10 Best Adjustable Dumbbell Set 2025 in the United States

The UNNMIIY Adjustable Dumbbells offer a versatile 4-in-1 design that works not only as dumbbells but also as barbells, kettlebells, and push-up stands, making them a great option for diverse home workouts. They cover a solid weight range from 2 to 45 pounds per dumbbell, suitable for beginners and intermediate users looking to increase their strength over time. The dumbbells feature a unique adjustment system using detachable weight pieces secured by thickened locking nuts, which improves safety by keeping plates firmly in place during exercise.

The build quality is notable, with a mix of iron, cement, and sand inside the weights, combined with a non-slip, textured ABS handle and foam padding on the connecting rod for comfort and grip. This helps protect your hands and floors, while the compact size and detachable design mean they require less than 2 square feet of storage space—ideal for home gyms with limited room. One potential drawback is the somewhat complex assembly and adjustment process compared to dial-based systems, which might slow down quick weight changes during workouts. Also, the weight increments depend on the removable plates, so fine-tuning exact weights could be less flexible.

These dumbbells are well-suited for fitness enthusiasts wanting multifunctional equipment with good build quality and safe handling, especially if storage space is a concern and you value having several workout options in one set.

The FEIERDUN Adjustable Dumbbells offer a versatile solution for home workouts, allowing weight adjustment from 6 to 22.5 pounds per dumbbell, which suits beginners and intermediate users looking to progress gradually. The set includes a connector that lets you combine the dumbbells into a barbell or other equipment like kettlebells and push-up stands, adding variety to your exercises. The adjustment process involves detachable weight plates secured with safety nuts, which help keep the weights stable during use, enhancing safety. The dumbbell bars feature a non-slip ABS surface and padded foam on the connector bar, providing a comfortable and secure grip that resists sweat and slipping.

Build quality is decent, with alloy steel handles and plastic weight plates, making the set sturdy yet relatively lightweight at 45 pounds total. However, the plastic material for the plates may be less durable than metal options over time. In terms of size and storage, the dimensions are compact enough for most home gyms, though the set does not include a dedicated storage tray, which could make organizing the plates less convenient. Adjusting weights requires unscrewing and swapping plates rather than a quick dial system, so while it’s straightforward, it might be slower compared to some other adjustable dumbbells.

This set is well suited for those seeking an affordable, multifunctional option for varied fitness routines at home but may be less ideal if very quick weight changes or heavy-duty metal plates are a priority for more intense lifting.

The UNNMIIY Adjustable Dumbbell set offers a versatile 4-in-1 design, functioning as dumbbells, barbells, kettlebells, and push-up stands, making it useful for a wide variety of exercises. Each dumbbell adjusts up to 22.5 lbs, which suits beginners to intermediate users but may feel limiting for those seeking heavier weights. The adjustment uses detachable plates made of a mix of iron, mud, and sand, held securely with upgraded locking nuts to prevent wobbling, adding a good safety factor. The dumbbell bars feature non-slip ABS material and a textured grip, combined with a thick foam-covered connecting rod that enhances comfort and reduces hand fatigue during workouts.

Build quality seems solid with attention to durable materials and environmental considerations. The compact design occupies under 2 square feet, helping save space at home, and the detachable plates are straightforward to assemble, making it fairly user-friendly. However, the weight increments are somewhat fixed by the plate sizes, so fine-tuning exact loads might be less flexible compared to dial-based systems.

The combined use as other equipment like kettlebells or push-up stands is creative but may not offer the same convenience or specialization as dedicated gear. This set serves as a practical and cost-effective choice for home fitness enthusiasts who want multiple workout options in one compact package, but those looking for higher weight limits or quicker adjustment mechanisms might want to consider other options.