What Pans Work on Induction? The Magnet Test and Every Material, Explained
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What Pans Work on Induction?

Any pan with enough iron in its base, sitting flat and big enough to be detected. Here is how to check the pans you already own, material by material, and what the hob's buzzing is telling you.

Alex Rivers

Alex Rivers

Home Improvement Editor

A pan works on induction if its base contains enough ferromagnetic metal for the hob's magnetic field to grab: cast iron, carbon steel, enameled steel and most clad stainless all do, while bare aluminum, copper, glass and ceramic do not. A fridge magnet that grips the base firmly is a good test, not a perfect one. A weak grip means a pan that will work slowly and noisily, and a base smaller than the cooking zone may not be detected at all, however magnetic it is.

1. Why Induction Is Picky About Pans

A gas burner or a radiant electric ring makes heat and then pushes it into whatever sits on top. Induction does not make heat at all until a pan arrives. Under the glass is a flat copper coil carrying an alternating current that reverses direction tens of thousands of times a second. That creates a rapidly changing magnetic field just above the surface, and when a suitable pan sits in that field, currents are induced in the metal of its base. The resistance of the metal to those currents is what produces heat, and in iron-rich metals the constant flipping of magnetic domains adds more on top.

The word that matters is suitable. The effect works best in a metal that is both ferromagnetic and relatively resistive, which is a description of iron and steel. Aluminum and copper conduct electricity so well that the induced currents meet almost no resistance and generate very little heat at the frequencies a home hob runs, and glass and ceramic do not conduct at all. Put a copper saucepan on a standard induction zone and the electronics see almost nothing there; most hobs will flash a pan-missing indicator and then switch the zone off after a short wait.

This is the whole reason the cookware question exists, and it is also the source of induction's advantages. Because the pan itself is the heating element, almost no energy is wasted heating air around the sides, the glass stays relatively cool away from the pan, and the response to a change in setting is close to instant. We go through those trade-offs in detail in our induction vs gas cooktop comparison, but for this guide the takeaway is simple: the pan is half of the appliance, and the wrong pan cripples the hob.

The same principle turns up elsewhere in the kitchen. The better rice cookers use an induction coil around a metal inner pot instead of a hotplate underneath it, which is why IH models heat more evenly; our rice cooker guide covers when that upgrade is worth paying for. In both cases the manufacturer controls the vessel. With a cooktop, you supply it, and that is where things go wrong.

So the useful question is not just does this pan work, but how well. Induction compatibility is a spectrum. A heavy cast iron skillet couples superbly, a fully clad stainless pan with a magnetic outer layer couples very well, an aluminum nonstick pan with a small perforated steel disc pressed into the base couples adequately, and a pan that only just passes the magnet test may heat at half speed and hum the whole time. If you are buying new, the pans in our best induction cookware guide sit at the strong end of that spectrum for a reason.

2. How to Tell If a Pan Is Induction Compatible: The Magnet Test and Its Limits

Take any fridge magnet and hold it against the outside of the pan's base, not the side and not the inside. If it snaps on and you have to pull to remove it, the pan will work. If it does not stick at all, the pan will not work on a standard induction hob. That one test settles the question for the large majority of pans in a typical cupboard, and it costs nothing, which is why every cooktop manual and our own pillar guide lead with it.

Check the base specifically, and check more than one spot. Plenty of pans have a non-magnetic body with a magnetic plate bonded only to the bottom, so a magnet slides off the walls but grabs the base. Some have a plate that covers only the middle two-thirds, which you can find by sliding the magnet outward from the centre until it lets go. Where it lets go is the edge of the usable heating area, and a pan whose magnetic disc is much smaller than its base will heat a bright circle in the middle and leave a cooler ring outside it.

Here is where the test is good but not perfect. It is a yes or no answer to a question that has a range of answers. A magnet that grips weakly, or slides down a tilted base, usually means a thin magnetic layer, a perforated disc with a lot of holes, or a stainless alloy that is only faintly magnetic. Those pans will usually be detected and will heat, but slowly, often with more noise, and some hobs will limit the power they deliver or drop the pan intermittently at low settings. A strong grip is a better predictor of good performance than a weak one is of failure.

There are two other checks worth knowing. The first is the induction symbol, a horizontal coil that looks like a stretched spring, stamped on the base or printed on the packaging. It is a manufacturer's claim rather than a regulated certification, so treat it as a strong hint and confirm with the magnet. The second is the hob itself: put an inch of water in the pan, set it on the zone at a middle setting, and watch. If the display flashes a pan-missing symbol or the zone shuts off, it is not being detected. If the water starts moving within a minute or two, it works, and timing how long a quart takes to boil against a pan you know is good tells you how well.

