After our testers performed a circuit of three lower-body and three upper-body strength training routines, the Bowflex SelectTech 552 Dumbbells emerged as one of the best adjustable dumbbells on our list, thanks to their outstanding weight range and simplicity of adjustment. These adjustable dumbbells arrive completely built; however, you will need to use the included Allen wrench to dislodge them from the strap that secures them upon arrival.

We awarded these dumbbells a 10 out of 10 for adaptability, since they were able to swiftly modify the weight between exercises with a short turn of a dial. In addition, since these Bowflex SelectTech 552 dumbbells vary from 6 to 30 pounds in 2.5-pound intervals (and from 26 to 32 pounds in 5-pound intervals), they provide enough weight for a range of total-body workouts suitable for both beginners and intermediate users.

Even better, they enable users to gradually raise the weights of each dumbbell, guaranteeing that these users can continue increasing their exercise level and achieving greater outcomes.

Ratings: 4.8 stars (from 16,490 reviews)

Price: $399

Buy it at: https://www.amazon.com/dp/B001ARYU58

Although we would not suggest these NiceC dumbbells for conventional weightlifting, they are an excellent choice if you are searching for lightweight dumbbells to include in your aerobic regimen and increase the difficulty level. You may use it to do arm workouts while cycling, to boost the strength of a kickboxing punch, or to add friction to your HIIT routines.

The brand claimed that these NiceC dumbbells are adjustable - and it is not wrong; however, they adapt to just three weights. When we measured each dumbbell in our lab, the lowest weight was 2.2 pounds (despite the manufacturer's listing of 2.3 pounds), the average weight was around 3.4 pounds, while the highest weight was about 4.4 pounds (though the brand claimed that it was 4.5 pounds).

However, our testers still thought highly of these NiceC dumbbells due to their flexibility and simplicity of use - for adjustments, all you need to do is simply screw open the sides of the weights to remove or add the little weight bars located within, in order to raise or reduce the overall weight.

Ratings: 4.6 stars (from 4961 reviews)

Price: $24.99

Buy it at: https://www.walmart.com/ip/532280063

Adjustable dumbbells are designed to be used in lieu of whole conventional dumbbell sets, and their prices often reflect this function. However, for less than $300 a pair, these Ativafit 55 LBs Dumbbells are a more affordable choice with a lot to offer. There are nine different weight sets ranging from 11 to 55 pounds in 2.5-pound increments. Because the barbell is five pounds in weight, you may also lift it without weight plates for lower repetitions and resistance training programs.

Changing the weights on this Ativafit 55 LBs dumbbell is a two-step operation. It entails pressing a tiny red upward-facing handle and then spinning the lateral dial until it snaps into position. While this option is not as handy as the others, it has never jammed or been stuck.

A significant advantage of the Ativafit sets is that the weighted bar boasts one of the most pleasant grips on our list. Even better, the curvature of the barbell makes them easier to hold while doing squats or front raises with a single dumbbell.

Ratings: 4.5 stars (from 4873 reviews)

Price: $179.99

Buy it at: https://www.amazon.com/dp/B07PXS7QD3

If you are searching for a single heavyweight dumbbell to save storage or save money, then the FLYBIRD Dumbbell is an excellent and dependable option. With a fast turn of the handle, you can vary the load of the dumbbell from 5.5 to 25.5 pounds in 5-pound intervals. It is so simple to alter that many customers awarded it a perfect score of 5 out of 5.

Because the dumbbells are also very simple to assemble and unpack (it took our testers 12 seconds from beginning to end), the FLYBIRD Dumbbell might have been our "excellent for beginners" option if it could shift in smaller increments. For novices trying to gradually raise their weights, jumping from 5.5 to 10.5 pounds for particular workouts may be difficult.

Still, overall, we believe this set of dumbbells is an excellent choice for more experienced users - who are already comfortable working with weights ranging from 5 to 25 pounds.

Ratings: 4.6 stars (from 3424 reviews)

Price: $89.79

Buy it at: https://www.walmart.com/ip/786070249

These small Powerblock Elite adjustable dumbbells may not resemble regular dumbbells at first glance; nonetheless, they have 16 different weights. In addition, their square design allows them to be conveniently stored and piled in a nook of your home or basement without taking up much space.

The Powerblock Elite dumbbells measuring 5.5 x 11.75 x 6.25 inches are undoubtedly the most durable on our list. Our testers awarded them high scores for sturdiness after putting them on foam carpeting and concrete - which caused no harm to the barbells, even just a small scratch. Due to the fact that these dumbbells have broken through the concrete, you should exercise caution and not throw them harshly on the floor.

Also, the dumbbells have two Chrome adder bells that let you customize your weightlifting experience by adding weight in 2.5-pound increments. While the adjusting process is very straightforward once you get the feel of it (all you need to do is simply put the auto-lock lever on the color-coded strip corresponding to the weight you are attempting to use) it might be more confusing for beginners.

