Target tension.: Whether the muscle you’re training is what gives out first, not your grip, balance or other muscles.
Loaded stretch.: How hard the muscle works while stretched. Training it there is linked to more growth.
Progression.: How easily you can keep adding weight in small steps over months and years.
Low cost.: How easy it is on your joints and recovery, and how quickly you can learn it.

The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work

When each one fits

Good reasons to choose dumbbell rotations

One side is weaker than the other

Good reasons to choose hammer curl

You want to keep adding weight in small steps
You want the forearms to do the work, not other muscles

Dumbbell Rotations

Hammer Curl

You need

Dumbbells

Skill

Easy to learn

Type

Isolation

One side at a time

Yes

Also compared for

Climbing

Ranking →

BDumbbell Rotations#14 of 24
BHammer Curl#10 of 24

For climbing, hammer curl rates higher on our research criteria: more carry-over to climbing. Dumbbell rotations do more to prevent injuries.

Side by side

Transfer

Fair

Good

Injury protection

Strong

Good

Practicality

Excellent

Questions

Which is better for forearm growth, dumbbell rotations or hammer curl?

For forearm growth, hammer curl rates well ahead on our research criteria: easier to progress, more of the work on the forearms.

Is dumbbell rotations or hammer curl easier to learn?

About the same: both are easy to learn.

Can you do dumbbell rotations or hammer curl at home?

Dumbbell rotations need dumbbells, so a home gym covers them. Hammer curl needs dumbbells, so a home gym covers it.

Which is easier on the joints, dumbbell rotations or hammer curl?

About the same: both rate Excellent for joint and recovery cost in our research rubric.

More comparisons

Dumbbell Rotations Hammer Curl All forearms exercises

Dumbbell Rotations vs Hammer Curl

For forearm growth, hammer curl rates well ahead on our research criteria: easier to progress, more of the work on the forearms.

What these mean

Target tension.: Whether the muscle you’re training is what gives out first, not your grip, balance or other muscles.
Loaded stretch.: How hard the muscle works while stretched. Training it there is linked to more growth.
Progression.: How easily you can keep adding weight in small steps over months and years.
Low cost.: How easy it is on your joints and recovery, and how quickly you can learn it.

The research score comes from these, scored by hand from the studies. Lifter scores appear once an exercise has 10 ratings. How scores work

When each one fits

Good reasons to choose dumbbell rotations

One side is weaker than the other

Good reasons to choose hammer curl

You want to keep adding weight in small steps
You want the forearms to do the work, not other muscles

Dumbbell Rotations

Hammer Curl

You need

Dumbbells

Skill

Easy to learn

Type

Isolation

One side at a time

Yes

Also compared for

Climbing

Ranking →

BDumbbell Rotations#14 of 24
BHammer Curl#10 of 24

For climbing, hammer curl rates higher on our research criteria: more carry-over to climbing. Dumbbell rotations do more to prevent injuries.

Side by side

Transfer

Fair

Good

Injury protection

Strong

Good

Practicality

Excellent

Questions

Which is better for forearm growth, dumbbell rotations or hammer curl?

For forearm growth, hammer curl rates well ahead on our research criteria: easier to progress, more of the work on the forearms.

Is dumbbell rotations or hammer curl easier to learn?

About the same: both are easy to learn.

Can you do dumbbell rotations or hammer curl at home?

Dumbbell rotations need dumbbells, so a home gym covers them. Hammer curl needs dumbbells, so a home gym covers it.

Which is easier on the joints, dumbbell rotations or hammer curl?

About the same: both rate Excellent for joint and recovery cost in our research rubric.