Best Dive Computers for 2026

Why you can trust this guide

Simon Pierce is a professional whale shark conservation biologist and expert underwater photographer who dives and freedives for a living. This expert guide to the Best Dive Computers is by a world-renowned marine biologist and award-winning underwater photographer who’s been diving for over 20 years, with thousands of dives logged from all over the world. He co-founded the Marine Megafauna Foundation, where he leads the flagship Global Whale Shark Program. He also serves as a member of the IUCN Shark Specialist Group. His marine research and photography are routinely covered by major media outlets, including the BBC, National Geographic, Discovery Channel, and New York Times. One of his photographs was chosen as a personal favourite by Sir David Attenborough, and another illustrates one of the global PADI scuba diving certification cards.

Mads, who has also contributed to this guide, is an avid scuba diver and recreational freediver who’s dived some of the most spectacular locations around the world, from Misool and northern Raja Ampat to the Galápagos, with many stops between. She’s a minimalist and likes to travel light (which Simon encourages, as he can use her baggage allowance), mostly opting to hire dive gear wherever she goes. She’s been sampling the world’s equipment for over a decade, and now dives with the upgraded Shearwater Perdix 2.

As seen in:

Buyers guide to the best dive computers for 2026

Here’s how we picked our dive computers, and what to look for when you buy one.

How we identified the best dive computers

We looked at all the current models from top brands globally to find the best dive computers on the market in 2026. Aside from our own personal experience with lots of different computer models, Mads and Simon spent hours watching YouTube reviews and product explainers, arguing with diver friends, and scouring reviews and message boards. To summarise:

• Between us, we’ve done around 3,000 dives and used lots of different computers.
• We spoke to dive shop owners in Australia and Indonesia to find out what they use and recommend.
• We surveyed our extensive network of professional divers (scuba instructors, professional underwater photographers, marine biologists and more) to get their opinions and feedback.
• We spent (at least) 15 hours doing dive computer and dive watch research online, including scuba message boards, to get up to date on what’s available and what real users’ experiences have been with various models.
• We both read hundreds of reviews to determine the actual performance of the various features.
• We watched dozens of YouTube reviews and product explainers, gathering multiple external opinions.

The main criteria for making our choice quickly became obvious. We all want a computer that’s easy to use, easy to read underwater with a bright, clear screen, and a battery that’s easy to replace but ideally lasts a long time.

There are some other nice-to-have features that, if you’re diving a lot, really do make a difference: air integration, “smart” features, and the ability to upgrade the firmware easily when updates become available.

We identified a range of options that might appeal to different people, as outlined above. Ultimately, though our top choices are expensive, we think they’re worth it. Get the best computer you can afford: it’ll probably last longer, and you’ll enjoy using it more. Buy once, cry once.

Things to consider when choosing a dive computer

1. How recent is it? The latest releases have the most recent tech, and dive computers aren’t a product you’re likely to upgrade often. Read the real-world user reviews to ensure that new features are genuine improvements. Often the last generation will have a price drop too, sometimes offering great value. We chose the Shearwater Peregrine TX and Shearwater Perdix as our top picks in part because their firmware will be continually upgraded for years to come. Super useful.
2. Do users love it? Real-world reviews are the best reviews. Quality over quantity though, to a point; recent releases will obviously have fewer reviews. Most of the new models are incremental upgrades over previous computers, so reviews of older generations are often useful too, especially if the new version addresses the “pain points.”
3. Integrated air. Do you want to see all your dive data at once? Yes. You do. Once you’ve had an air-integrated computer, monitoring an air gauge feels like stepping back in time. Of course, these do come with an additional price tag, but many older transmitters still work well with new computers.
4. Usability. The computer should be intuitive and easy to use. Sad to say, most older (and sometimes cheaper) dive computers are terrible at this. “Beginner” computers are often the worst.
5. Readability. The screen should be bright and the text should be easy to read. The easier, the better. Having a simple screen display is an advantage here, so it only shows what you need to know.
6. A colour screen. This does make the computer more expensive, so we let cheaper computers off on this one, but colour is often useful, particularly for air-integrated computers. Red is… not good.
7. Design. When you’re paying hundreds of dollars, you should expect the computer body to look great, with a comfortable fit and modern interface design.
8. Battery life. You want a computer that tells you how much battery life it’s got, minimises the need for battery charging or changing, and makes this easy to accomplish when necessary. Some computers sound good, by reporting battery life with screen brightness at minimum, but you’ll want a bright screen while diving. There’s no free lunch here: boring old traditional dive computers have a great battery life, but the more “smart” features you want, the bigger the power draw. Some smartwatch-style computers may have to be charged on a nightly basis while you’re diving, though the Garmin Descent Mk3i has excellent battery life, considering all its features.
9. Customisation options. If you want to make your computer look more distinctive, or just fit better, changing the screen colours and straps is often a good way to accomplish that. Straps can suffer wear quite quickly, too, so easy replacement is great. Similarly, if there’s a particular layout of dive information you like, or beeps and so on, check that you can adjust the interface to your liking.
10. Bluetooth connectivity. If you want to download your dive logs to an app or computer, or do easy firmware updates, reliable Bluetooth connectivity is a great feature.
11. Price! A great dive computer will make your diving more enjoyable. Get the best you can afford, as a cheap computer will only frustrate you: you’ll just upgrade anyway. Computers under $300 often lack key features and are a pain to use; over $800 or so, check you’re not paying for functions that you’ll probably never need.

