FREE SHIPPING U.S. >= $10 FREE SHIPPING ON ALL U.S. ORDERS OF $10 OR MORE
EASY RETURNS
SAME DAY SHIPPING
FREE SHIPPING ON ALL U.S. ORDERS OF $10 OR MORE
  • EASY RETURNS
  • SAME DAY SHIPPING
  • FREE U.S. SHIPPING $10+ FREE SHIPPING ON ALL U.S. ORDERS OF $10 OR MORE
  • EASY RETURNS
  • SAME DAY SHIPPING
* Customers must select the Standard Shipping option during checkout in order to receive Free Shipping. If you select Priority or Overnight Shipping additional charges will apply. Not valid on international shipments.

Will stacking magnets together make them stronger?

The answer is yes! By adding one disc magnet or block magnet on to the other, e.g. stacking, the stacked magnets will work as one bigger magnet and will exert greater magnetic performance. This does not apply to cylinder magnets and sphere magnets.

Two identical disc or block magnets stacked together are almost twice as strong as one magnet as long as the thickness of the stack does not exceed the width/diameter of the stack.

The taller the N-S N-S N-S stack is, the more intense the magnetic field at the end of the stack will be. However, the magnetic field, and the total pull strength, as a proportion of the amount of magnet area increases slower and slower as the stack grows (logarithmically).

When you stack magnets, they behave as a single unit, with the length being the sum of the individual magnets. This increases the overall magnetic flux, resulting in a stronger pull.

Plus, the power of a magnet isn't only about its pull force, but also the reach of its magnetic field. While a stacked magnet has a stronger pull force, its magnetic field doesn't extend twice as far. So, even though the pull force increases, the overall magnetic field distance isn't doubled.

The following chart helps illustrate this concept by showing how the pull force of a 1/4 inch diameter disc magnet increases as you double the thickness.


Pull Force Chart

The Final Word on Stacking Magnets

So, the next time you're browsing through our vast selection of magnets, remember that stacking two or three disc or block magnets together dramatically increases the magnet's power, but doesn't completely double or triple it in terms of pull force.

Beyond that, three or four more magnets stacked together does not continue to dramatically affect the stack’s pull force or magnetic field - and offers diminishing returns for the best strength/weight versus cost equation.

If you have any further questions about how two or more magnets stacked together may perform as one magnet, please don’t hesitate to contact us.


Related Articles

The Best Way to Separate Strong Magnets
Instead of trying to pull strong magnets apart, firmly slide and/or twist them away from each other and far enough ap...
Read More
Can I drill or machine neodymium magnets?
Generally speaking, no. All neodymium magnets, while solid and hard, are also very brittle. The hardness of the neody...
Read More
Can neodymium magnets be engraved with a laser?
Yes, magnets can be engraved with a laser. Laser engraving is a process in which a laser beam is used to etch a desig...
Read More
What is the best way to work with self-adhesive magnets?
Self-adhesive magnets enable you to attach the magnet to a non-magnetic surface, such as aluminum, wood, plastic, cer...
Read More
How are steel strike plates and magnets used most effectively?
Steel discs (often called strike plates) offer added flexibility when working with magnets. They can be used in place...
Read More
What materials can I use to block/shield magnetic fields?
Do you find yourself grappling with the concept of magnetic shielding? Pondering if it's feasible to have a magnet ex...
Read More