8 Best Adjustable Dumbbells of 2026

The SelectTech 552 is the set most people picture when they hear adjustable dumbbells, and the specs explain why it ranks first for space savers. Each dumbbell turns from 5 to 52.5 lbs with a dial on either end, across 15 settings, and Bowflex says the pair replaces 15 sets of weights. Below 25 lbs the steps are only 2.5 lbs, which matters for lateral raises, curls and beginners adding load slowly. Each dumbbell measures 16.9 by 8.3 by 9 inches and rests in its own tray, so the pair fits beside a couch without a stand. The ceiling is the trade-off: 52.5 lbs per hand will feel light for heavy rows, presses and goblet squats after a year or two of training, and steps widen to 5 lbs above 25 lbs. The standard warranty covers parts for 2 years. At $399 on sale for the pair when we checked, it costs less than most sets here that reach 50 lbs.

The Pro 100 EXP solves the main problem with dial dumbbells: running out of weight. You start with a pair that adjusts from 5 to 40 lbs, then add 20 lb expansion kits as you get stronger, up to 60, 80 or 100 lbs per hand. A magnetic selector pin sets the load, and two 2.5 lb chrome micro weights in each handle let you move in 2.5 or 5 lb steps. PowerBlock sells kettlebell handles and curl and straight bar attachments that clip onto the same system, which helps if you want one compact set to cover more than dumbbell work. The costs add up, though. The starting pair was listed from $539 when we checked and the full 100 lb pair at $1,196, before a stand. The square block shape also sits differently against your forearms than a round dumbbell on presses and curls. PowerBlock backs it with a 5-year residential warranty that excludes commercial use.

The SelectTech 1090 keeps the dial adjustment of the 552 and raises the ceiling to 90 lbs per hand. Each dumbbell moves from 10 to 90 lbs in 5 lb steps across 17 settings, and Bowflex says the pair replaces 17 sets of weights. That range suits people who already row and press heavy and do not want to switch to plate-loaded handles. The trade-offs are size and the bottom of the range. Each dumbbell measures 17.5 by 9.5 by 10 inches, longer and taller than the 552, and the lightest setting is 10 lbs, so light raises and rehab work need a separate pair of small dumbbells. There are no 2.5 lb settings. Bowflex covers parts for 3 years. At $649 on sale when we checked, it costs less per pound of capacity than most picks here, but the regular $799 price puts it close to a full PowerBlock setup.

Ironmaster takes a different route from dial and pin sets: steel handles and chrome-plated steel plates held by a patented locking design. Each dumbbell adjusts from 5 to 75 lbs, and add-on kits take it to 180 lbs per dumbbell, far beyond any other set here. Ironmaster says the dumbbells are heavy duty enough to drop and backs them with a lifetime warranty, which matters if you train hard for years. The cost is speed and convenience. You change weight by moving plates instead of turning a dial, so supersets and drop sets take longer, and the plates need a place to live when they are off the handle. The 75 lb set was $699 when we checked, the matching stand $169, and the 165 lb add-on kit $399, so a heavy setup reaches four figures. Ironmaster ships free to the continental U.S.

REP's QuickDraw swaps the dial for steel Lock-N-Load switches. You flip a switch to add or remove weight in 10 lb chunks, and 2.5 lb micro-adjustment plates fill in 2.5 or 5 lb steps. REP says there is no delicate internal gearing, the dumbbells are reinforced with steel support rods, and they were drop tested from every angle, which is the main reason to choose them over a plastic-dial set. The base pair covers 5 to 30 lbs and sells for $335.99 with free shipping, and you can buy add-on plates later to reach 60 lbs per hand. That makes the QuickDraw a good fit for lighter lifters and for circuit work where weights end up on the floor. The catch is that 30 lbs is a low ceiling for the base price, and building up to 60 lbs adds cost. Some buyers on REP's page also mention that the weight numbers are hard to read.

Core Home Fitness uses a twist-handle mechanism: a simple twist of the handle changes the weight, with no knobs or levers. Each dumbbell adjusts from 5 to 50 lbs in 5 lb increments, and a window on both handle ends shows the selected weight. At 14.5 by 7.9 by 7.5 inches per dumbbell, it is shorter than either Bowflex set, a real advantage in a small room or closet. The limits are the 50 lb ceiling and the lack of 2.5 lb steps, which makes small-muscle exercises jumpier than on the SelectTech 552. Core offers an optional app at $11.99 per month or $99 per year; the dumbbells work without it. The pair cost $399.99 when we checked, or $469.99 with the matching stand, and the warranty covers parts for 2 years.

FED Fitness, the company behind Flybird benches, sells the Feierdun DB1 as a direct alternative to the SelectTech 552. It covers the same 5 to 52.5 lbs per hand, with 2.5 and 5 lb increments set by independent dials on each end, and an alloy-steel build with a non-slip 1.25 inch handle. The two specs that set it apart are the 3-year warranty and the 30-day money-back guarantee. At $389.99 for the pair when we checked, it was slightly cheaper than the Bowflex sale price and well under Bowflex's $479 regular price. The doubts are about scale. FED lists the product size as 20.86 by 12.6 by 12.6 inches, which appears to include the base, and the product page had only 11 reviews when we checked, so there is little long-term owner feedback. If the Bowflex sale ends, this is the closest like-for-like option.

The PowerFlow X is the cheapest way onto this list, but read the unit carefully: the $179.99 sale price buys one dumbbell, not a pair. That single dumbbell slides between six weight levels from 5 to 55 lbs using a slide-and-lock selector, and the plates dock back into a rack. One dumbbell works for goblet squats, single-arm rows, swings and step-ups, so it can make sense as a first purchase for a renter who mainly trains legs and back. For presses and curls you will want two, which brings the cost to about $360 on sale and removes most of the price advantage. With only six levels, the jumps are large, and buyers on Lifepro's page say they would like 2.5 lb steps. Lifepro offers a lifetime warranty, 30-day returns and free shipping.