Ocenco EBA 6.5 SCBA Air Time Calculator

Select a model, choose a cylinder, enter pressure and RMV to estimate time remaining.

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Auto-filled from cylinder default (editable).
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Ocenco SCBA Air Time Calculator (Training & Planning Estimate)

Air time planning applies across fire, industrial, and high-risk environments. This Ocenco SCBA Air Time Calculator estimates time remaining using cylinder water volume, usable pressure after reserve, and RMV (L/min). Use it for training and planning—not as a replacement for gauge readings, SOPs, or risk-based decision making.

Where this estimate helps

  • Training: compare workload presets and build realistic expectations for duration.
  • Pre-plans: estimate air needs for long egress paths and complex environments.
  • Team briefings: standardize reserve pressure and conservative RMV assumptions.
  • Safety culture: reinforce frequent air checks and early exits.

RMV selection: plan conservative

RMV increases with heat, stress, and rapid movement. If you do not know your RMV, use conservative values: Light ~25–35 L/min, Moderate ~35–50 L/min, Heavy ~50–70+ L/min.

Reserve pressure is your safety buffer

Reserve pressure protects egress and emergency problem-solving time. Subtracting reserve pressure gives a more realistic estimate of working time.

Why real duration can be shorter

Temperature effects, leaks, mask seal issues, and workload spikes can reduce real air time. Treat results as an estimate and validate through training and operations.

FAQ

No. It is a planning estimate. Real duration varies by conditions and configuration. Always monitor your gauge and follow SOPs.

Use a conservative heavy-work RMV (50–70+ L/min) for planning in high-risk or high-heat environments.

Reserve pressure is protected air for safe egress and emergencies. Subtracting it prevents overestimating interior work time.

Use it for planning and training only. On scene, rely on gauge readings, SOPs, and officer direction.

Notes & safety

This is an estimate based on entered values. Real-world air consumption changes with workload, stress, temperature, mask seal, leaks, and training. Always follow SOPs and monitor your pressure gauge.

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