Plan safer, smarter dives. Free scuba diving calculators for nitrox, gas blending, buoyancy, air consumption, and trimix — all running in your browser.
This page is a hub for all CalcNova scuba and technical diving calculators. Each tool is designed to help recreational and technical divers plan safer, more efficient dives by handling the math behind gas management, buoyancy, and decompression planning.
Even experienced divers benefit from digital tools: they eliminate arithmetic errors, let you quickly model multiple scenarios, and serve as a double-check before a dive briefing. The calculators here cover the most common dive planning needs — from a quick nitrox MOD check to full trimix blend calculations.
These calculators are educational tools only. Always validate dive plans with your trained dive computer, dive tables, or a qualified dive instructor. Never dive beyond your certification level.