Being CPR certified means you’ve completed a training course that teaches you how to perform chest compressions, rescue breathing, and other emergency techniques on someone whose heart has stopped or who has stopped breathing. The certification confirms you’ve demonstrated these skills and passed a test, and it’s valid for two years in most cases. For some people it’s a job requirement, and for others it’s a personal decision to be prepared for a cardiac emergency at home or in public.
What You Actually Learn
CPR certification courses teach a core set of physical skills. The centerpiece is chest compressions: pressing hard and fast on the center of someone’s chest at a rate of 100 to 120 compressions per minute, to a depth of at least 2 inches for an adult. You also learn rescue breathing, how to use an AED (the portable defibrillator devices mounted on walls in gyms, airports, and offices), and how to help someone who is choking.
Depending on the course, training may also cover responding to opioid overdoses, drowning emergencies, and basic first aid for injuries and environmental emergencies like heat stroke. Some courses include modules specific to infants and children, whose smaller bodies require different techniques. The goal is to keep blood and oxygen flowing to the brain until paramedics arrive, which can mean the difference between survival and death or permanent brain damage.
Standard CPR vs. BLS Certification
There are two main tiers of certification, and the one you need depends on your situation. Standard CPR/AED courses are designed for everyday people: parents, teachers, coaches, office workers. They cover the basics of helping adults, children, and infants during cardiac emergencies and choking incidents.
Basic Life Support, or BLS, is the more comprehensive version built for healthcare workers and first responders. BLS covers everything in a standard CPR course but adds techniques for obstructed airways, rapid patient assessment, team-based resuscitation, and critical thinking during emergencies. If you’re a nurse, EMT, paramedic, dentist, physical therapist, or work in any clinical setting, BLS is almost certainly what your employer requires.
Who Needs It
The list of professions requiring CPR certification is longer than most people expect. Healthcare workers are the obvious group, but the requirement extends well beyond hospitals. Teachers, childcare providers, personal trainers, coaches, lifeguards, flight attendants, construction workers, electricians, park rangers, social workers, security personnel, jail and prison staff, tour and adventure guides, and even veterinary technicians all commonly need current CPR certification to work.
If your job doesn’t require it, certification is still valuable. Most cardiac arrests happen at home, and the person most likely to need CPR is someone you know. Having practiced the technique on a mannequin, rather than trying to recall a YouTube video in a panic, significantly changes what you’re able to do in those first critical minutes before an ambulance arrives.
Where to Get Certified
The two major certifying organizations in the United States are the American Heart Association (AHA) and the American Red Cross (ARC). Both are widely recognized, but they differ in some practical ways.
AHA courses tend to be more clinically focused and are the standard most hospitals and healthcare employers require. They demand a passing score of 84% or higher, and certifications are valid for two years. The AHA also offers advanced courses like ACLS (Advanced Cardiovascular Life Support) and PALS (Pediatric Advanced Life Support) for medical professionals who need deeper training.
Red Cross courses cover similar ground but also branch into areas like lifeguard training, babysitting and childcare classes, and water safety. The Red Cross emphasizes practical simulations and bundles course materials, the skills assessment, and the manual into a single price. Most Red Cross certifications are valid for only one year, with the exception of their healthcare provider course. AHA courses often price each component separately, so the total cost can vary depending on what’s included.
For non-healthcare workers, either organization’s certification is generally accepted. If you work in healthcare, check with your employer first, as many specifically require AHA credentials.
Online-Only Courses Won’t Always Count
You’ll find plenty of websites offering CPR certification entirely online for a low fee. These can be useful for learning the concepts, but they have a significant limitation: OSHA does not accept online-only CPR training for any of its workplace standards. OSHA’s position is straightforward. CPR is a physical skill, and the only way to learn a physical skill is to actually practice it on a mannequin with an instructor verifying your technique.
Most legitimate certification programs use a blended format: an online knowledge portion followed by an in-person skills session where you practice compressions, ventilation, and AED use on training mannequins. If your certification is for a job, make sure the course includes a hands-on component. A certificate from a purely online course may not be accepted by your employer or meet regulatory requirements.
How Long Certification Lasts
AHA certifications are valid for two years through the end of the month they were issued. Red Cross certifications are typically valid for one year, though healthcare provider courses may last two. After that, you need to recertify.
Recertification courses are shorter than the original training since they assume you already have the foundational knowledge. They update you on any guideline changes (the AHA updates its recommendations periodically, most recently in 2025) and verify that your physical skills are still sharp. The key detail many people miss: there is generally no grace period after your certification expires. If you let it lapse, you may need to retake the full original course rather than the shorter recertification version. Setting a calendar reminder a month or two before expiration saves time and money.
What the Certification Card Means
Your CPR certification card, whether physical or digital, is a credential that tells an employer or organization three things: you were trained by a recognized provider, you demonstrated competence in the required skills, and your training is current. It does not make you a medical professional or authorize you to perform medical procedures beyond basic life support. What it does is confirm that if someone collapses near you, you have practiced the specific actions that give them the best chance of surviving until paramedics take over.