Free Tool
Convert Between Metric and Imperial Dive Units Instantly
Six bidirectional conversion modes covering every unit a diver encounters: pressure, depth, volume, temperature, weight, and RMV/SAC rates. Tap to convert, tap to swap — instant results with no internet needed.
Free download — no account needed
What Unit Converter Does
Six conversion modes for every unit a scuba diver encounters.
The Unit Converter handles every conversion a scuba diver needs, organized into six clear modes. Pressure converts between bar, PSI, and ATM. Depth converts between meters and feet with water density awareness. Volume converts between liters and cubic feet for cylinder sizing. Temperature converts between Celsius and Fahrenheit. Weight converts between kilograms and pounds for ballast planning. RMV/SAC converts between L/min and ft³/min for gas planning across unit systems.
All conversions are bidirectional — enter a value in either field and the other updates instantly. The converter uses precise conversion factors (not rounded approximations), so you get accurate results whether you're comparing regulator specs, planning a dive in unfamiliar units, or converting between PADI metric tables and NAUI imperial tables.
Perfect for divers traveling between regions that use different unit systems, or for interpreting equipment specifications published in unfamiliar units.
- Pressure: bar, PSI, ATM
- Depth: meters and feet (salt/fresh water aware)
- Volume: liters and cubic feet
- Temperature: Celsius and Fahrenheit
- Weight: kilograms and pounds
- RMV/SAC: L/min and ft³/min
- Bidirectional — enter in either field
- Works 100% offline
Precise Conversion Factors
Dive unit conversions involve specific factors: 1 bar = 14.5038 PSI, 1 meter of seawater = 3.2808 feet, 1 liter = 0.035315 cubic feet. The converter uses exact (non-rounded) conversion factors to avoid compounding rounding errors when values are used in further calculations. For depth, water density matters: seawater is ~1.025 kg/L vs. fresh water at 1.0 kg/L, so 10m of seawater ≈ 10.3m of fresh water at the same pressure.
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Try Unit Converter Free
Download DiveKit free on iOS and Android. Unit Converter is included — no account, no ads, no internet required.