ROX Index Calculator Sponsored Advertising placement ROX Index Clinical Decision Tool Calculates the ROX Index from oxygen saturation, inspired oxygen fraction and respiratory rate. Oxygen Saturation (SpO₂) i Oxygen Saturation × Peripheral oxygen saturation measured by pulse oximetry. Accepted units % Used by ROX Index Clinical noteCheck signal quality and interpret within the patient context. ReferenceRoca O et al. Am J Respir Crit Care Med. 2019;199:1368–1376. Learn more → % Inspired Oxygen Fraction (FiO₂) i FiO₂ × Enter inspired oxygen as a decimal, for example 0.40 for 40%. Accepted units decimal Used by ROX Index Clinical noteEstimated FiO₂ may be imprecise with variable-flow devices. ReferenceRoca O et al. Am J Respir Crit Care Med. 2019;199:1368–1376. Learn more → decimal Respiratory Rate breaths/min Calculate ROX Index Clear Calculator ☆ Log in to save Save this calculator to your MDPDA account. + Add to Toolkit Log in to save incomplete calculator progress and return later. Log in to save progress Clinical Decision Support Only MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress. Read our Clinical Disclaimer Sponsored Advertising placement