Free Online Breathing Exercise Tool
Follow the circle. Breathe in. Hold. Breathe out. Choose a pattern below — the animation guides you through every step.
Choose your breathing pattern
Breathe
Press Start to begin
Rounds: 0
Frequently asked questions
4-7-8 breathing is a relaxation technique developed by Dr. Andrew Weil. It works by extending your exhale, which activates your parasympathetic nervous system. Inhale 4s, hold 7s, exhale 8s. Especially effective for falling asleep and managing acute stress.
Box breathing (also called square breathing) is used by Navy SEALs, athletes, and first responders. Equal counts for all phases create a steady rhythm that lowers heart rate and sharpens focus.
- Trouble sleeping? → 4-7-8 Relaxation
- Pre-meeting nerves? → Box Breathing
- General stress? → Simple Calm
- Full control? → Custom
Generally safe. Stop if you feel lightheaded. Consult your doctor if you have respiratory or heart conditions, or are pregnant.
Yes. CalmTool works on any device with a browser. No app download needed.
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