THE FAST VERDICT

Strong grip on the base: buy it or keep it. Weak grip: it will work, slowly. No grip: it will not work.

Slide the magnet from the centre of the base to the rim. Where it lets go is the edge of the magnetic plate, and that tells you how much of the pan the hob can actually heat.

3. Can You Use Stainless Steel on Induction? 18/0, 18/8 and 18/10

Usually yes, but stainless steel is a family of alloys, and the family splits cleanly on this question. The numbers stamped on cookware give the chromium and nickel content. 18/10 means roughly 18 percent chromium and 10 percent nickel, and 18/8 is the same idea with slightly less nickel; both are versions of the alloy usually called type 304. Nickel changes the crystal structure of the steel into what metallurgists call austenitic, and austenitic stainless is essentially non-magnetic. A pan made entirely of 18/10 will not work on induction.

18/0 has the chromium but no nickel, and it is a ferritic steel, usually type 430. Ferritic stainless is magnetic and works on induction. It is cheaper and a little less corrosion resistant than 18/10, which is why makers rarely use it for the cooking surface on premium pans and frequently use it for the outer layer. That combination is the answer to the confusion: an 18/10 interior for the food, an aluminum core for even heating, and a magnetic stainless exterior for the hob.

That is exactly how All-Clad builds its D3 line, the overall pick in our induction cookware roundup. All-Clad states that D3 has a magnetic stainless exterior and is induction compatible, and the same three-layer logic applies to the Tramontina Tri-Ply Clad set that is our value pick. Demeyere goes a step further on its Atlantis line and engineers the base specifically for induction, with the magnetic layer running across the full diameter. If a clad pan's marketing mentions an 18/10 interior and an 18/0 or magnetic exterior, it will work. If it mentions 18/10 throughout with no exterior layer, check before you buy.

One trap catches people with older stainless. Type 304 is non-magnetic as made, but heavy forming, such as deep-drawing a pot, can leave parts of it faintly magnetic. A fridge magnet may cling weakly to the base of an old all-18/10 stockpot and then fail to hold when you tilt it. That faint attraction is not enough for a hob to work with. This is the clearest example of why a weak grip should be read as probably not, or poorly, rather than yes.

Disc-bottom stainless, where a thick capsule of aluminum is sealed under a steel plate on the base only, also works if the plate is magnetic, which it nearly always is on anything sold in the last decade. The difference from fully clad cookware is in the walls, not the base: the sides of a disc-bottom pot stay cooler because no aluminum runs up them. For stockpots and saucepans that hardly matters. For sauté pans and skillets, fully clad is worth the money.

Stainless type Magnetic? Works on induction?
18/10 or 18/8 (type 304), single layer No, or only faintly No
18/0 (type 430) Yes Yes
Tri-ply or 5-ply with magnetic exterior Yes on the outside Yes, very well
Disc-bottom with magnetic base plate Base only Yes, walls heat less
Clad with non-magnetic exterior No No, check the spec

4. Material by Material: Iron, Steel, Aluminum, Copper, Nonstick, Glass

Cast iron and enameled cast iron: excellent

Cast iron is about as good as induction cookware gets. It is thick, highly magnetic and heavy, so it couples strongly, runs quietly, and holds its temperature when cold food goes in. Enamel on the outside does not block the field, which is why an enameled Dutch oven like the Le Creuset in our pillar guide works perfectly. The one real downside is the glass: a rough cast base slid across the hob will scratch it, so lift, do not drag. We cover heat-up behaviour, warping and scratching in does cast iron work on induction.

Carbon steel and enameled steel: excellent, with care

Carbon steel skillets and flat-bottomed woks are mostly iron and couple as well as cast iron, but they are thinner and lighter, so they heat faster and are more prone to warping if blasted empty on boost. A warped carbon steel pan spins and rattles on flat glass. Enameled steel, the thin porcelain-on-steel used for stockpots, kettles and roasting pans, also works well, but its thin walls create hot spots and the enamel can crack if the pan is heated dry at full power. Use a middle setting and something in the pan.

Aluminum and copper: only with a bonded steel base

Bare aluminum and bare copper do not work on standard home induction. Their electrical resistance is too low for the hob to heat them, however thick the pan is. