Adjustable Dumbbells
A practical set of adjustable dumbbells (up to 20kg) that saves space and money for home strength training.
Adjustable Dumbbells Buying Guide: How to Choose (UK 2026)
Adjustable dumbbells look similar but differ in the things that matter: how much they weigh, how you change the load, whether you get one or two, and how they're built. This guide walks through each so you can match a set to your training.
Weight range and increments
The weight range decides how long the set will serve you. The top weight (normally quoted per dumbbell) should match your strongest lift with headroom to progress; for most home training, a top end of 24-32kg per dumbbell is plenty, while advanced lifters may want more. Increments matter too: smaller steps (around 2.5kg) let you progress gradually, which is especially useful on smaller muscle groups.
Single vs pair
This is the most common point of confusion. Adjustable dumbbells are sold either as a single dumbbell or as a pair (two), and listings (and prices) vary. Since you need two for most two-handed exercises, always check whether the price covers one dumbbell or the pair before buying, so you're not surprised by the total cost.
Dial vs spinlock
There are two main adjustment types. Dial or selector sets let you turn a dial to the weight and lift the handle, leaving the rest in the base, so changes take seconds; they cost more and shouldn't be dropped. Spinlock sets use a threaded handle and screw collars: you add or remove plates by hand, which is cheaper and very durable but slower to change between sets. Pick by how fast you need to switch weights and your budget.
Build, stand and care
Look for solid cast-iron or steel plates and a locking mechanism that holds securely under load. A stand or tray is worth having: it raises the dumbbells for easier pick-up, keeps them tidy, and protects the mechanism. Whatever you buy, lower adjustable dumbbells under control rather than dropping them, as the plate mechanism (especially on dial sets) can be damaged.
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Frequently asked questions
What's the most important thing to check?
Weight range matched to your training, and whether the price is for a single dumbbell or a pair. After that, choose dial (fast, pricier) or spinlock (cheaper, slower) by your budget.
Can you drop adjustable dumbbells?
Best not to. Unlike fixed dumbbells, the adjustment mechanism can be damaged by dropping, especially on dial sets. Lower them under control and use a stand between sets.
Bottom line
Our top pick is the Adjustable Dumbbells (our score 9.6/10) - A practical set of adjustable dumbbells (up to 20kg) that saves space and money for home strength training..