Fitness Flohmarkt · Guide

Dumbbell biceps curls: grip rotation, form and variations

Dumbbell biceps curls let each hand turn freely. In a standard curl, your palms turn up. In a hammer curl, they keep facing each other. Keep your torso steady and control the lowering phase to find a weight you can handle in each version.

In short

Keep your upper arms close to your body. Bend your elbows and turn your palms up for the standard curl. Keep a neutral grip for hammer curls. Lower until your arms are almost straight, keeping control of the weights.

How to do dumbbell biceps curls

  1. Stand steadily with a dumbbell at each side, palms facing your thighs. Relax your shoulders and keep your wrists straight.
  2. Bend your elbows and turn your forearms until your palms face up. Keep your upper arms near your ribs. Stop lifting before you start using your shoulders or back to bring the weights higher.
  3. Lower smoothly and turn your hands back to the starting position. Straighten your arms as far as you can control. Curl both arms together or alternate sides.
Dumbbell biceps curls: start, rotating curl and hammer curl
Dumbbell biceps curls: start, rotating curl and hammer curl

Rotating curls or hammer curls?

Rotating curl

Your biceps bends your elbow and turns your forearm so your palm faces up. A dumbbell lets each hand follow its own path.

Hammer curl

Your palms keep facing each other and your thumbs point up as you lift. The biceps works alongside the brachialis and the brachioradialis in your forearm.

Dumbbells pull straight down. Leverage at the elbow is usually greatest with your forearm around horizontal. With a cable, the direction of pull shapes the resistance through the movement.

Learn cable biceps curls

Three common biceps curl mistakes

What you noticeWhat to adjust
Your torso swings backwards.Use less weight and start each rep from a steady stance.
Your wrists bend under the load.Keep your hand in line with your forearm. Turn from the forearm.
The weights drop on the way down.Control the lowering phase. Choose a weight you can bring down smoothly.

What weight suits biceps curls?

Test a weight for 10 to 15 steady reps. The final reps can feel hard while grip, range and tempo stay consistent. When you can reach the top of the range for several clean sets, try the next small weight increase. Test each grip separately.

5 kg hex dumbbell

Hex Dumbbell

Example 2 × 5 kg for CHF 30

Use two matching dumbbells to curl both arms together. One dumbbell works if you train one side at a time. Choose a single dumbbell or pair and the weight per hand in the shop. The example price was checked on 9 November 2026.

Choose your pair and weight

More dumbbell exercises

Frequently Asked Questions

Do I have to turn the dumbbells as I curl?

For a standard curl, start with a neutral grip and rotate as you lift, or start with palms facing forward. For hammer curls, keep the grip neutral.

Are hammer curls better than standard curls?

Both bend the elbow. Standard curls let you turn the palm up. Hammer curls keep the forearm neutral. Choose the version you can do comfortably and under control.

How far should I lower the dumbbell?

Lower to a controlled, almost straight position. Let the weight settle briefly at the bottom if you tend to use momentum to start the next rep.

Can I do biceps curls with one dumbbell?

Yes. Train one arm at a time. Use the side that tires first as your guide and keep the weight and reps the same on both sides.

Technique sources

Find dumbbells for your curls

Choose a weight that lets you try both grips smoothly.

Choose a suitable dumbbell pair

About the author

Dominic Bertschin is Head of Marketing at Fitness-Flohmarkt in Liestal. He reads what customers ask and report back after their purchase every day, and writes the guide articles just the way he would have liked to read them himself before placing an order.

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