How to perform CPR (adults, children and infants)
By CBD College · Reviewed by our training team · Updated 6 June 2026 · 5 min read
To perform CPR, give 30 chest compressions followed by 2 rescue breaths, repeating at a rate of 100–120 compressions per minute, until the person recovers, help arrives, or a defibrillator is ready. Push hard and fast in the centre of the chest — about one-third of the chest depth. CPR is the same ratio (30:2) for adults, children and infants; the technique differs.
Adults, children and infants
- Adults: two hands, centre of the chest, one-third depth.
- Children (1–8): one or two hands depending on size, one-third depth.
- Infants (under 1): two fingers, one-third depth.
- All ages use the same 30:2 ratio at 100–120 per minute.
Why hands-on practice matters
Reading the steps builds awareness, but compression depth, rate and rescue breaths are skills best learned on a manikin with a trainer. An accredited CPR or first aid course lets you practise until it's second nature.
Frequently asked questions
How fast should CPR compressions be?▾
100–120 compressions per minute — about the beat of the song 'Stayin' Alive'.
What if I can't or won't give breaths?▾
Compression-only CPR is far better than nothing. Keep doing continuous chest compressions until help arrives.
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