Dumbbell bench press: getting the weights up, the press, and the floor version

The dumbbell bench press is the flat bench press with a dumbbell in each hand instead of a bar. Each arm moves on its own, so the weights can travel a little lower at the bottom and come together a little at the top, and a weaker side can't lean on the stronger one. The cost is balance: two separate weights take more steadying than one bar.

This page covers getting the dumbbells into place and back down, the press, what the studies measured, how heavy to start, the floor press, the faults, and the sets. The barbell bench and its setup are on bench press form; the full comparison of the two tools, lift by lift, is on dumbbell vs barbell.

How to do a dumbbell bench press

1. Sit on the end of a flat bench with a dumbbell standing on each thigh, close to your knees, your feet flat on the floor.
2. Lie back and bring them with you. As your back reaches the bench, use your knees to help push the dumbbells up to the sides of your chest. Don't swing them up with your arms alone.
3. Set your position: shoulder blades pulled back and down into the bench, feet planted, a small natural arch in your lower back, your head on the bench.
4. Press up until your arms are straight and the dumbbells sit over your shoulders, close together but not clanking.
5. Lower under control until the dumbbells are about level with your chest, elbows angled out from your body rather than straight out to the sides. Press again.
6. To finish, lower the dumbbells to your chest, bring your knees up to meet them, and rock up to sitting with the weights back on your thighs.

Palms facing your feet is the standard grip. Palms facing each other, the neutral grip, keeps the elbows closer to your body; it's a choice of comfort, and no study comparing the two grips on a dumbbell press turned up in a PubMed search for this page.

Dumbbell bench press muscles worked

The press works the chest, the front of the shoulders and the triceps, like any bench press. The studies agree on the arms and differ on the chest:

• One heavy rep. In 12 trained men who tested a barbell, a Smith machine and dumbbells, chest and front-shoulder activity didn't differ between the three. The dumbbells asked less of the triceps than the barbell and more of the biceps; the less stable the press, the more the biceps worked.¹
• Several sets. In 19 trained men doing four sets at a ten-rep max, the dumbbell press produced more chest and biceps activity than the barbell press, and the barbell more triceps activity. The men also got more total reps with the dumbbells, about 31 against 28.²
• Flat, incline and overhead. In 12 trained and 12 novice women, the flat dumbbell press worked the middle of the chest more than an overhead dumbbell press, and the front of the shoulder less than either the incline or the overhead press.³ More shoulder and upper chest is what the incline bench press is for.

Activity in a session isn't growth over weeks. What the studies support is plain: the flat dumbbell press is a chest exercise, with the triceps doing a little less and the biceps a little more than on the bar.

How heavy to start

Dumbbells go up in fixed steps, and the pair you need is lighter than the bar you'd bench. In the 12-man study above, the dumbbell max was 17% lighter than the barbell max.¹ With the same total weight, the rep counts were close: in 40 college football players, a pair of dumbbells adding up to the same weight as the bar gave about one rep fewer to failure, 12.5 against 13.8, and the two rep counts were highly correlated.⁴

So start with a pair you can press 10 to 12 times with two reps left, and use your first session as the test. If the dumbbells drift apart or wobble at the bottom, they're too heavy for now, whatever your barbell bench is.

How deep to lower

Lower until the dumbbells are about level with your chest, or a little below if your shoulders are comfortable there. In a ten-week trial, 50 men ranging from recreationally to highly trained were split between a full bench press, a two-thirds bench, a one-third bench and a group that stopped training; the full-range group improved the most on all three versions, and the partial groups improved less the shorter their range was.⁵ The American College of Sports Medicine's 2026 position stand also lists a complete range of motion among the things that enhanced strength.⁶ That trial used a barbell, but the lesson carries over: a press that stops short is a shorter exercise, not an easier version of the same one.

The dumbbell floor press

No bench? Lie on your back on the floor with your knees bent and feet flat, and press the dumbbells from there. The floor stops your upper arms at the bottom, so every rep ends a little short of a bench press, at about the point your elbows touch down. Pause there briefly rather than bouncing off the floor.

No study of the dumbbell floor press turned up in a PubMed search for this page; the four records that mention a floor press use it as a strength test or as one lift in a larger program. By the range-of-motion evidence above, it's a partial press, which suits a home setup or a second press in the week. If you have a bench, the full press is the main one. Other ways to press at home are on the chest workout.

Dumbbells and the barbell bench

If you want a bigger barbell bench, the barbell bench is the lift to train. In 36 trained men who pressed twice a week for ten weeks with dumbbells, a Smith machine or on an exercise ball, the dumbbell group improved more at the dumbbell press than at the presses it didn't train, the barbell bench among them, a pattern that showed up early and lasted.⁷ Train the version you want to get better at, and use the other as the second press of the week.

The common faults, and a fix for each

• Swinging the weights into place. Use your knees to get them up as you lie back, and the same knees to get back up. Dropping heavy dumbbells to the sides at the end of a set is how benches and floors get hit.
• Elbows straight out to the sides. Angle them out from your body instead, roughly between your sides and your shoulders.
• Dumbbells drifting apart or forward. Press up and slightly in, over your shoulders, and lower along the same path.
• Shoulders rolling forward at the top. Keep your shoulder blades back in the bench; lock out your arms, not your shoulders.
• Half reps. Bring the dumbbells to chest level every rep, with the weight you can control there.
• Pressing through something that hurts. Sore muscles the next day are normal; a sharp or lasting hurt in the shoulder or the chest isn't. Stop, and see a doctor or a physical therapist.

Sets, reps and where it goes

• Three sets of 8 to 12, stopping with a rep or two left. (How to judge reps left.) The ACSM's 2026 stand, which covers healthy adults, advises at least two sets per exercise.⁶
• As your main press, first on a chest or push day. The same stand found strength was enhanced for exercises done at the beginning of a session. As a second press after a barbell bench, two sets is usually plenty.
• Count your weekly sets. The stand found muscle growth was enhanced by ten or more sets per muscle group a week. Count every press and fly for the chest.
• Move up by reps, then by pair. Dumbbells jump in steps, so earn the next pair by reaching the top of your rep range on every set first. (Progressive overload covers the options.)

If you'd rather not plan it alone

The dumbbell press is easy to start; deciding whether it's your main press or your second one, how it shares a week with the barbell bench, and when to move to the next pair is the part a page can't do. Coaching is the version where your workouts are built around the days you actually have, and a weekly call looks at the week you just had and rebuilds the next one. Coaching to build muscle explains how that works, and here's how to apply. Otherwise: at your next chest session, do three sets of ten dumbbell bench presses and write down the pair.