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Dive Computer Algorithms

Why two computers on the same dive show different NDLs, what gradient factors actually adjust, and how conservative firmware changes a liveaboard week. The math is published; the temperaments are not.

▚ DECISIONS

From the Log

Reviews and guides on this subject.

JUL 19, 2026LOG ENTRYDIVE COMPUTERS6 MIN

The Best Budget Dive Computers Under $400 (2026)

The Best Budget Dive Computers Under $400 (2026)

Under $400 buys a genuinely capable, nitrox-ready dive computer -- you give up color screens and air integration, not safety or reliability. Our budget ranking covers one-button classics and wrist units that log, with an honest note on the stretch pick just over the line.

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JUL 19, 2026A-VS-BDIVE COMPUTERS6 MIN

Buhlmann vs RGBM: How Dive Computer Algorithms Differ

Buhlmann vs RGBM: How Dive Computer Algorithms Differ

Put two dive computers on one dive and they can show different no-stop time, because they run different models. An educational explainer on Buhlmann ZHL-16C versus RGBM -- dissolved gas versus bubbles, gradient factors, and why conservatism is a setting, not a safety score.

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JUL 19, 2026LOG ENTRYDIVE COMPUTERS6 MIN

The Best Dive Computers for Beginners in 2026

The Best Dive Computers for Beginners in 2026

The best beginner dive computer is simple to read, forgiving to learn, and ready for the nitrox class you will probably take. Our ranking favors clear displays, replaceable or rechargeable batteries, and units you can grow into -- from one-button classics to a buy-once color screen.

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JUL 19, 2026REVIEWDIVE COMPUTERS6 MIN

Cressi Leonardo 2.0 Review: The One-Button Default

Cressi Leonardo 2.0 Review: The One-Button Default

One button, around $270, and nothing to fumble underwater. The Leonardo 2.0 is the entry-level dive computer as a category. Our review of where that simplicity is exactly right for a new diver, and where the single-button menus become a chore.

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JUL 19, 2026DEEP DIVEDIVE COMPUTERS14 MIN

The Best Dive Computers for 2026, Ranked by Use Case

The Best Dive Computers for 2026, Ranked by Use Case

The best dive computer is the one you will actually read at depth and keep on schedule -- not the one with the longest spec sheet. Our use-case ranking spans budget one-button units, rental-standard workhorses, and premium air-integrated watches, argued from published specs and community consensus.

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JUL 19, 2026A-VS-BDIVE COMPUTERS6 MIN

Console vs Wrist Dive Computer: Which Layout Wins?

Console vs Wrist Dive Computer: Which Layout Wins?

Console or wrist dive computer is a question about where your data lives and how you read it. Our comparison of the two layouts on readability, air integration by wireless transmitter, streamlining, and failure modes, and why the field has shifted decisively toward the wrist.

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▚ KEY TERMS