The dive computer guide

Dive computers vs dive consoles vs dive watches

A dive computer displays your dive data on a screen. Often these are smartwatch-style devices, typically worn on the wrist, but not always. For instance, Simon prefers to strap his large-screened Shearwater Perdix AI computer to the strobe arm on his camera.

A dive console combines your dive computer with the air pressure gauge, and in some cases an analog compass, connected to your first stage via a pressure hose. Dive shops often use this configuration, as students are less likely to lose the computer. It’s not the best option for regular divers, though, as it’s not as easy to read as a wrist-mounted device.

A dive watch is a waterproof fashion watch that displays depth when diving. These watches look great if you’re into that style, and they’re an excellent choice for surfing, swimming and watersports. However, if you’re actually diving, you’ll need a dive computer in addition to a dive watch: they won’t calculate your remaining no-decompression time or provide much in the way of dive-related function. Most divers prefer a watch-style dive computer, like the Shearwater Tern TX.

Dive computers with an integrated compass

Modern dive computers use the screen to display a digital compass. This makes keeping an eye on navigation more natural and intuitive, as traditionally a compass is most often located on the cumbersome air pressure gauge and dive console unit, or as a stand-alone piece of kit attached to your BCD or strapped on the wrist.

All of our top dive computer choices feature excellent integrated digital compasses.

Integrated air dive computers

Air-integrated dive computers automatically display your air pressure on the dive computer itself, rather than on a separate pressure gauge, using data received from a small transmitter that attaches to the first-stage regulator mounted on your tank.

The three core benefits of air-integrated dive computers are:

• You can see all your dive data on one screen, with no separate gauge.
• You can set up alerts for 100 bar, 50 bar, or any other pressure level, so you don’t have to keep checking throughout your dive.
• In most new models, you’ll be able to see how many minutes of dive time remain, not just an air pressure reading.

There are two types of transmitters: broadcast and permanent pairing.

1. Broadcast allows you to pair via 20 or so frequencies at the start of your dive; just be sure you’re not pairing to another diver’s frequency.
2. Permanent pairing allows you to enter the transmitter’s serial number into the computer once, and you’ll never have to think about it again.

If you’re on the fence about air integration, keep in mind you cannot upgrade a non-air-integrated dive computer to an air-integrated dive computer. For the system to work, it requires hardware in the computer itself. Thus, if you think you may want one in the future you are better off getting at least a computer that is compatible with the transmitters.

Video: Shearwater PERDIX AI - Recreational and technical scuba diving computer

This functionality is extremely useful, and we thoroughly recommend it.

Usability of the dive computer

The menu system and interface should be intuitive and easy to understand. The physical buttons should be big enough to press while wearing gloves, which is normal in cool water. It shouldn’t require a full manual dive to get started.

For the purposes of this review, we’re applying a 10-minute rule, i.e. 10 minutes of focused attention should be fine to get comfortable with at least the basics. Core tasks are: can you change the date and time easily? Can you switch gas mixture (21% oxygen in air to 32% nitrox) fast? The best dive computers make this effortless.

