ROX Index Calculator

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ROX Index
Clinical Decision Tool

Calculates the ROX Index from oxygen saturation, inspired oxygen fraction and respiratory rate.

Oxygen Saturation Peripheral oxygen saturation measured by pulse oximetry. Accepted units % Used by ROX Index Clinical note Check signal quality and interpret within the patient context. Reference Roca O et al. Am J Respir Crit Care Med. 2019;199:1368–1376. Learn more →
FiO₂ Enter inspired oxygen as a decimal, for example 0.40 for 40%. Accepted units decimal Used by ROX Index Clinical note Estimated FiO₂ may be imprecise with variable-flow devices. Reference Roca O et al. Am J Respir Crit Care Med. 2019;199:1368–1376. Learn more →
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