the University of Helsinki. Free certificates are proof that you learnt something and finished it. They're not proctored certifications, and the guide is honest about where you'll still need a paid exam.
10 genuinely free certifications at a glance
Free to learn and free to certify, checked on each issuer's page on 3 November 2026. Optional paid upgrades are noted.
| # | Certification | Cost | Time | Prove it free |
|---|---|---|---|---|
| 1 | CS50: Introduction to Computer ScienceHarvard University | Free1 | Self-paced | Free test |
| 2 | Elements of AIUniversity of Helsinki & MinnaLearn | Free2 | Self-paced | Free test |
| 3 | Kaggle Learn Micro-Courses (ML, Python, SQL)Kaggle (Google) | Free3 | Short micro-courses, a few hours each | Free test |
| 4 | CS50's Introduction to AI with PythonHarvard University | Free4 | Self-paced | Free test |
| 5 | freeCodeCamp CertificationsfreeCodeCamp | Free5 | Self-paced | Free test |
| 6 | Google Ads & Google Analytics Certifications (Skillshop)Google Skillshop | Free6 | Self-paced | Free test |
| 7 | HubSpot Inbound Marketing CertificationHubSpot Academy | Free7 | Self-paced | Free test |
| 8 | HubSpot Content Marketing CertificationHubSpot Academy | Free8 | Self-paced | Free test |
| 9 | Semrush Academy SEO CertificationsSemrush | Free9 | Self-paced | Free test |
| 10 | Microsoft Learn Free AI & Cloud TrainingMicrosoft | Free10 | Self-paced | Free test |
Prove it free before you pay for an exam
Take the free test first. Pay for an exam only when you pass.
Science of Apps adds another free option: 1,200+ free, test-based certifications — one of the largest libraries of free certification tests online — graded on our server, with a certificate employers can verify by its ID. They're our own assessments, not accredited qualifications. (Disclosure: we publish these tests.)
- Computer Science Fundamentals TestCheck the CS fundamentals CS50 teaches.Start free test →
- Python Programming CertificationA free Python test to pair with Kaggle or CS50 AI.Start free test →
- Digital Marketing Fundamentals CertificationProve marketing fundamentals alongside HubSpot and Skillshop.Start free test →
- AI Literacy CertificationA free AI literacy credential after Elements of AI.Start free test →
The ten free certifications, and who each is for
Ordered by how much a recruiter is likely to value each one, starting with the most demanding.
- Harvard UniversityCS50: Introduction to Computer ScienceBreaking into software, if you can put in the hoursFree
- Elements of AIElements of AIUnderstanding AI in a few eveningsFree
- KaggleKaggle Learn Micro-Courses (ML, Python, SQL)Aspiring data analysts and scientistsFree
CS50: Introduction to Computer Science
- Cost
- Free1
Harvard's famous introduction to computer science, free online with a free CS50 certificate when you finish every problem set and the final project. It's hard: expect C, Python, SQL and web programming, and many weeks of work. That difficulty is why it's respected. edX sells an optional verified certificate, but you don't need it.
Best forbreaking into software, if you can put in the hours
Elements of AI
- Cost
- Free2
- Time
- Self-paced
The most accessible free AI credential, from the University of Helsinki and MinnaLearn. Six short chapters explain what AI is and isn't, with exercises and a free certificate at the end. It suits anyone who wants to talk about AI sensibly at work, and it takes a few evenings, not months.
Best forunderstanding AI in a few evenings
Kaggle Learn Micro-Courses (ML, Python, SQL)
- Cost
- Free3
- Time
- Short micro-courses, a few hours each
Short, hands-on micro-courses in Python, pandas, SQL, machine learning and data visualisation, each with a free certificate. You write real code in browser notebooks from the first lesson. Data analysts and aspiring data scientists get the most from it, especially if they go on to publish a notebook on Kaggle as a portfolio piece.
Best foraspiring data analysts and scientists
CS50's Introduction to AI with Python
- Cost
- Free4
Harvard's follow-on course on AI with Python: search, knowledge, uncertainty, optimisation, machine learning, neural networks and language. Like CS50, it's free with a free CS50 certificate for completing the projects. Take it after CS50 or with solid Python; it's demanding and rewarding.
Best forPython programmers moving into AI
freeCodeCamp Certifications
- Cost
- Free5
Free, project-based certifications in responsive web design, JavaScript, front-end libraries, data analysis with Python and more. Each certification requires building several projects that pass automated tests, so you finish with a portfolio, not just a certificate. It's the best free route into web development.
Best forfuture web developers who want a portfolio
Google Ads & Google Analytics Certifications (Skillshop)
- Cost
- Free6
Google's own free certifications for Google Ads and Google Analytics, among others. Marketers and agency staff use them as baseline proof of platform skill, and many agencies expect them. Each takes a few hours to prepare and certificates expire, so renew them as Google updates its products.
Best formarketers who run Google Ads or Analytics
HubSpot Inbound Marketing Certification
- Cost
- Free7
HubSpot Academy's free Inbound Marketing certification, a standard first credential for marketers and founders. It teaches how to attract and convert customers with content rather than interruption. Short and practical; certificates need periodic renewal.
Best formarketers, founders and sales teams
HubSpot Content Marketing Certification
- Cost
- Free8
HubSpot's free Content Marketing certification, focused on planning, creating and repurposing content that ranks and converts. It suits writers, social media managers and small-business owners. Pair it with a few published pieces you can point to.
