Custom magnets

Our flexible custom magnets are made from iron (ferrite) powder mixed with a proprietary blend of rubber and plastic compounds, then pressed into sheets.

How it’s built (layer by layer):

• Magnetic base: Ferrite powder provides the magnetic properties
• Flexible binder: Rubber + plastic compounds make the magnet durable and bendable
• Printable face: A high-quality white vinyl top layer for crisp, vibrant printing

Each sheet is printed with your design and cut to match your unique shape.

Don’t let their size fool you—our custom magnets are thin, high-energy magnets with a pull strength of 317.36 kilograms per square meter. In other words, one square meter of magnet material can hold up to 317.36 kilograms.

What that means in real life:

• They can easily hold three sheets of standard 216 mm × 279 mm paper on a fridge.
• They can stay securely attached to cars at highway speeds.

Want to learn more? Check out our blog post How do magnets work?

Our custom magnets have a thickness of about 0.38 mm, or 15 mils (1 mil = 0.0254 mm). For reference, this is about the same thickness as our die cut stickers with the backing on.

Our acrylic magnets have a thickness of about 4 mm, or 158 mils, including the magnet itself.

Keep in mind that magnet thickness does not necessarily correlate with magnet strength. The strength of a magnet primarily depends on the quality of the raw materials and the manufacturing process.

With proper care, our custom magnets can last for many years. They’re made with durable materials and waterproof ink to keep colours vibrant.

Indoor vs. outdoor use:

• Indoors: Magnets used on a fridge or other indoor surfaces typically stay vibrant longer.
• Outdoors (including cars): Outdoor exposure (sun, rain, dirt, wind) can shorten lifespan. Our magnets can be used outdoors, but they don’t have a UV laminate, so magnets left in direct sunlight may fade faster.

How to make them last longer:

• Avoid extreme heat, moisture, and chemicals
• Minimize physical wear and tear
• Follow our proper care guide

Custom magnets stick best to ferromagnetic metals—materials with strong magnetic properties like iron and steel (and also nickel or cobalt).

They won’t stick to aluminum, copper, brass, and most stainless steel.

Common surfaces magnets stick to:

• Steel door refrigerators
• Metal filing cabinets
• Dishwashers with steel exteriors
• Whiteboards with a steel backing
• Metal doors
• Washing machines and dryers with steel exteriors
• Toolboxes
• Steel shelving
• Metal beams or frames

Not sure if something is magnetic? Touch a regular fridge magnet to it—if the fridge magnet doesn’t stick, your custom magnet won’t either.

Custom magnets come in any size from 19 mm × 19 mm up to 914 mm × 610 mm (91 cm × 51 cm).

On the order page, pick one of the common sizes—or choose Custom size to enter the exact dimensions you want.

Popular sizes by use case:

• Business card magnets: 51 mm x 89 mm
• Car magnets: 305 mm x 457 mm or 457 mm x 610 mm or 610 mm x 914 mm
• Fridge magnets: 51 mm x 51 mm or 76 mm x 76 mm
• Travel souvenir photo magnets: 76 mm x 102 mm
• Standard postcard size for family pictures: 102 mm x 152 mm
• Event keepsakes: 89 mm x 127 mm
• Large photos and decorative designs: 127 mm x 178 mm
• Calendars and schedules: 152 mm x 203 mm
• Dry-erase memo boards or meal planners: 216 mm x 279 mm

Your magnet can be cut to any custom shape that fits your artwork—not just circles, squares, or rectangles.

We can also add one inner cut if:

• The inner cut is at least 6.4 mm diameter
• There’s at least 6.4 mm of material between the inner cut and the outer edge

Not sure? No worries—our team will guide you during proofing.

Yes—our custom magnets are strong enough to adhere securely to cars and stay put at highway speeds, thanks to a pull strength of 317.36 kg/m².

When used correctly, flexible magnets generally won’t damage car paint. Most issues happen when dirt, moisture, or heat get trapped underneath the magnet, so we recommend the best practices below.

Best practices for car use

• Apply to a clean, flat metal surface (avoid dents, deep curves, or heavily contoured panels).
• Remove and reposition regularly—weekly is ideal.
• Each time you remove it, wipe away trapped dirt/debris and dry any moisture underneath before reapplying.
• Store flat when not in use to prevent warping.
• Don’t apply over decals or vinyl wraps.
• Avoid prolonged extreme heat (like direct sun for long periods), which can compromise the magnet backing.