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Diving Gas Planner

Science & Engineering

SAC × depth factor → bottom time

Quick Answer

Diving Gas Planner: SAC × depth factor → bottom time. Diving Gas Planner uses standard science & engineering formulas to compute accurate results instantly.

Input

L
bar
bar
L/min
m
Bottom time at depth45min
Total gas2,400L
Usable gas1,800L
Consumption at depth40L/min

How it works

  1. 1Total = volume × pressure = 12 × 200 = 2,400 L
  2. 2Usable = volume × (fill − reserve) = 1,800 L
  3. 3At-depth rate = SAC × (1 + depth/10) = 40 L/min
  4. 4Bottom time = 1,800 ÷ 40 = 45 min
Every 10 m of depth adds 1 atm — consumption scales by (1 + depth/10). SAC 15–25 L/min is typical for recreational divers (<20 good); measure via tank-drop test. 50 bar reserve is the standard ascent rule; tech diving uses rock-bottom/thirds. Square-profile estimate is conservative — respect NDL/deco stops via dive computer.

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How to Use

  1. Enter known quantities: fill values and confirm units in the Diving Gas Planner.
  2. Instant solution: unknowns solve live with the formula shown transparently.
  3. Use constant/material tables: standard physical constants and material data are listed on this page.
  4. Compare conditions: change inputs to compare scenarios.

Key Points

  • Diving Gas Planner is a free online science & engineering tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: SAC × depth factor → bottom time.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Diving Gas Planner formula

Diving Gas Planner uses standard science & engineering formulas to compute accurate results instantly.

FAQ

How do I use the Diving Gas Planner?
Open the page and fill in the input fields — results update automatically. SAC × depth factor → bottom time.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on CODATA recommended constants and standard physics formulas. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Diving Gas Planner[EB/OL]. https://www.yijiansuan.com/en/c/science/diving-gas

Results provided by this tool are for reference only and do not constitute professional advice.