Best Dive Computers in 2021

Last updated 04. January 2021

If you’re looking for the best dive computers, then you know how important this little gadget is for a successful dive. In fact, every new diver should invest in a dive computer.

It makes Diving much easier and safer because it will keep a track of your depth and time, which means you don’t have to fiddle around with complicated tables to decipher how long you can be underwater. The best dive computers will, therefore, allow you to maximize your diving time, and mean that you can also maximize your diving fun.

There are a lot of dive computers on the market, but the best dive computer for you will suit your level of diving abilities, while also being within your budget. Here is the list of the best dive computers:

View The Best Dive Computer Below

1. Mares Puck Pro Wrist Dive Computer for Scuba

Mares Puck Pro Wrist Dive Computer for Scuba

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Mares promise that the Puck Pro is a complete dive computer that will suit divers of all different skill levels. The huge display screen features large, easy-to-read numbers, and it has a backlight for when you’re underwater. It is intuitive and user-friendly.

It has an easily adjustable rubber strap that is long enough to fit over bulky suits. It is Nitrox compatible. And the graphics tissue loading bar is a nifty feature that long-term divers will appreciate. You can also easily transfer your dive log to your computer via the USB cable.

+ Massive, easy-to-read display
+ RGBM Nitrox computer
+ Slim design
+ Affordable price
+ Easy to set up

Why We Liked It – It has all the basic features that you need from your dive computer, without being loaded with the unnecessary ones, and the screen is big, which offers enhanced readability.

2. Cressi Leonardo

Cressi Leonardo

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This dive computer by Cressi favors functionality and ease-of-use over everything else. Once it’s strapped to your wrist, you can simply get on with diving. It is possible to program Air, Gauge, and Nitrox modes by a press of a button.

The UFDS display is high definition, with large, legible numbers, but the unit is not bulky or oversized. It features several alarms that will be audible during your dive. It has also been designed ergonomically, with a low-relief profile, which makes it comfortable to wear. The CR 2430 battery can be easily replaced without any tools.

+ Comfortable fit
+ HD display
+ Easy to program
+ Alarm system
+ Gauge calibrated when in saltwater

Why We Liked It – Even the best dive computers can be bulky or uncomfortable to wear, but the ergonomic design by Leonardo makes this dive computer very easy to wear.

3. Suunto Zoop Novo Dive Computer Wrist Watch

Suunto Zoop Novo Dive Computer Wrist Watch

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If you are a recreational diver looking for a dive computer, then this dive watch from Suunto might be perfect for you. It has an extremely bright backlit, huge, LCD display. It also includes a built-in dive planner. It collects all your dive data and graphical logs, which can then be transferred to your computer.

This luxurious dive watch uses Suunto’s RGBM decompression algorithm, which is continuous and full. The rubber strap is sturdy and strong wearing. You also get a lot of diving time out of the battery. And you have the ability to use five modes (Gauge, Nitrox, Air, Free, and Off).

+ Very clear, brightly backlit display
+ Durable strap
+ Full, continuous decompression algorithm
+ Apnea timer is perfect for free divers
+ Dive planner

Why We Liked It – The simplicity of this dive computer makes is perfect for divers who just want to strap a dive computer to your wrist and get on with diving.

4. Aqua Lung Pro HD BCD i300C Dive Computer Titan

Aqua Lung Pro HD BCD i300C Dive Computer Titan

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This is one of the best dive computers around. It is a wrap-around jacket that is full of features. It is extremely easy to balance, while it also has integrated weights, and offers a lot of storage space too. The i300C computer console features a display that has great readability.

It also offers Nitrox and Air modes. The jacket is, of course, a buoyancy compensator, and it also has been designed to withstand the destructive tendencies of salt and chlorine. The computer can also be easily operated thanks to Bluetooth connectivity.

+ Bluetooth enabled
+ Durable jacket
+ Weight integration
+ ABS Octopus allows for good-quality breathing performance
+ Lightweight

Why We Liked It – Considering the extent of features and quality that this dive computer provides, then it offers excellent value-for-money than cannot be matched.

5. Oceanic Geo 2.0 Air/Nitrox Computer Watch

Oceanic Geo 2.0 Air/Nitrox Computer Watch

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This dive computer is about the same size as a digital watch, but it offers all the features that any recreational diver will require. It has two Nitrox mixes which can both be programmable to 100% oxygen. It can also be programmed to provide both deco and no-deco profiles.

