Kettlebells: which type to buy, what weight to start with, and how to train safely
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- Single-piece cast iron kettlebell. Best for: A first kettlebell for squats, deadlifts, rows and swings. See options on Amazon
- Kettlebell set of two or three weights. Best for: Training both upper and lower body at home. See options on Amazon
- Competition-style kettlebell with consistent dimensions. Best for: Lifters who want the same size and handle at every weight. See options on Amazon
- Adjustable kettlebell, up to about 40 lb. Best for: Small spaces and gradual progress. See options on Amazon
Types of kettlebell
| Type | What it is | Fits | Trade-off |
|---|---|---|---|
| Cast iron | One-piece casting; gets bigger as it gets heavier | General home training | Handle size changes between weights |
| Competition-style | Same outer size across a maker's range; material and handle size vary | Lifters who want identical feel across weights | Light bells are large for their weight |
| Adjustable | One bell with a dial or plates for several weights | Small spaces, gradual progress | Limited top weight; plates may vary slightly |
Rogue's cast iron kettlebells run from 9 lb to 88 lb in 12 sizes, each a single-piece casting with a machined flat base so it sits without wobbling. Handle diameter grows with the bell: 1.2 inches for 9 to 18 lb, 1.4 inches for 26 lb, and 1.5 inches for 35 to 88 lb.
Rogue's competition kettlebells come in 13 weights from 8 kg to 48 kg, keep the same exterior size across the range, and use a standard 33 mm handle. Its cited product page lists the same dimensions across weight increments.
Bowflex says its SelectTech 840 adjusts from 8 to 40 lb across six settings (8, 12, 20, 25, 35 and 40 lb) using a dial, and replaces six kettlebells. For more, see adjustable kettlebells.
How to choose a kettlebell weight
Mayo Clinic's general rule for weight training is to start with a weight you can lift comfortably 12 to 15 times, and to lower the weight or reps if you cannot keep good form. Apply that to your main exercise:
- Pick a bell you can goblet squat or deadlift for 12 to 15 smooth reps.
- Expect presses and single-arm moves to need a lighter bell than squats and deadlifts.
- That is why a kettlebell set of two or three weights, or an adjustable bell, is useful: one lighter for upper body, one heavier for legs and swings.
Check the handle: it should be smooth, with no sharp seams, and wide enough for two hands if you plan to do two-handed swings.
Beginner kettlebell exercises
These cover the main movement patterns and are a common starting point:
- Kettlebell deadlift. Bell between your feet, push your hips back, flat back, stand up tall.
- Goblet squat. Hold the bell by the horns at your chest and squat between your knees.
- One-arm row. Hand on a bench, pull the bell to your hip.
- Overhead press. Press from the shoulder with a light bell.
- Two-handed swing. A hip hinge that swings the bell to chest height, driven by the hips, not the arms.
A scoping review of kettlebell research found that experienced kettlebell users swing with a hip-hinge pattern while novices move differently, so learn the deadlift hinge first. Mayo Clinic also advises a warm-up of five to 10 minutes, controlled movement, breathing out as you lift, and stopping if an exercise causes pain. Strength train at least two times a week, and avoid working the same muscles two days in a row.
What the research shows
A 2019 scoping review in BMC Sports Science, Medicine and Rehabilitation included 99 publications, 68 of them research studies. It found:
- Most studies used healthy, college-age volunteers (79% of experiments and trials), so results may not apply to everyone.
- Effects were typically trivial to small, and confidence in them was low to very low.
- No adverse events were reported in clinical trials, though the authors note this could reflect under-reporting.
- The few published injury case reports appeared to involve training load errors.
In short, kettlebells are a practical way to strength train, but the research does not show they beat other kinds of resistance training. Load them sensibly and build up slowly.
Safety and care
- Train on a flat, non-slip surface with clear space around you; check that an exercise floor mat will not move under your feet.
- Keep a dry grip. Chalk helps, and Rogue says its E-Coat kettlebells hold chalk; see gym chalk.
- Follow the selected maker's care instructions for cleaning its finish. Store bells securely where they cannot fall or roll into a walkway.
- Keep children and pets away from swings and stored bells.
What to look for when you buy
Single-piece cast iron kettlebell
Best for: A first kettlebell for squats, deadlifts, rows and swings
A one-piece casting has no seams or welds to work loose, and a flat base keeps it steady on the floor.
Watch out: Handle size changes between weights, so a light bell can feel narrow for two-handed swings.
See options on AmazonKettlebell set of two or three weights
Best for: Training both upper and lower body at home
Most people need a lighter bell for presses and a heavier one for squats and swings, following Mayo Clinic's 12 to 15 rep rule.
Watch out: Sets take floor space; a small rack keeps them tidy.
See options on AmazonCompetition-style kettlebell with consistent dimensions
Best for: Lifters who want the same size and handle at every weight
Rogue says its competition bells keep the same exterior size from 8 kg to 48 kg with a 33 mm handle, so technique feels consistent.
Watch out: Light competition bells are as big as heavy ones, which some beginners find awkward. Material varies: Rogue's cited version is solid cast iron, so do not assume every competition bell is steel.
See options on AmazonAdjustable kettlebell, up to about 40 lb
Best for: Small spaces and gradual progress
One adjustable bell can stand in for several fixed bells; Bowflex says its SelectTech 840 replaces six kettlebells from 8 to 40 lb.
Watch out: Top weight is limited, and the shape is bulkier than a fixed bell for some moves.
See options on AmazonQuestions people ask
- What weight kettlebell should a beginner start with?
- Choose one you can lift with good form for about 12 to 15 reps on your main exercise, as Mayo Clinic advises for weight training. You will usually need a lighter bell for presses than for squats.
- What are the best kettlebell exercises for beginners?
- Deadlifts, goblet squats, one-arm rows, overhead presses and, once you can hinge well, two-handed swings.
- Are adjustable kettlebells worth it?
- They save space and let you progress in steps. Fixed cast iron bells are simpler and have a more compact shape.
- Is kettlebell training safe?
- A 2019 scoping review found no adverse events reported in clinical trials, and the injury case reports it found appeared to involve training load errors. Learn form first and increase weight gradually. Lack of reported injuries does not prove it is risk-free.
- How often should I do kettlebell workouts?
- Mayo Clinic suggests strength training at least two times a week, without working the same muscles two days in a row.
Sources
- Rogue Kettlebell, E-Coat (roguefitness.com), Rogue Fitness (maker)
- Rogue Competition Kettlebells (roguefitness.com), Rogue Fitness (maker)
- SelectTech 840 Adjustable Kettlebell (bowflex.com), Bowflex (maker)
- Kettlebell training in clinical practice: a scoping review (ebi.ac.uk), BMC Sports Science, Medicine and Rehabilitation (full text via Europe PMC)
- Weight training: Do's and don'ts of proper technique (sportsmedicine.mayoclinic.org), Mayo Clinic Orthopedics and Sports Medicine