Global Freediving Weight Calculator
The most comprehensive tool for freedivers worldwide. Calculate your optimal weight based on your body, equipment, and diving conditions to achieve perfect buoyancy.
Recommended Weight
For neutral buoyancy at 10m depth
Weight Range
Adjust based on personal preference
Buoyancy Profile
Factors Affecting Freediving Weight
Body Composition
Muscle is denser than fat, so muscular individuals may need less weight. Body fat percentage significantly impacts buoyancy. Women typically have higher body fat and may need 1-2kg more than men of the same weight.
Wetsuit Buoyancy
Neoprene traps air bubbles that provide buoyancy. Thicker suits require more weight: approximately 0.5-1kg per mm of thickness. New suits are more buoyant than old compressed ones.
Water Salinity
Saltwater is denser than freshwater, providing more buoyancy. Mediterranean (38g/L salt) requires less weight than the Red Sea (40g/L) or freshwater (0g/L). Brackish water varies between freshwater and seawater.
Diving Depth
As you descend, wetsuit compression reduces buoyancy. Deeper dives may require slightly more weight for the surface but less at depth. Our calculator adjusts for your target depth.
Regional Considerations
Mediterranean
Moderate salinity (38g/L). 3mm wetsuit common in summer. Start with 6-8% of body weight.
Caribbean
Warmer waters (29°C+). Often 1-3mm suits. Higher salinity than Pacific. Typical weight: 4-7% of body mass.
South East Asia
Varying conditions. Thailand's Andaman Sea has higher salinity than the Gulf. Indonesia's currents affect buoyancy. 3-5% body weight common.
Northern Europe
Colder waters require 5-9mm suits. Lower salinity in Baltic Sea. Weight requirements can reach 10-15% of body weight.
Australia
Great Barrier Reef has moderate salinity. Southern waters colder. Diverse conditions require careful adjustment.
Freshwater Lakes
Significantly less buoyant. Requires 2-4kg more than saltwater. Beware of altitude effects on buoyancy.
Note: This calculator provides recommendations based on global averages. Always perform a buoyancy check before diving. Individual factors like lung volume, equipment, and specific conditions will affect your optimal weight.