Updates and firmware can be easily downloaded on your computer, then installed on the dive computer by connecting it with a USB cable. The audible alarms offer divers security. It runs on a CR 2430 lithium battery, which is common with dive computers. It also has a backlight, ideal for night dives.

+ Two Nitrox mixes
+ Small size
+ Audible alarms
+ Dual time display
+ On-unit logbook

Why We Liked It – It feels like you’re wearing a digital watch, which makes it far more comfortable than some other dive computers that are clunky and bulky. Check out the Oceanic Pro Plus X Dive Computer as an alternative.

Dive Computers Buyers Guide

The best dive computers aren’t overcomplicated or difficult to understand. They will enhance your diving experience while keeping you safe. Here are the most important things to consider when choosing your next dive computer:


The most important element of any dive computer is its display. It is important to select a dive computer that has a clear, big display so that you can easily read the numbers while you’re underwater. A good display will also be backlit, so that you can read it when it is night, or if you find yourself in low-light, perhaps while in a cave.


The last thing you want to be doing is fiddling around with your dive computer either before you drop into the water or, much worse if you’re already underwater. A lot of dive computers will be controlled with a single button, which, of course, is user-friendly, and something that you should look for when choosing your dive computer.

Size and Weight

When you are diving, you want to feel comfortable, and if you have a huge, heavy dive computer on your wrist, then your diving skills could be hampered. Then again, choosing a dive computer that is very small could easily reduce readability.

More advanced divers might feel comfortable with a larger dive computer, as the extra functions will counteract the extra weight. Another thing that a bulkier dive computer might offer is enhanced durability, which is especially useful when investing in a dive computer to last a while.


Depending on the dive computer, it might offer a user chargeable battery, perhaps by a magnetic charger, or it will offer a removable battery, as the lithium CR 2430. If the battery is removable, then you should look at how easy it is to remove, and whether tools will be needed. A chargeable battery is more convenient, but if you can easily remove the lithium battery, then it isn’t a problem either.


Audible alarms will be available on the best dive computers. These are important, as they will alert and warn you about your maximum depth, your rate of ascent, and your no decompression limits, amongst other things. This feature can keep you safe.

What does ‘Nitrox mode’ mean?

Nitrox is a combination of nitrogen and oxygen. Once a diver reaches a certain level and has become certified to use Nitrox, then this enriched air will be used, as it offers much longer diving time and extends the no decompression limits. A dive computer that has Nitrox mode simply means that the computer can be set to use this gas.

Expert Tip

The number one thing to remember is that the very best dive computers feature a display that is clear, big, and easy to read, while also featuring a backlight.

Did you know?

The Aqua-Lung was the very first type of scuba equipment invented. The two men who created it were Emile Gagnan and the legendary Jacques Cousteau, who became famous around the world for his award-winning underwater films.


This list of the best dive computers proves that a good dive computer comes at an affordable price and offers all the basic features that you need. A good dive computer will have a big screen, with easy-to-read numbers, and will also have a backlight. It will have a sturdy rubber wristband that fits around your dive suit.

And it will also have a Nitrox mode so that it suits divers of all levels. It should also have audible alarms to keep you safe. Most dive computers will be worn on your wrist, so also make sure it isn’t too bulky or heavy, otherwise, it will impair your diving enjoyment.

Amazon Recommends:

Bestseller No. 1
Cressi Leonardo, black/grey
  • A single button Dive Computer makes it effortless to set Air, Nitrox and...
  • FO2 adjustable between 21% and 50%. PO2 adjustable between 1.2 bar and 1.6...
  • User-selectable deep stop function. Adjustable unit of measure: imperial or...
Bestseller No. 2
Mares Puck Pro Wrist Dive Computer - Red
  • Slim design for a perfect fit Large display for superior readability...
Bestseller No. 3
Garmin Descent Mk1, Watch-Sized Dive Computer with Surface GPS,...
  • Premium full-featured GPS dive computer in a sleek watch-style design; with...
  • Built-in sensors include 3-axis compass, gyroscope and Barometric altimeter...
  • Supports single-gas, multi-gas, gauge and apnea diving, including nitrox...

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By Jason

Passionate writer, Scooter Dad, Father of two, Super active, Tough Mudder conqueror reviewing the some of the top sports related products me and my sons use and love. If you have any suggestions for improvement of MPS, please ping me a message.

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