NordTek Dive Planner

SAC Calculator • Gas Planning
Starting Pressure
BAR
Ending Pressure
BAR
Tank Size
L
Dive Time
MIN
Average Depth ?
M
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Don't know your average depth?
Use a SAC Test Dive

Recommended test depth: 10–15m

  1. Descend to a constant depth.
  2. Swim normally for 10–15 minutes.
  3. Record:
    • Start Pressure
    • End Pressure
    • Time
    • Depth
  4. Enter that depth as your Average Depth.

Because the depth remains constant, your test depth equals your average depth, producing a much more accurate SAC rate.

⌁ Your SAC Rate
—L/min
—
Surface Air Consumption — the amount of gas you'd use per minute at the surface.
SAC = (ΔPressure × Tank Vol) ÷ Time ÷ Depth Factor
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Plan your recreational dive gas needs. Enter your cylinder setup and dive profile — NordTek calculates gas required, end pressure, reserve and safety margin.
Cylinder Volume
L
Cylinder Fill Pressure
BAR
Number of Cylinders
Target Depth
M
Planned Dive Time
MIN
Minimum Reserve Pressure
BAR
Your SAC Rate ?Calculate yours ›
L/MIN
—
—
Gas Required
—
Usable Gas
—
End Pressure
—
Safety Margin
—
Reserve Remaining
—
Gas Required = SAC × Depth Factor × Time
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