how many chest compressions for cpr

For standard adult, child, and infant CPR, current guidelines say you should give 30 chest compressions followed by 2 rescue breaths, at a rate of about 100–120 compressions per minute.

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How Many Chest Compressions for CPR? (2026 Update)

If someone’s heart has stopped or they’re not breathing normally, CPR helps keep blood and oxygen moving until professional help arrives. A key part of CPR is doing the right number of chest compressions at the right speed.

Quick Scoop

• Standard ratio: 30 chest compressions, then 2 rescue breaths (“30:2”).

• Compression rate: 100–120 compressions per minute for adults, children, and infants.

• Adult and child depth: about 2 inches (5 cm).

• Infant depth: about 1.5 inches (4 cm).

• Keep going until:
  • Emergency help takes over,
  • An AED is ready to use, or
  • The person starts to breathe or move.

CPR guidance can change over time as experts review new evidence, so taking a recent certified CPR course is strongly recommended.

CPR Numbers You Should Know

The “magic number” most people are taught is 30 compressions before giving 2 breaths.

Core numbers

• Compressions per cycle: 30.

• Breaths per cycle: 2.

• Rate: 100–120 compressions per minute (about 2 per second).

• Depth:
  • Adults: about 2 inches (5 cm).

* Children: about 2 inches.

* Infants: about 1.5 inches (4 cm).

You repeat 30:2 over and over until help arrives or the person recovers enough to breathe and move on their own.

Different Ages, Same Question: How Many Compressions?

The basic 30:2 ratio shows up in all age groups, with a couple of twists when more than one rescuer is present.

Adults

• How many compressions?
  • 30 compressions, then 2 breaths.

• Rate:
  • Keep between 100 and 120 compressions per minute.

• Depth and hand placement:
  • Push down about 2 inches in the center of the chest, on the lower half of the breastbone, using two hands.

Children (about 1 year to puberty)

• How many compressions?
  • 30 compressions, then 2 breaths if you’re alone.

* If there are two trained rescuers, many guidelines allow **15 compressions to 2 breaths**.

• Rate:
  • Still 100–120 compressions per minute.

• Depth:
  • About 2 inches, using one hand (or two for larger children).

Infants (under 1 year)

• How many compressions?
  • 30 compressions, then 2 breaths if you are alone.

* 15 compressions to 2 breaths if two trained rescuers are present.

• Rate:
  • Again, 100–120 compressions per minute.

• Depth and technique:
  • About 1.5 inches deep.

* Use two fingers on the breastbone or a two-thumb encircling technique.

Quick Reference Table (Adults, Children, Infants)

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Age group	Compressions per cycle	Breaths per cycle	Rate (per minute)	Depth	Notes
Adult	30	2	100–120	About 2 inches (5 cm)	Two hands on center of chest
Child	30 (solo) or 15 (two rescuers)	2	100–120	About 2 inches	One hand or two for larger child
Infant	30 (solo) or 15 (two rescuers)	2	100–120	About 1.5 inches (4 cm)	Two fingers or two-thumb encircling hands

Hands-Only CPR: What If You Skip Breaths?

In some situations, especially for adults who suddenly collapse, guidelines allow or encourage hands-only CPR , which means continuous chest compressions with no rescue breaths. This is particularly useful if you are not trained in giving breaths or feel unable to give them safely.

• You still aim for 100–120 compressions per minute.

• You do not stop every 30 compressions for breaths; instead you keep compressing until help or an AED arrives.

Even without breaths, good-quality compressions are far better than doing nothing and are linked with improved survival when done promptly and correctly.

Why the Numbers Matter (And How People Remember Them)

Researchers and resuscitation councils review studies to decide which compression counts and speeds give the best chance of keeping blood flowing to the brain and heart. The 100–120 per minute range is fast on purpose, because slower rates can reduce blood flow, and much faster rates often become too shallow and less effective.

To help people remember the right tempo, instructors sometimes use songs with a similar beat (for example, songs around 100–120 beats per minute), though specific song suggestions vary and trends change over time. The key idea is a steady, strong, uninterrupted rhythm , not the song itself.

One way to picture it: imagine counting “one-and-two-and-three-and…” out loud while pushing in the center of the chest, letting it fully rise between pushes, and staying in that quick, steady rhythm.

“Latest News”, Forums, and CPR Discussions

Over the last few years, online articles and training centers have continued to emphasize the same core numbers: 30 compressions, 2 breaths, 100–120 per minute , and depth targets around 2 inches for adults and children and 1.5 inches for infants. Many newer posts (including 2024–2025 training pages) still frame “30” as the go-to answer when someone asks “How many chest compressions for CPR?”.

On forums and Q&A sites, people often quiz each other with multiple‑choice questions where “30 chest compressions” is confirmed as the correct standard answer for CPR cycles. Training blogs in 2024–2025 also package this as short, memorable slogans like “The magic number is 30 – then two breaths, repeat.”.

Mini How‑To Example (Adult CPR Scenario)

Imagine an adult suddenly collapses and is not breathing normally:

1. Check and call for help.
   • Make sure the scene is safe, check responsiveness, send someone to call emergency services and get an AED if available.

2. Start chest compressions.
   • Place the heel of one hand in the middle of the chest, other hand on top, arms straight.

 * Push hard and fast, about 2 inches deep, at 100–120 per minute.

3. Add breaths if trained and able.
   • After 30 compressions , open the airway and give 2 rescue breaths , watching for chest rise.

4. Keep repeating 30:2.
   • Continue until help arrives, an AED is ready, or the person begins to breathe or move.

Safety Note

This information is not a substitute for formal, hands‑on CPR training.
If you might ever need to use CPR (and most people will be around an emergency at some point), consider a certified course through a recognized provider in your area so you can practice compressions, breaths, and AED use with an instructor.

TL;DR:
For most CPR situations, the answer to “how many chest compressions for CPR?” is 30 chest compressions followed by 2 breaths, at 100–120 compressions per minute , with depth and hand placement adjusted for age.

Information gathered from public forums or data available on the internet and portrayed here.