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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.

bar/min

Allowed range: 0.3 to 4 bar/min.

L

Allowed range: 5 to 20 L.

Tank size presets
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=SAC×Vwater\text{RMV} = \text{SAC} \times V_{\text{water}}

Where

SAC\text{SAC}
pressure drop per minute at the surface (bar/min)
VwaterV_{\text{water}}
internal water volume of the cylinder (L)
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