Dive Planning

RMV Calculator

Convert your SAC rate to Respiratory Minute Volume (RMV) for tank-independent gas planning.

Need to calculate your SAC rate first?

SAC Rate Calculator

Calculate RMV

Enter your SAC rate and tank specifications to get your RMV.

SAC Rate

bar/min

Tank Water Volume

About 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.

RMV Formula:

RMV = SAC \times V_{water}

SAC vs RMV

• 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.

Result

18.87 L/min

Tank-independent breathing volume from the current SAC and cylinder inputs.

Related Guides

Gas planning & consumption

SAC Rate vs RMV: What's the Difference and When to Use Each

Understand the difference between SAC rate and RMV, when to use each metric, and how to convert between them.

Gas planning & consumption

Understanding SAC Rate: Why It Matters for Every Diver

Learn what Surface Air Consumption rate is, how to calculate it, and tips to improve your breathing efficiency underwater.

Gas planning & consumption

How Long Will My Scuba Tank Last?

Estimate cylinder duration from usable gas, depth, and RMV, and understand why a constant-depth estimate is not a complete dive plan.

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