What to Consider
Weight Range
Look for a weight range that meets your fitness goals. Most adjustable dumbbells can be adjusted in 2.5-pound or 5-pound increments, so it’s important to consider a weight minimum and maximum that fits your needs.
Size and Shape
Adjustable dumbbells come in different shapes and sizes. Consider the size and shape of the dumbbells and make sure they feel comfortable in your hands. Basically, does the dumbbell feel “good” or natural to you? Again, this comes down to personal preference and might involve some trial and error.
Adjustment Mechanism
There are a few different mechanisms that adjustable dumbbells use to switch weights, with some being easier or more pleasing to the user.
Dial System
This mechanism uses a dial on the end of the dumbbell handle to adjust the weight. To change the weight, you turn the dial to the desired weight, and the mechanism will lock in the appropriate weight plates. Some adjustable dumbbells must be docked in their storage base to change weight with the use of a dial, while others can be adjusted outside of their docking station.
Pin-and-Lock System
This mechanism uses a pin to select the desired weight, and can take some practice to acclimate to if you’re new to it. To change the weight, you pull out the pin, select the desired weight, and then re-insert the pin into the corresponding slot to lock in the weight.
Twist-and-Lock System
This mechanism uses a twist-locking mechanism to secure the weight plates. To change the weight, you twist the handle to unlock the weight plates, remove or add weight plates, and then twist the handle back to lock in the new weight
Magnetic System
This mechanism uses magnets to secure the weight plates. To change the weight, you use a tool to detach the weight plates from the handle, remove or add weight plates as desired, and then reattach the weight plates to the handle using the magnets.
Weight Distribution
Some adjustable dumbbells distribute the load differently than traditional dumbbells (atypical), changing how it responds to certain movements (particularly accessory movements). A good rule of thumb is if you’re looking to perform heavier exercises (farmer’s carries, RDLs, rows) you can consider an adjustable dumbbell that doesn’t distribute its weight like a traditional dumbbell, such as the PowerBlock option featured below. If you’re planning to do more accessory movements (like biceps curls or skull crushers), opt for something more dumbbell-like, such as the SMRTFT pick.
Price
Price is important for just about every home gym builder. For many people, this might be the deciding factor. Because a single pair of adjustable dumbbells replace as many as 17 dumbbells, it’s important to put this investment in perspective. You want to opt for something that can grow with you in terms of durability and weight range, which the cheapest models often can’t.
Warranty
Warranties reflect a manufacturer’s confidence in its product. And with some of the best adjustable dumbbells priced north of $500, you want to be sure your investment is protected. So, it’s important to purchase from a manufacturer that offers a clear, comprehensive warranty. They vary widely across the industry, with the most budget-forward brands offering just 90 days on some parts, and others boasting generous five-year warranties on everything. Again, the more you spend upfront, the better the warranty is likely to be. And, if there’s anything that isn’t clear to you about the stated warranty, be sure to ask. It’s your money, after all.
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