Ratings: 4.7 stars (from 964 reviews)

Price: $359.99

Buy it at: https://www.amazon.com/dp/B00A21NRNO

NordicTrack's Speedweight dumbbell set is comparable in shape and construction to the Bowflex. However, it is somewhat less cumbersome. This dumbbell also has a lower weight range.

To be more specific, its weights begin at ten pounds and increase in 2.5-pound increments up to fifty-five pounds. Adjusting the weight is a two-step operation: it includes a movable pull bar and a turn crank on the inner weight plate. The pull tab will shift in increments of ten pounds, while the dial will allow you to fine-tune your weight choices by 2.5 or five pounds.

While this procedure is more time-consuming than others, it results in a dumbbell that is less bulky and simpler to control throughout your exercise, which we believe is a worthy trade-off.

A slight drawback is that the pull buttons of these NordicTrack's Speedweight tend to get stuck on a handful of occasions. But they are easily twisted and modified, so such issues barely leave any major consequences.

Ratings: 4.5 stars (from 918 reviews)

Price: $329

Buy it at: https://www.amazon.com/dp/B08BDD6GPC

We really appreciate the ribbed grip on these Merax Deluxe 55 dumbbells, which is ideal for weightlifters who want an extra-grip on their sets. When our tester performed lifts with wet fingers throughout the wet test, her hands never slid off the handle, even while completing the workouts with a greater weight. These weights can adjust from 16 to 56 pounds in 10-pound intervals. Hence, one dumbbell is equal to five sets of loads.

Our tester remarked that this size range might not be ideal for novices. Why does she say so? It is because beginning with 15-pound bells- and gradually increasing the load by ten pounds - might pose quite a challenge for those who are just getting started.

Nevertheless, we enjoy how the weights of these Merax Deluxe 55 dumbbells can be readily altered with a twist of the handle, and how the safety deadbolt lock maintains the dumbbells at their selected weight - even when you are performing more dynamic movements like heavy jump squats.

Ratings: 4.5 stars (from 841 reviews)

Price: $478.99

Buy it at: https://www.walmart.com/ip/233772789

Although these dumbbells do not arrive constructed, our tester was able to completely assemble them in less than five minutes without using any tools, earning these dumbbells an honorable mention on our list of the best adjustable dumbbells - thanks to the easy setup and unpacking.

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As with the Bowflex dumbbells, these Core Home Fitness Adjustable Dumbbells scored quite well among our testers. The testers discovered that a simple turn of the handles allowed them to effortlessly modify the weights from activities to exercises.

Still, our testers believe the Bowflex is better in terms of adaptability: while the Bowflex varies in 2.5-pound intervals up to 25 pounds and includes 15 different weights, the Core Home Fitness weights adjust in 5-pound intervals and include only 10 different weights. Our novice testers felt that the 5-pound added weight was a bit tough to build up to week after week - and that they would have liked somewhat smaller step increases.

Ratings: 4.5 stars (from 58 reviews)

Price: $359.99

Buy it at: https://corehomefitness.com/products/adjustable-dumbbell-set

This BESPORTBLE 66 LB dumbbell set includes 16 plates, two barbell collars, and two weight bars. The 16 plates feature the following: four 5.51-pound planes, four 4.4-pound discs, four 3.3-pound rims, and four 2.28-pound plates. They are all ideal for novice weightlifters who want to gradually raise their weights week after week.

These reductions, however, may come at a cost - since our reviewers gave these dumbbells a somewhat lower rating for setup and unpacking, weight adjustment throughout the exercise, and mobility and storage. Due to the fact that the BESPORTBLE 66 LB dumbbells lack the dial adjustment seen on their more costly equivalents, it took our reviewers longer (about 2 minutes) to change the barbells between each workout in the circuit.

Adjusting the dumbbells required our testers to remove the barbell heads, add weight slabs, and then put them back in place. This method may get simpler as you become used to the loads, and some customers may appreciate this plain, no-frills approach to adjusting.

Ratings: 4.1 stars (from 43 reviews)

Price: $119.98

Buy it at: https://www.walmart.com/ip/790143829

The NUOBELL 80 LB dumbbells are an excellent choice for any expert weightlifter wishing to maintain muscular strength at home or in a small area. Our testers rated these weights favorably for adjustability, stating that they can be readily changed between workouts with a quick twist of a lever, and that they can adjust in 5-pound increments from 5 to 80 pounds.

However, when we weighed these NUOBELL 80LB dumbbells in our lab, we discovered that the weight requirement was actually 6.4 pounds - much higher than what the manufacturer said. This - along with the fact that the items need gradual weight increases in 5-pound increments - makes these adjustable dumbbells unsuitable for novices.

Although the dumbbells do not arrive completely built, setup and unpacking are reasonably simple (our tester took less than 8 minutes), and the sets come with a handbook that includes step-by-step instructions and photographs for a six-step installation. A lifter who is intermediate or expert should have little difficulty putting them up, but a beginner may want some more guidance.

Ratings: 4.5 stars (from 29 reviews)

Price: $745

Buy it at: https://www.roguefitness.com/nuobell