RRT Academy
Clinical Tools
Fast, accurate calculators designed for bedside use and NBRC exam prep. All formulas match NBRC standards.
ABG Interpreter
Full acid-base analysis with P/F ratio and A-a gradient
ABGAcid-Base
IBW Calculator
Ideal body weight with 6 ml/kg and 8 ml/kg tidal volume targets
VentilationARDSNet
P/F Ratio
ARDS severity classification by Berlin Definition
ARDSOxygenation
A-a Gradient
Alveolar-arterial oxygen difference with age-adjusted normal range
OxygenationABG
RSBI Calculator
Rapid Shallow Breathing Index for extubation readiness
WeaningExtubation
FiO₂ Estimator
Estimate delivered FiO₂ from O₂ delivery device and flow rate
OxygenDelivery
More calculators coming soon
Ventilator settings, minute ventilation, NIF/MIP, oxygenation index, and more.