Most "free online course" lists have the same problem: you follow one, invest hours in the lessons, reach the finish line — and discover the certificate is the part that costs money. The learning was free. The proof wasn't. We built baterias-veiculos.com because that bait-and-switch wastes people's time, and because anyone building a résumé or a career change deserves to know the real cost before they start, not after.
How we verify
Every certificate we list is checked one way: at the official source. We open the actual course page on Google, edX, Coursera, freeCodeCamp, or the university's own site — never an aggregator or a blog reselling someone else's summary. Then we sort each one into one of three honest tiers:
- Fully free ⭐ — the course and the certificate cost nothing, with no trial or subscription hiding behind them.
- Free to audit — you can learn the material for free, but the certificate itself requires payment or approved financial aid.
- Verify manually — the free status depends on a promotion, a region, or an application, so you'll want to confirm it yourself before counting on it.
Because platforms change prices without warning, we re-check the directory every quarter. A course that was fully free in January can quietly move behind a paywall by April — so a listing here reflects what we found on its verification date, and we keep going back to catch what's changed.
Our one promise
If a certificate costs money, we tell you the price. If we're not sure whether something is free, we say so instead of guessing. We'd rather lose a click than send you into a paywall you didn't see coming. There are plenty of lists that hide the cost — this isn't one of them.
What you'll find here
Two things. First, verified guides that walk you through specific free courses and certificates — what's genuinely free, what isn't, and who each one is for. Second, the free Certificate Directory, a running list of roughly 50 credentials sorted by those same three tiers, so you can scan the whole field in one place.
New here? Start with the 5 free certificates worth earning first, or browse the wider set of free courses with certificates.