Body Oxygen Level Test Breathing Calculator

How to perform the test:
Take a normal breath in & then breathe out gently. Pinch your nose & close your mouth to hold your breath on the exhale. Start timing the pause & stop the timer at the very first urge to breathe in.

Breath-hold time on exhale (seconds)* Age (years) Daily activity level Please select Sedentary Moderate Active Hours slept last night I woke up feeling very thirsty Where did you do this test? Indoors Outdoors Current stress level (1 = calm → 5 = high) 3/5 Calculate My Breathing Pattern

This tool provides educational estimates only. Consult a qualified clinician if you have respiratory or medical concerns.