Dive computer screen layout and design

When it comes to dive computers, we want great functionality, but to be able to quickly see and understand what we need to know. We want to be looking at awesome ocean animals, not trying to interpret screen hieroglyphics.

If you have poor eyesight, you’ll want an uncluttered screen with big, clear text. While some bigger dive computers, like the Shearwater Perdix and Peregrine TX, display clear text, some use the extra space to cram in more confusing, unnecessary graphics, decreasing legibility.

We’ve looked for computers with a modern, clean screen design and a simple information layout, without unnecessary clutter or distracting graphics. Smartwatch tech is often made to look hard-core, with information crammed onto the screen to show off its maximum hardcoreness. Leave that to the noobs.

A great dive computer communicates vital information quickly and clearly when you’re at depth. A cluttered dark screen and hard-to-read type is just a pointless frustration.

Even amongst two of the best, above, you can see that the Shearwater Teric makes better use of the available space than the Garmin Descent. The Teric provides clear, bright, and easy-to-understand information.

Dive computer screen brightness when diving (and on land)

There is significant variation in brightness between dive computer models. Shearwater’s crystal AMOLED and OLED displays, used on the Peregrine TX, Perdix and Tern TX, are among the brightest available.

LED and AMOLED screens offer the highest level of brightness and clarity available. These displays are a game-changer: previously, high brightness was associated with lower battery life, but with energy-efficient screens you get a long-lasting battery with your bright screen. Because what’s the point of a cake you can’t eat?

Multi-dive battery life of your dive computers

Speaking of battery life, many of the latest dive computers are more like smartwatches. With great power comes great battery drain. Like a smartwatch, you’ll need to keep an eye on your battery levels. You might have to charge daily while you’re diving, especially if you also use your dive computer as a smartwatch for everyday tasks like email or texts.

When looking at the manufacturer-provided specs, be sure to look at ‘dive mode’ vs ‘watch mode’ battery life. Garmin’s official specs for the Descent Mk3i, for instance, list up to 66 hours of battery life in dive mode on the 51 mm model. Keep in mind these estimates are typically calculated with screen brightness set to the lowest setting, too. You’ll probably want high brightness for diving.

We’re not saying a relatively short battery life is a negative, really; just make sure the computer gives a clear indication of charge level, and makes it easy to charge or switch the battery.

Dive computer algorithms explained

Dive computers use algorithms to calculate a personalised no decompression schedules by using depth, time, and pressure data points. These algorithms will determine your safety stop schedule, no-fly time, surface interval time, and total dive time allowance. In short, dive algorithms dictate all your dive timings.

All recreational dive computers will be safe when you dive well within their limits. However, dive instructors in particular, when doing repetitive ascents and descents with students, need to be extra careful. Some algorithms are more conservative than others, and some dive computers allow you to select your choice of algorithm, or even design your own. Proceed very carefully. New divers, and less fit divers, should lean towards conservative algorithms. Many of our friends that work as dive instructors level dive friends also use conservative algorithms to increase their safety margins.

These four models form the basis of our modern scuba diving algorithms:

• Bühlmann ZH-L – the Bühlmann Decompression Algorithm.
• VPM – the Varying Permeability Model.
• RGBM – the Reduced Gradient Bubble Model.
• DSAT – the Diving Science And Technology Model.

Here are the manufacturers’ preferred algorithms, marked Conservative (C), Mid (M), Liberal (L):

• Aqualung (M) – Pelagic Z+
• Atomic (M) – Recreational RGBM
• Cressi (C) – RGBM
• Garmin (Personalised) – Bühlmann ZHL-16C
• Mares (C) – RGBM or Bühlmann ZHL-16C
• Oceanic (C) (L) – Dual Algorithm: Pelagic Z+ (ZHL-16C) and Pelagic DSAT
• ScubaPro (Personalised) – ZHL-16 ADT MB
• Shearwater (C with personalisation) – Bühlmann ZHL-16C with optional VPM-B and VPM-B/GFS
• Suunto (C) – RGBM

Lastly, it’s interesting that adaptive technologies, such as heart rate monitoring, are now being built into dive computers by some brands. We’ll be watching carefully to see how this kind of smart integration works in practice.

I’ve also created guides like this one for dive BCDs, dive masks, dive fins, regulators and full-face dive masks, as well as my overall guide to the best dive gear.