Learn what Maximum Operating Depth means, how MOD is calculated from oxygen percentage and PPO2 limits, and how to apply it in real dive planning.
Read guideLearn what Nitrox is, how enriched air works, its benefits and risks, and why divers choose it.
Read guideLearn what Surface Air Consumption rate is, how to calculate it, and tips to improve your breathing efficiency underwater.
Read guideConvert your SAC rate to Respiratory Minute Volume (RMV) for tank-independent gas planning.
Need to calculate your SAC rate first?
SAC Rate CalculatorEnter your SAC rate and tank specifications to get your RMV.
RMV (Respiratory Minute Volume) converts your SAC rate from pressure per minute to volume per minute, making it tank-independent and ideal for gas planning across different tank configurations.
• SAC Rate
Measured in pressure per minute (PSI/min or bar/min). Tank-dependent — changes with different tank sizes.
• RMV
Measured in volume per minute (L/min or cuft/min). Tank-independent — stays the same regardless of tank used.
• When to use RMV
Use RMV when planning dives with different tanks, comparing consumption between divers, or calculating gas requirements for a dive plan.
