How To Tie Dumbbells Together

If you’ve ever wanted to combine weights for a different challenge, you might wonder how to tie dumbbells together. This simple method creates a secure and stable connection, turning two separate dumbbells into a single, makeshift barbell or kettlebell for unique exercises.

It’s a clever trick for home gym enthusiasts. You can increase load for exercises like rows, presses, or even squats without buying new equipment. The key is doing it safely and correctly to prevent accidents.

Let’s look at the why, the how, and the important safety tips.

This section provides the core method. You’ll need a few basic supplies and about five minutes of your time.

What You Will Need

Two Dumbbells: Ideally of the same weight and shape. Hex dumbbells are easiest to secure.
Strong Rope or Straps: Climbing rope, heavy-duty tie-down straps, or even a thick, woven dog leash. Avoid bungee cords or anything elastic.
Carabiner or D-Ring (Optional but Recommended): This makes the connection point much more secure and easier to tighten.
Duct Tape or Athletic Tape: For extra security and to prevent slippage.

Step-by-Step Tying Instructions

Follow these steps carefully to ensure your setup is safe.

Step 1: Prepare the Dumbbells

Place the two dumbbells side by side on the floor. Orient them so the handles are parallel and close together. If they have a hexagonal shape, use the flat sides to create a stable base against each other.

Step 2: Create the Initial Bind

Take your rope and wrap it tightly around both handles, right in the center. Make several passes—at least three or four full wraps. This initial friction is what holds everything in place initially.

Step 3: Secure with a Knot

After wrapping, you need a strong knot. A square knot or two half-hitches works well. If you’re using a carabiner, thread the rope ends through it before tying the knot. Pull the knot as tight as you possibly can. The dumbbells should not wiggle independently.

Step 4: Add Reinforcement

This is the critical step for a stable connection. Use your duct tape or athletic tape to wrap over the rope and the parts of the handles it covers. Do this generously. The tape prevents the rope from sliding and also adds a bit of rigidity to the whole assembly.

Step 5: The Final Check

Lift the connected dumbbells a few inches off the ground and give them a gentle shake. Listen and feel for any movement or slipping. If anything feels loose, add more tape or re-tie the knot. It’s better to over-secure than under-secure.

Why This Connection Method Works

The combination of rope and tape is effective for a few reasons. The rope provides the primary tensile strength, holding the weight together. The tape then adds massive friction, eliminating almost all micro-movements that could loosen the rope over time. It’s a simple but very functional solution.

Best Exercises for Tied Dumbbells

Once secured, your new tool opens up several exercise options. Remember to start with lighter weights than you normally use to get used to the balance.

Goblet Squats: Hold the connected dumbbells vertically by one end, cradled against your chest. This is a fantastic variation.
Two-Handed Rows: Bend at the hips, hold the center, and row the weight towards your stomach. It feels different than single-arm rows.
Floor Presses: Lie on your back and press the connected dumbbells like a barbell. It can help improve pressing stability.
Farmers Carries: Carry the assembly in one hand for a serious grip and core challenge. Just make sure your grip on the tape is secure.

Critical Safety Warnings

This method is a hack, not a manufactured product. Safety must be your top priority every single time.

Always Inspect: Check the rope, knots, and tape for wear before every use. Frayed rope or peeling tape means stop immediately.
Use a Spotter: For any exercise where the weight is over your head or chest, have a friend nearby. They can’t prevent a rope failure, but they can assist.
Start Light: Practice the movement with very light dumbbells first. The balance point and feel are different than a barbell.
Avoid Dynamic Lifts: Do not use tied dumbbells for explosive movements like cleans, snatches, or heavy swings. The sudden force can break the connection.
Mind Your Floor: If you drop them, the tape and rope can be damaged. Always set them down gently, especially as you get fatigued.

Alternative Connection Methods

If tying seems unreliable, consider these more permanent options.

Using a Lifting Belt

Thread a sturdy lifting belt through both dumbbell handles and buckle it tightly. The leather or nylon is very strong. This is often quicker than tying and untying rope, but can be bulkier to grip.

Specialized Connector Devices

You can actually purchase commercial dumbbell connectors online. These are usually metal or heavy-duty plastic clamps designed for this exact purpose. They offer the most secure and stable connection if you plan to do this regularly.

Common Mistakes to Avoid

Even with good instructions, people make errors. Here’s what to watch out for.

Using Weak Materials: That old clothesline or a thin shoelace will not hold. It will break.
Rushing the Process: Taking an extra two minutes to tighten and tape properly is non-negotiable.
Ignoring Balance: The center of mass is different. Don’t assume you can lift your normal barbell weight with this setup.
Forgetting the Knot: Just wrapping the rope isn’t enough. A proper knot is essential for security, it’s what locks the tension in place.

FAQ Section

Is it safe to tie dumbbells together for bench press?

It can be, but extreme caution is needed. Use a spotter, start very light, and never use this method for maximal or failure sets. The risk is higher with the weight over your face and chest.

What is the best knot for securing dumbbells?

The square knot (right over left, then left over right) is simple and strong for this application. For added security, follow it with two half-hitches around one of the standing rope parts.

Can I use this method with adjustable dumbbells?

It’s not recommended. The locking mechanisms on adjustable dumbbells are not designed for lateral stress. Tying them together could damage the selector pins or dials, leading to a dangerous failure.

How do I ensure a stable connection every time?

Follow a consistent checklist: 1) Tight wraps, 2) Tight knot, 3) Generous tape, 4) Pre-lift shake test. Never skip a step, even if your in a hurry.

Will duct tape damage my dumbbell handles?

It can leave a sticky residue, especially on rubber-coated handles. Using athletic tape first, then duct tape over it, can help. Always clean the handles with rubbing alcohol after removing tape to prevent long-term gunk buildup.

Tying dumbbells together is a useful technique for expanding your home workout options. It requires careful attention to detail and a respect for the risks involved. By choosing strong materials, following the steps precisely, and adhering to the safety guidelines, you can create a functional tool for your strength training. Remember, the goal is to train smarter and get stronger, not to take unnecessary chances. Always prioritize a secure setup over lifting heavier weight.