Can I change the timing?

Yes. Choose three, four, five or six seconds per phase to make the rhythm shorter or longer to suit your comfort.

Does this collect any health or breathing data?

No. The timer simply paces the phases in your browser. It does not measure, record or upload any breathing or health data — nothing leaves your device.

Box Breathing Timer — Gera Tools

Q: What is box breathing?

Box breathing, or square breathing, is a calming technique that splits each breath into four equal phases — inhale, hold, exhale, hold — usually four seconds each. It is widely used to reduce stress and steady focus.

A guided box breathing timer

Box breathing divides each breath into four equal phases — inhale, hold, exhale, hold — to slow the breath and calm the mind. This timer paces you through the rhythm with a clear prompt and an animated square that expands as you breathe in and contracts as you breathe out.

Choose the phase length that feels comfortable and let the timer loop, counting each completed cycle. It runs entirely in your browser and records nothing — no breathing or health data is collected or uploaded.