5 Best Dive Computers (Reviews Updated 2022)

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Safety is the number one priority when exploring the vast underwater world that is the ocean. As fun as scuba diving can be, it is easy to lose all sense of direction and orientation during deep exploration, especially for the newbies. This is where a dive computer comes in handy as it lets you access vital information while you are underwater, and is also the easiest way to avoid decompression sickness. Your best bet to making sure you’re as safe as can be while out diving is to always have a diving computer within arm’s reach (or on your wrist, preferably).

Best Dive Computers

The online market swarms with a plethora of dive computers, from notable brands to not-so-popular names and it might prove difficult to discern which is worth the buy and which isn’t. This is where we come in, and we have gathered a list of the best-rated dive computers attainable in the market today.

1. SUUNTO EON Steel Dive Computer

Suunto Eon Steel Dive Computer

The EON Steel Dive Computer from SUUNTO sets groundbreaking standards and is ideal for the most advanced divers. Incorporating a sharp display, user-custom interface, and a rechargeable battery, the EON model also boasts a rugged steel construction for durability and up to 8 programmable gas mixtures during a dive.

  • Up to 150m water-resistant.
  • Battery life reaches 30 days (time mode).
  • TFT color LED display.
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2. Aqua Lung i300C Dive Wrist Computer

Aqua Lung I300c Dive Wrist Computer

The Aqua Lung i300C is a simply constructed dive computer with a user-friendly LCD backlit interface, offering all the benefits of an excellent dive piece for a relatively low price. It also retains all calibration settings even between battery changes, which is a very useful feature.

  • Air, Nitrox, Gauge, and Free Dive operating modes.
  • Can be connected to your smartphone via Bluetooth and the DiverLog+ app.
  • Can switch up to 3 gases during a diving session.
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3. SUUNTO Zoop Novo Wrist Scuba Diving Computer

Suunto Zoop Novo Wrist Scuba Diving Computer

The Zoop Novo is one of the best and most popular entry-level diving computers in the market. Surpassing its predecessors, the Zoop Novo comes integrated with five operating modes (air, nitrox, gauge, off and freediving) and an improved dot-matrix display with backlighting.

  • User-friendly interface.
  • Crystal-clear contrast with sharper digits.
  • Dot-matrix backlit display screen.
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4. Cressi Leonardo Dive Computer

Cressi Leonardo Dive Computer, Scuba Diving Instrument

Elegantly built, the Cressi Leonardo is a masterpiece that really goes all out for a device priced so cheaply. It comprises a single button which makes navigation and programming super easy.  The diving modes include Air, Nitrox, and Gauge. If you are a diving rookie looking for a computer that will provide all the features you need, then this pick is for you.

  • 70-hour logbook memory capacity.
  • Can reach a depth of up to 120m underwater.
  • Easy-to-use single button interface.
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5. Mares Quad Dive Computer

Mares Quad Dive Computer

This flagship device from Mares packs features that the brand is excited to enumerate. The large, crisp tempered glass display shows information in the sharpest quality, with four buttons positioned at the top and bottom bezels for an intuitive, user-friendly interface.

  • Features 3 dive modes; Air, Nitrox, and Bottom Timer.
  • Easy-to-use four-button user interface.
  • Maximum depth display of 150m.
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Diving Computer Buying Guide

Purchasing a brand new dive computer can be intimidating, with all the numbers and jargon, and regardless of your level of expertise in scuba diving, novice or experienced, you would want to pick a competent product. This guide will help erase any hard work you would have experienced in looking for the right computer by pointing out the most important aspects to look out for before making an investment.

A standard diving computer should at least display the following features:

  • Temperature
  • No decompression time left
  • Current depth
  • Maximum depth reached
  • Total dive time


You don’t necessarily have to break the bank to get a dive computer that will serve you. If you see yourself diving every other weekend, then a pricier model would work for you, as it would be loaded with premium features. These generally come with extra sensory capabilities and excellent connectivity. As a casual diver, something simple should suffice. Just be sure to stay within budget and pick from a trusted brand.

Air/Nitrox integration

We would recommend that you buy a dive computer with air integration support, as it helps you discard extra load (a pressure gauge) and measure accurately how much air/nitrox you have left.

Battery Life and Replacement

Another important factor to consider is how easy battery replacement would be for your prospective dive computer. Having to periodically send it out to the manufacturer or dealer for a battery change will leave a dent in your pockets in the long run. It’s more convenient to purchase a computer whose batteries could be easily swapped at home or at a reasonable distance away.