Best forwriters and social media managers
Semrush Academy SEO Certifications
- Cost
- Free9
Free SEO and digital-marketing courses with free certificates from Semrush Academy, taught by working practitioners. The SEO fundamentals and keyword research courses are the most useful. It's a sensible complement to Google Skillshop for anyone in search marketing.
Best foranyone working in search marketing
Microsoft Learn Free AI & Cloud Training
- Cost
- Free10
Microsoft Learn's training for Azure, AI, Power BI and Microsoft 365 is free and awards free badges and trophies to your profile. Those aren't certifications: Microsoft's exams (AI-900, AZ-900, PL-300) are paid. But it's the best free preparation for them, and the badges show steady learning.
Best forpreparing for a Microsoft exam for free
How to spot a certificate that isn't really free
Check three things before you start any "free" course, because the paywall usually sits at the end.
- Is the certificate free, or just the course? — "Free to audit" means the certificate costs extra.
- Is there a time limit? — some free trials convert to paid subscriptions after 7 days.
- Who issues it? — a certificate from an issuer no employer has heard of adds nothing to a résumé.
- Is there any assessment? — a certificate for watching videos carries less weight than one for passing projects or tests.
Which free certification for which goal
| Your goal | Free certifications to start with |
|---|---|
| Break into software | Harvard CS50, freeCodeCamp |
| Move into data | Kaggle Learn, then Harvard CS50 AI |
| Understand AI | Elements of AI |
| Start in marketing | Google Skillshop, HubSpot Inbound, Semrush Academy |
| Prepare for a Microsoft exam | Microsoft Learn |
Table: Free certifications matched to career goals
When you'll still need a paid certification
Free certificates prove learning; proctored certifications prove mastery under exam conditions, and some job filters require them by name. Security roles often ask for CompTIA Security+, cloud roles for AWS or Azure exams, and project roles for CAPM or PMP. Use free courses to learn and to find out whether you like the field, then spend on one exam. Before you book, check your level with a free Science of Apps practice test.
How we ranked these picks
We only included programmes where both the learning and the certificate cost nothing on the issuer's site as of 3 November 2026, and where the issuer is widely recognised by employers. We then ordered them by how demanding the assessment is, because harder free certificates (graded projects, problem sets) carry more weight than quizzes.
Frequently asked questions
Which certifications are completely free?
Harvard's CS50 courses (with a free CS50 certificate), Elements of AI, Kaggle Learn, freeCodeCamp, HubSpot Academy, Google Skillshop and Semrush Academy are free to learn and free to certify. Microsoft Learn's training and badges are free, but its certification exams are paid. Science of Apps also offers 1,200+ free certification tests.
Are free certificates worth putting on a resume?
Yes, when they're from a recognised issuer and relevant to the job. A Harvard CS50 certificate or Google Ads certification shows real effort and skill. List the most relevant two or three, link projects you built, and leave off unrelated or very short certificates that make the section look padded.
Is the Harvard CS50 certificate really free?
Yes. Completing all CS50x problem sets and the final project on Harvard's CS50 site earns a free CS50 certificate. edX also sells an optional verified certificate for a fee, which some people prefer for the edX branding, but it isn't required.
Do free certifications expire?
Some do. Google Skillshop and HubSpot certifications must be renewed periodically by retaking the assessment, because the platforms change. Course completion certificates such as CS50 and Elements of AI don't expire. Check each issuer's renewal rules and add an expiry date on LinkedIn where one applies.
Can free certifications get me a job?
They can help you get interviews, especially combined with projects, but on their own they rarely decide a hire. For entry-level roles in web development, data and marketing, a free certificate plus two or three portfolio projects is a strong start. For roles that filter for named paid certifications, add that exam.
Sources
- Harvard University — CS50: Introduction to Computer Science, official page (checked 3 Nov 2026)
- University of Helsinki & MinnaLearn — Elements of AI, official page (checked 3 Nov 2026)
- Kaggle (Google) — Kaggle Learn Micro-Courses (ML, Python, SQL), official page (checked 3 Nov 2026)
- Harvard University — CS50's Introduction to AI with Python, official page (checked 3 Nov 2026)
- freeCodeCamp — freeCodeCamp Certifications, official page (checked 3 Nov 2026)
- Google Skillshop — Google Ads & Google Analytics Certifications (Skillshop), official page (checked 3 Nov 2026)
- HubSpot Academy — HubSpot Inbound Marketing Certification, official page (checked 3 Nov 2026)
- HubSpot Academy — HubSpot Content Marketing Certification, official page (checked 3 Nov 2026)
- Semrush — Semrush Academy SEO Certifications, official page (checked 3 Nov 2026)
- Microsoft — Microsoft Learn Free AI & Cloud Training, official page (checked 3 Nov 2026)
- Checked November 4, 2026. Figures that change — fees, salaries, prices — are reviewed every six months; if something is out of date, tell us.
Where to go from here
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- Science of Apps free certification catalogue — 1,200+ free tests
- Career guides by Science of Apps for 2027The best AI courses of 2027: ten online courses that actually teach you AI, free and paidThe 10 best AI courses of 2027 to learn online: Andrew Ng's Machine Learning, Harvard CS50 AI, Google AI Essentials, Kaggle and more, with time and cost.
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