How to Do CPR: Step-by-Step CPR Instructions for Beginners (2026 Guide)

Someone near you collapses. They're not breathing. Help is four minutes away.

That is not a dramatic scene from a movie – it happens over 356,000 times every year in the United States alone, according to the American Heart Association. And nearly 90% of those people die, mostly because no one nearby knew what to do.

CPR is not complicated. You do not need to be a nurse or a paramedic. This step-by-step guide will show you exactly how to do CPR – for adults, children, and infants – using the latest 2025 AHA guidelines, in plain everyday language.

What Is CPR and How Does It Work?

CPR stands for Cardiopulmonary Resuscitation. It is an emergency procedure that uses chest compressions – and sometimes rescue breaths – to keep blood flowing to the brain and vital organs when the heart stops.

When the heart stops beating, brain damage starts in as little as 4 to 6 minutes. After 10 minutes without CPR, brain death becomes very likely. Performing CPR right away can double or even triple a person's chance of survival, according to the American Heart Association.

When Should You Start CPR?

Start CPR immediately if a person is:

• Unresponsive – no reaction to tapping their shoulder or calling their name

• Not breathing normally – no breath at all, or only gasping (gasping is not real breathing)

• Pulseless – you cannot detect a heartbeat within 10 seconds

Cardiac arrest can be caused by a heart attack, drowning, choking, drug overdose, electrocution, or a severe allergic reaction. Whatever the cause – do not wait. Every second without CPR lowers the chance of survival.

Step-by-Step CPR Instructions for Beginners

First: Make sure the scene is safe before you approach.

Step 1: Check for Responsiveness

Tap the person firmly on the shoulder and shout loudly, "Are you okay?" No response means they are unresponsive – act immediately.

Step 2: Call 911 Right Away

If others are nearby, point to one specific person and say, "You – call 911 now." This avoids the bystander effect where everyone assumes someone else will call. If you are alone, call 911 yourself and put the phone on speaker.

Step 3: Open the Airway and Check Breathing

Tilt the head back gently and lift the chin to open the airway. Look, listen, and feel for breathing for no more than 10 seconds. If there is no normal breathing, begin CPR.

Step 4: Position Your Hands Correctly

Place the heel of one hand on the center of the chest – on the lower half of the breastbone. Put your other hand on top and interlace your fingers. Keep your fingers off the ribs.

Step 5: Start Chest Compressions

Lock your elbows. Position your shoulders directly above your hands. Push straight down, hard and fast. Based on the 2025 AHA Guidelines:

• Depth: At least 2 inches (5 cm), no more than 2.4 inches (6 cm)

• Rate: 100 to 120 compressions per minute – the beat of "Stayin' Alive" by the Bee Gees works perfectly

• Recoil: Let the chest fully rise between compressions – do not lean your weight on it

Step 6: Give Rescue Breaths (If You Are Trained)

After every 30 compressions, give 2 rescue breaths. Tilt the head back, lift the chin, pinch the nose shut, and give one breath over 1 second – just enough to see the chest rise. This is the 30:2 ratio.

Not trained or not comfortable with rescue breaths? Skip them and go straight to Hands-Only CPR (see below). Compressions alone save lives.

Step 7: Keep Going Until Help Arrives

Continue CPR – 30 compressions, 2 breaths – until:

• Emergency services arrive and take over

• An AED is available and ready to use

• The person starts breathing normally

• You are physically unable to continue (switch with another person every 2 minutes if possible)

Adult CPR – Key Things to Get Right

For adults, compression quality is everything. Shallow compressions are the most common mistake beginners make. Push hard – at least 2 full inches. Yes, it may feel like a lot. Yes, ribs can sometimes crack. A cracked rib heals. A brain deprived of oxygen for 6 minutes does not.

Always perform CPR on a firm, flat surface. If the person is in a soft bed, move them to the floor.

Infant CPR Steps – What's Different in 2026

Infant CPR is not a smaller version of adult CPR. The technique is meaningfully different, and an important change was made in the 2025 AHA Pediatric Guidelines.

The two-finger technique for infants is now officially eliminated. Research showed it consistently failed to achieve the compression depth required. The updated techniques are:

• Two-thumb encircling hands (preferred): Place both thumbs side by side on the lower half of the breastbone, with your fingers wrapped around the baby's back. This produces deeper, more consistent compressions.

• Heel of one hand: Use this if you physically cannot encircle the chest.

Infant compression specs:

• Depth: About 1.5 inches (4 cm), or one-third the depth of the chest

• Rate: 100–120 compressions per minute

• Rescue breaths: Cover both mouth and nose. Give tiny, gentle puffs – just enough to see the chest move. Ratio: 30:2.

One critical note: Cardiac arrest in infants is usually caused by a breathing problem, not a heart problem. Rescue breaths are especially important for babies.

Hands-Only CPR – No Training Required

Never taken a CPR class? This is your starting point.

Hands-Only CPR has just two steps:

1. Call 911

2. Push hard and fast in the center of the chest at 100–120 compressions per minute

That's it. No rescue breaths. No special equipment. Just you and your hands.

