The correct rate is 100 to 120 chest compressions per minute. This range applies to adults, children, and infants, and it has remained unchanged through the most recent 2025 international resuscitation guidelines. Pushing too slowly fails to circulate enough blood; pushing too fast doesn’t give the heart time to refill between compressions. Staying in that 100-to-120 window gives the person in cardiac arrest the best chance of survival.
Why the 100-to-120 Range Matters
During cardiac arrest, the heart stops pumping blood on its own. Chest compressions act as a manual pump, forcing oxygenated blood toward the brain and other vital organs. At fewer than 100 compressions per minute, blood flow drops too low to keep tissues alive. Above 120, each compression becomes too shallow because the rescuer doesn’t allow the chest to fully recoil, and the heart doesn’t have time to fill with blood before the next push. The result in both cases is less oxygen reaching the brain, which starts suffering irreversible damage within minutes.
Depth and Technique for Adults
Rate is only one piece of effective CPR. Each compression should push the chest down at least 2 inches (5 centimeters) but no more than 2.4 inches (6 centimeters). That’s a surprisingly firm push, and it’s normal to feel or hear ribs crack, especially in older adults. Place the heel of one hand in the center of the chest, put your other hand on top, lock your elbows, and press straight down using your body weight rather than your arm muscles.
Let the chest come all the way back up between compressions. This full recoil is what allows the heart to refill with blood. Leaning on the chest between pushes, even slightly, reduces how much blood gets circulated with the next compression. If you’re getting tired and your compressions are getting shallower, switch with another bystander every two minutes if possible.
Hands-Only CPR for Bystanders
If you see a teen or adult suddenly collapse, the American Heart Association recommends a simple two-step approach: call 911, then push hard and fast in the center of the chest at 100 to 120 compressions per minute. That’s it. You do not need to give rescue breaths. Hands-only CPR is effective for adults who collapse from a cardiac event, and it removes the hesitation many bystanders feel about mouth-to-mouth contact.
Rescue breaths are still recommended for infants, children, drowning victims, and people who collapse from drug overdose or breathing problems. In those cases, the cause is more likely a lack of oxygen rather than a heart rhythm problem, so breaths matter more. The standard ratio is 30 compressions followed by 2 breaths, repeated in cycles. When two trained rescuers are performing CPR on a child, that ratio changes to 15 compressions and 2 breaths.
Songs That Keep You on Pace
Counting to 120 in your head while managing an emergency is hard. A more reliable trick is to mentally play a song you know well that falls in the 100-to-120 beats-per-minute range. The classic example is “Stayin’ Alive” by the Bee Gees at 103 BPM. If that’s not in your mental library, here are several others that work:
- “Flowers” by Miley Cyrus (118 BPM)
- “Uptown Funk” by Mark Ronson ft. Bruno Mars (115 BPM)
- “Dynamite” by BTS (114 BPM)
- “Can’t Stop the Feeling!” by Justin Timberlake (113 BPM)
- “Someone You Loved” by Lewis Capaldi (110 BPM)
- “Calm Down” by Rema ft. Selena Gomez (107 BPM)
- “Havana” by Camila Cabello ft. Young Thug (105 BPM)
- “Circles” by Post Malone (120 BPM)
- “Love Yourself” by Justin Bieber (100 BPM)
Pick one or two you know by heart. In a real emergency, your brain will default to what’s familiar, and having a rhythm locked in means one less thing to think about.
Differences for Children and Infants
The compression rate stays the same for all ages: 100 to 120 per minute. What changes is how you compress. For children (roughly age 1 through puberty), you may use one or two hands depending on the child’s size, pressing about 2 inches deep. For infants under 1 year old, use two fingers placed just below the nipple line, compressing about 1.5 inches deep. The chest is much more flexible in babies, so less force is needed, but the rhythm should feel the same.
What Happens If You Go Too Fast or Too Slow
Studies using real resuscitation data have consistently found that compressions outside the 100-to-120 range reduce survival. Going too fast is actually more common than going too slow, especially as adrenaline kicks in. Rescuers who exceed 120 compressions per minute tend to compress less deeply, which means less blood gets pushed out with each cycle. The 2025 international guidelines reviewed this evidence and confirmed the same target range, noting that even for patients with obesity, there is no reason to deviate from standard CPR protocols.
If emergency dispatchers are on the phone with you, they may coach you with phrases like “push as hard as you can” or count out loud to help you maintain the right pace. Research has found that this kind of simplified coaching improves both hand positioning and compression depth. Follow their lead if they’re guiding you.