The Ultimate Guide to Mastering Incline Dumbbell Curls for Bigger Biceps

So, you want big arms. Heck yeah! Most of us gym rats do, too.

When it comes to biceps, it can sometimes be tricky to navigate which kind of curl is best, as there are approximately a thousand different forms.

But the same rule applies to biceps as with every other muscle:

The best exercise is one that fully stretches the target muscle(s) and has the most resistance at the bottom of the lift.

With that in mind, one of the best bicep curls in the business is the incline dumbbell curl, due to both its angle and isolation. Now let’s go build some muscular pew-pews.  

MUSCLES WORKED

• Biceps – the large pulling muscles at the front of your upper arms.  
• Forearms – because you can’t rip it if you can’t grip it!  

Incline dumbbell curl muscles worked: primarily the biceps brachii (long head emphasis) and the forearm flexors. If you’re curious about incline dumbbell curl muscles worked versus other curls, this move hits a deeper stretch, especially at the bottom.

HOW TO PERFORM A PROPER INCLINE DUMBBELL CURL

First things first: Get your head in the game. One of the biggest mistakes with curls is going too big too fast. If you’re just trying to curl the heaviest weight you can, you won’t accomplish much. Be honest with yourself and ditch the ego before choosing your weights. This applies especially to incline dumbbell curls or any exercise that isolates your biceps.

It’s also why this exercise is so effective: It removes the ability for the rest of your body to help your biceps hoist the weights up. They’re on their own—and it’s their time to shine.

SETTING UP YOUR BENCH

• Set your bench to an incline you can lean against without sliding.
• Make sure your feet are planted, and your setup is stable.

BENCH ANGLE

• Set the incline dumbbell curl angle between 45 and 65 degrees. Many lifters prefer 60 degrees for a balance of stretch, tension, and comfort.
• Experiment within that range to find your best incline dumbbell curl angle.

CHOOSING THE RIGHT WEIGHT

• Select a pair of dumbbells approximately half the weight you’d choose for standing curls. Adjust after the first set as needed.
• Prioritize a full range of motion, a deep stretch, and clean reps.

BODY POSITION

• Sit back on the bench with your shoulder blades pinched and your back slightly arched.
• Allow your shoulders to extend and the dumbbells to hang straight down. Let your arms dangle so gravity loads the biceps at the bottom.

EXECUTING THE CURL

• Curl the dumbbells with your palms facing forward until you squeeze hard at the top.
• Keep your elbows pinned near your sides—don’t let them drift forward.

TEMPO AND CONTROL

• Control the negative for 2–3 seconds.
• Pause briefly at full extension before your next rep.

BREATHING

• Inhale as you lower.
• Exhale as you curl and squeeze.

SEATED VARIATION

• Want extra stability? Try the seated incline dumbbell curl with your glutes and upper back anchored to the pad.
• The seated incline dumbbell curl keeps momentum low and tension high.

COMMON MISTAKES

• Going too heavy, swinging, or shrugging the shoulders.
• Cutting the range short at the bottom—don’t skip that quality stretch.

PRO TIPS

• Rotate your pinkies slightly up at the top to intensify the squeeze.
• Keep your wrists neutral—no bending.

INCLINE CABLE CURLS (ALTERNATIVE)

An alternative to the same exercise is on the cable machine. It’s simple to set up and maintains constant tension on the biceps. This is a strong incline dumbbell curl alternative when you want smooth load and easy micro-adjustments.

Here’s how to do incline cable curls:

• Set both sides of the cable machine somewhere between chest and shoulder height. Attach single handles to both sides.
• Select a medium weight so you can focus on the stretch and form.
• Grab both handles, step forward, and lean slightly with both arms fully extended behind you.
• From full extension, curl with your palms facing forward until you’re squeezing hard at the top.
• Control the negative until your arms are fully extended.

You can also use preacher curls as an incline dumbbell curl alternative if you want more elbow support and less shoulder motion.

Biceps are one of the most popular muscles to build, so give ’em a good stretch and build your peaks.

RECOMMENDED PRODUCTS FOR INCLINE DUMBBELL CURLS

Build the perfect setup with these benches and dumbbells from REP:

• QuickDraw™ Adjustable Dumbbell—compact, fast-adjusting dumbbells ideal for drop sets and small spaces.
• REP® x Pépin™ Fast Series™ Adjustable Dumbbell—premium feel with quick changes for precise loading.
• Rubber Hex Dumbbell Pairs—durable, grippy, and perfect for progressive overload.
• BlackWing™ Adjustable Bench—our top-tier, heavy-duty adjustable bench for rock-solid support.
• AB-5200 2.0—commercial-grade stability with easy angle changes for consistent positioning.
• Nighthawk™ Adjustable Bench—versatile, thoughtfully designed, and optimized for home gyms.

LEARN MORE  

• How to Properly Do Dumbbell Curls
• How to Do Barbell Curls with Perfect Form
• The Importance of an Incline Bench in Your Workout Routine
• 11 Different Pull-Up Hand Positions and the Muscle Groups They Target  
• The Best Adjustable Dumbbells for Beginners  

FAQs

What are the benefits of incline dumbbell curls?

You get a bigger stretch at the bottom, high biceps tension, and minimal cheating. That bottom-position load is ideal for hypertrophy.

What is the best incline dumbbell curl angle?

Start between 45 and 65 degrees. Many lifters like 60 degrees. Test different angles to see which feels best on your shoulders and biceps.

How often should I do incline dumbbell curls?

Train biceps 1–3 times per week, depending on your total program, recovery, and goals. Aim for 8–16 total sets per week across biceps exercises.

What muscles are worked by incline dumbbell curls?

Incline dumbbell curl muscles worked include the biceps brachii (especially the long head) and the forearm flexors.

What is the best incline dumbbell curl alternative?

Incline cable curls are a great incline dumbbell curl alternative thanks to constant tension. Preacher curls and spider curls also work well.

Is the seated incline dumbbell curl better than standing curls?

The seated incline dumbbell curl reduces momentum and increases stretch. Standing curls allow heavier loads and more variation. Use both across your training blocks.