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.

Your Weight

Water Type

Wetsuit Thickness (mm)

Experience Level

Target Depth (meters)

Recommended Weight

0.0 kg

For neutral buoyancy at 10m depth

Weight Range

0.0 - 0.0 kg

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.