Best Adjustable Dumbbells Compared

Adjustable dumbbells are one of the most popular home gym purchases—and one of the most confusing. With half a dozen major brands and wildly different designs, choosing the right system matters because you'll use these daily and live with the trade-offs for years. This comparison covers the most popular options available in Canada.

Bowflex SelectTech 552

The most popular adjustable dumbbell in the world. The dial mechanism lets you select weight from 5-52.5 lbs in 2.5-5 lb increments. The dumbbells feel most like traditional dumbbells—balanced, comfortable grip, natural shape. The main downsides are the length (they're long at lighter weights due to the empty cradle slots) and durability (the plastic mechanism can break if dropped).

• Weight range — 5-52.5 lbs per hand.
• Adjustment — Twist-dial, about 3 seconds to change.
• Price — $400-500 CAD.
• Pros — Most natural feel, smooth adjustment, wide availability.
• Cons — Fragile if dropped, long at light weights, plastic components.

PowerBlock Elite/Sport

PowerBlocks use a pin-and-block design where nested weight blocks stack inside each other. They're the most compact adjustable dumbbell and extremely durable—you can drop them without damage. The trade-off is the boxy shape feels different from traditional dumbbells, and the wrist guard can restrict some exercises.

• Weight range — 5-50 lbs (expandable to 70 or 90 lbs with add-on kits).
• Adjustment — Pin selector, about 5 seconds to change.
• Price — $350-450 CAD for base set.
• Pros — Most durable, most compact, expandable to very heavy weights.
• Cons — Boxy shape, wrist guard restricts some movements, different feel.

Nuobell by NÜOBELL

The Nuobell uses a twist-handle mechanism—you simply twist the handle and lift. It's the fastest adjustment system and the dumbbells have a traditional round shape that feels great. The downsides are higher cost and a slightly shorter weight range than competitors.

• Weight range — 5-50 lbs or 5-80 lbs depending on model.
• Adjustment — Twist handle, about 2 seconds. Fastest system available.
• Price — $500-700 CAD.
• Pros — Fastest adjustment, traditional round shape, premium build.
• Cons — Most expensive, limited availability in Canada.

IronMaster Quick-Lock

IronMaster uses a threaded locking pin with add-on weight plates. They feel most like fixed dumbbells and are virtually indestructible—all-metal construction with no plastic parts. The trade-off is slower weight changes (15-20 seconds) because you add or remove individual plates.

• Weight range — 5-75 lbs (expandable to 165 lbs per hand!).
• Adjustment — Pin and plate system, 15-20 seconds.
• Price — $600-800 CAD for base set.
• Pros — Most durable, heaviest max weight, all-metal, most like fixed dumbbells.
• Cons — Slowest to adjust, most expensive base set, heavy at 75 lbs each.

Which Should You Buy?

For most home gym owners, Bowflex SelectTech offers the best balance of feel, speed, and price. If you need heavier weights or maximum durability, PowerBlock is the better long-term investment. If speed of adjustment matters most and budget isn't a constraint, Nuobell is the premium choice. IronMaster is for serious lifters who want the heaviest possible weight and don't mind slower transitions between sets.