Join the movement toward sustainable diving by transforming everyday currency into eco-friendly weights. This calculator emerged from our comprehensive research into lead-free diving alternatives, helping divers make an immediate, practical impact on ocean conservation while ensuring their own safety.
Our analysis focuses on cupronickel coins, particularly known for their exceptional marine stability. This same corrosion-resistant alloy has proven itself in marine applications for decades, making it ideal for diving use. While other alloys like the aluminum bronze used in Australian dollar coins also perform well, cupronickel's combination of availability and durability makes it our primary recommendation for divers beginning their journey toward sustainable practices.
When selecting coins, keep in mind that countries occasionally modify their coin compositions, sometimes maintaining multiple alloys in circulation simultaneously. For optimal corrosion resistance and longevity, we recommend verifying your coins' mint history before use. This attention to material science helps ensure your investment in sustainable diving remains effective long-term.
Ready to make the switch? Simply select your country and enter your desired weight below. The calculator will determine the exact number of coins needed, provide the total cost in USD, and indicate general availability. This represents your first step toward joining a growing community of environmentally conscious divers.
Learn about Coins as Dive Weights
Select a country and enter desired weight to see results.