Adjustable dumbbells replace a full rack of weights in the space of one pair, which makes them the better buy for most home gyms. Fixed dumbbells change weight instantly, survive drops and suit circuits and shared gyms, but a full set takes a rack and a lot of floor. Choose adjustable for space and value, fixed for speed and durability.
Dumbbells are the most versatile home gym tool. The choice is between one adjustable pair or a set of fixed weights.
Side by side
| Adjustable | Fixed | |
|---|---|---|
| Floor space | One pair and a stand | A rack for every pair |
| Changing weight | Dial, pin or plates | Pick up the next pair |
| Durability | Avoid drops | Built to be dropped (rubber or urethane) |
| Weight increments | Set by the design | Any pairs you buy |
| Value | Cheaper than a full set | Expensive as a full set |
Adjustable dumbbells
Selector-style adjustable dumbbells change weight with a dial or pin. They save space and money, but the handles can be longer than a fixed dumbbell, and some designs feel bulky at light weights.
Fixed dumbbells
Rubber hex, urethane and steel dumbbells are simple and tough. They suit supersets and circuits, and they take abuse. A full set from light to heavy needs a rack and a budget.
How to choose
- Small space or tight budget: adjustable.
- Fast circuits, shared gym, heavy use: fixed.
- Both: an adjustable pair plus a few fixed pairs you use most.
Related: power rack buying guide and all strength equipment.
Common questions
Can you drop adjustable dumbbells?
Most makers advise against dropping them, because the selector mechanism can be damaged. Check the warranty terms.
What weight range do I need?
Pick a range that covers your heaviest lifts, such as rows and presses, with room to progress. Many adjustable pairs go to 50 or 90 pounds per hand.
Are hex dumbbells better than round?
Hex dumbbells do not roll, which helps on the floor and for exercises like renegade rows.