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Both ACE and NASM are NCCA-accredited and accepted globally. NASM suits science-heavy corrective exercise focus. ACE suits behaviour change coaching at a slightly lower price.
What is ACE certification?
ACE, or the American Council on Exercise, was founded in 1985. It is one of the most respected personal trainer certifications worldwide, accredited by the NCCA — the gold standard in fitness certification accreditation. ACE focuses on behaviour change psychology and helping everyday people move more. The basic certification starts at $675 and takes 3–6 months to complete. ACE is valid in over 90 countries and has certified over 90,000 fitness professionals globally.
What is NASM certification?
NASM, or the National Academy of Sports Medicine, was founded in 1987. It is currently the most popular personal trainer certification in the world, with over 22,000 professionals certified in 2025 alone. NASM is NCCA-accredited and built around the Optimum Performance Training (OPT) model — a systematic approach that starts with corrective exercise before progressing to advanced training. The basic certification starts at $629 and takes 4–6 weeks to 6 months depending on your pace. NASM is recognised in 45 partner countries and is the preferred certification at many major gym chains globally.
ACE vs NASM — cost comparison
Cost is often the deciding factor for most aspiring trainers. Here is a direct comparison of what you pay for each certification.
| ACE | NASM | |
| Starting price | $675 | $629 |
| Top package | $975 | $1,999 |
| Payment plan | From $38/month | Available |
| Recertification | $129 every 2 years | $99 every 2 years |
NASM is slightly cheaper to start and cheaper to recertify. However ACE’s top package at $975 is significantly more affordable than NASM’s premium package at $1,999. For most beginners the base packages from both are very similar in price.
ACE vs NASM — exam difficulty
Both exams are challenging and require serious preparation. ACE has 150 questions, takes 3 hours, and has a pass rate of around 65%. NASM has 120 questions, takes 2 hours, and has an 85% pass rate — the highest of any NCCA-accredited personal trainer certification. Despite NASM’s material being more technical and science-heavy, the shorter exam and higher pass rate make it easier to get through on your first attempt. If you struggle with long exams, NASM is the better choice purely from a test-taking perspective.
“Read our full ISSA certification review to see how it compares”
Which gyms accept ACE and NASM?
Both certifications are widely accepted by major gym chains worldwide. ACE and NASM are recognised at Equinox, Gold’s Gym, LA Fitness, Anytime Fitness, Planet Fitness, Crunch, and thousands of independent gyms. In practice, NASM has a slight edge in employer preference — particularly in the United States, Canada, and the UAE. However neither certification will close doors for you. If you are applying to a specific gym, it is worth checking their job listings to see which certification they prefer before making your decision.
ACE vs NASM — which should you choose?
The right choice depends entirely on your career goals and learning style.
Choose ACE if:
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- You want a strong foundation in behaviour change and client coaching
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- You plan to work in corporate wellness or health coaching
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- You prefer a longer study period with more flexible pacing
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- Budget is a priority and you want a mid-range top package
Choose NASM if:
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- You want the most employer-recognised certification globally
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- You plan to specialise in corrective exercise or sports performance
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- You prefer a structured, science-based training model
- You want the highest possible pass rate on your first attempt
Final verdict
Both ACE and NASM are excellent certifications and you genuinely cannot go wrong with either. They are both NCCA-accredited, globally recognised, and accepted at major gyms worldwide. If we had to pick one — NASM gets the edge for its higher employer recognition, better pass rate, and structured OPT model. ACE wins on affordability and its focus on coaching and behaviour change.
The best certification is ultimately the one you will actually complete and use. Pick the one that fits your budget, your learning style, and your career goals.
Ready to get started? Compare the latest ACE certification packages [here] or explore NASM certification options [here].
Frequently asked questions
Is ACE or NASM harder to pass? ACE has a pass rate of around 65% compared to NASM’s 85%, making NASM technically easier to pass on your first attempt despite having more technical content.
Is NASM worth the money? Yes — NASM is the most employer-recognised personal trainer certification in the world with the highest pass rate in the industry. The investment pays back quickly once you start working with clients.
Can I study ACE or NASM fully online? Both are fully online programs. You study at your own pace from anywhere in the world and take the final exam at a certified testing centre near you.
Which is cheaper — ACE or NASM? NASM starts slightly cheaper at $629 vs ACE at $675 for the basic package. However NASM’s premium package reaches $1,999 compared to ACE’s $975 top package.
Are ACE and NASM recognised outside the USA? Yes. ACE is valid in over 90 countries and NASM is recognised in 45 partner countries. Both are accepted at international gym chains including those in the UK, UAE, Canada, and Australia.