The 2025 AHA guidelines confirm that Hands-Only CPR is a fully valid option for untrained bystanders responding to adult cardiac arrest. Studies show it is highly effective in the first few critical minutes. Yet only about 40% of cardiac arrest victims receive any bystander CPR before paramedics arrive, per the American Heart Association. The main reason people do not act is fear of doing it wrong. Hands-Only CPR removes that barrier completely.

CPR Compression Rate and Depth – 2026 Quick Reference Chart

Key rule for all ages: Let the chest fully recoil after every compression. Do not lean on the chest. This allows the heart to refill with blood before the next push.

Based on 2025 American Heart Association Guidelines for CPR and Emergency Cardiovascular Care.

6 Common CPR Mistakes That Reduce Survival Odds

1. Compressing too shallow: Fear of hurting someone causes most beginners to press too lightly. For adults, you need at least 2 full inches. Anything less fails to generate enough blood flow to the brain.

2. Wrong compression rate: Too fast (above 120/min) leads to shallow compressions. Too slow (below 100/min) means not enough circulation. Lock in the "Stayin' Alive" rhythm and stick to it.

3. Not allowing full chest recoil: Leaning on the chest between compressions prevents the heart from refilling with blood. Lift completely off between each push – every single time.

4. Too many pauses: Every pause causes blood pressure to drop. Keep interruptions under 10 seconds, even when giving breaths or switching rescuers.

5. Incorrect hand placement: Too high, too low, or off-center all reduce effectiveness and risk injury. Always place on the lower half of the center of the chest.

6. Forgetting to call 911: CPR keeps the person alive – it does not restart the heart. A defibrillator and advanced care do that. Never skip the call to 911.

CPR Safety Tips Every Beginner Should Know

Good Samaritan laws exist in every US state. If you perform CPR in good faith during an emergency, you are legally protected. Do not let fear of lawsuits stop you from acting.

Use a CPR face shield or pocket mask if one is nearby – it makes rescue breaths more comfortable and hygienic, but it is not required. If an AED is available, use it. Just attach the pads and follow the voice instructions. The device will not deliver a shock unless the person's heart actually needs one. If a second rescuer is present, switch every 2 minutes to keep compression quality high, as fatigue sets in faster than most people expect.

How to Respond in a Cardiac Emergency – Full Action Sequence

When someone collapses in front of you, follow this order without hesitation:

1. Check the scene – Is it safe to approach?

2. Check the person – Tap, shout, look for normal breathing

3. Call 911 – Or assign someone to do it immediately

4. Start CPR – Begin compressions without delay

5. Use an AED – Send someone to find one while you continue CPR

6. Do not stop – Keep going until help arrives or the person recovers

For every minute that passes without CPR, survival odds fall by approximately 7 to 10 percent, according to 2025 cardiac arrest research. The single most effective thing you can do is start immediately.

Frequently Asked Questions About CPR

Q: Can I do CPR if I've never been trained?

Yes. Hands-Only CPR requires zero prior training. Call 911, then push hard and fast in the center of the chest. It is always better than doing nothing.

Q: How hard should I actually push?

Harder than you probably think. For adults, the chest must compress at least 2 full inches. Use your body weight – not just arm strength – with your elbows locked straight.

Q: What if I accidentally break a rib?

It happens, especially with older adults. Do not stop. A broken rib is painful but fully treatable. Brain damage from 6 minutes without oxygen is permanent.

Q: How long do I keep doing CPR?

Until EMS takes over, an AED has been used, the person breathes normally, or you physically cannot continue. Do not stop early.

Q: Is mouth-to-mouth still necessary?

For untrained bystanders helping an adult – no. Hands-Only CPR is fully AHA-approved. For children and infants, rescue breaths are strongly encouraged because their cardiac arrests are usually caused by breathing problems, not heart problems.

Q: Will I get in legal trouble if something goes wrong?

No. Every US state has Good Samaritan laws that protect bystanders who attempt CPR in good faith during an emergency.

Q: Are CPR guidelines up to date?

Yes. The American Heart Association published its most recent full update in October 2025 – the first complete revision since 2020. As of March 1, 2026, all AHA-certified courses teach only the 2025 guidelines. If your certification predates 2025, a refresh is recommended.

Q: Can kids learn CPR?

Yes. The 2025 AHA guidelines specifically state that children 12 years and older can be effectively taught CPR and AED use.

Conclusion: The 5-Minute Skill That Could Save a Life

Cardiac arrest does not announce itself. It happens at the dinner table, on the soccer field, in the office breakroom. The person closest to the victim in those first minutes is almost never a trained paramedic – it is a parent, a coworker, a friend, or a stranger.

Bystander CPR raises survival to hospital discharge from 7.6% to 13%, according to CARES 2024 data. Yet only 40% of victims receive it. The gap between those two numbers is not a medical problem – it is a training problem.

If you want to move beyond reading and build real, hands-on confidence, our Emergency First Aid & CPR online course is built for exactly that. Designed for US-based beginners, it covers adult, child, and infant CPR, Hands-Only technique, AED use, and essential first aid – all at your own pace, fully aligned with the 2025 AHA guidelines.

You may never need to use CPR. But if you do, the 5 minutes you spent learning it could be the most important 5 minutes of someone else's life.

The skill takes minutes to learn. The impact lasts a lifetime.

Sources: American Heart Association – CPR Facts and Stats | 2025 AHA CPR Guidelines Update | CARES 2024 Annual Report |