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Dive Planning

SAC Rate Calculator

Calculate your Surface Air Consumption rate from dive data to improve gas planning and dive safety.

BAR

Allowed range: 170 to 275 BAR.

BAR

Allowed range: 170 to 250 BAR.

BAR

Allowed range: 20 to 140 BAR.

L

Allowed range: 5 to 20 L.

Tank size presets
min

Allowed range: 10 to 120 min.

m

Allowed range: 5 to 40 m.

at surface pressure
Your SAC Rate
1.10 bar/min

Convert your SAC rate to a tank-independent RMV value.

Calculate RMV
About SAC Rate

Surface Air Consumption (SAC) rate is the volume of air you consume per minute at surface pressure. It's a key metric for gas planning and understanding your diving efficiency.

Formula:

SAC=Pstart−PendTdive×DFSAC = \frac{P_{start} - P_{end}}{T_{dive} \times DF}

Where:

  • • PstartP_start = Starting pressure in BAR
  • • PendP_end = Ending pressure in BAR
  • • TdiveT_dive = Dive time in minutes
  • • DFDF = Depth Factor = Depth+1010\frac{Depth + 10}{10}
Tips to Improve

• Perfect your buoyancy

Minimize unnecessary movements and finning

• Breathe continuously and comfortably

Never hold or deliberately restrict your breath to save gas

• Streamline your gear

Reduce drag and maintain proper trim

• Stay relaxed and calm

Stress and anxiety increase air consumption