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Common Unit Conversions

Live bidirectional conversions for the units technical divers use most. Type in either box — the other updates instantly.

Feet ↔ Meters

feet
meters

1 ft = 0.3048 m

PSI ↔ Bar

psi
bar

1 psi = 0.0689476 bar  ·  1 bar = 14.5038 psi

Pounds ↔ Kilograms

pounds
kilograms

1 lb = 0.453592 kg

Cubic Feet ↔ Liters

cu ft
liters

1 cu ft = 28.3168 L

Degrees F ↔ Degrees C

°F
°C

°C = (°F − 32) × 5/9  ·  °F = °C × 9/5 + 32

Feet ↔ ATA (absolute)

feet
ATA absolute

ATA = (ft / 33) + 1  ·  0 ft = 1 ATA surface

Meters ↔ ATA (absolute)

meters
ATA absolute

ATA = (m / 10) + 1  ·  0 m = 1 ATA surface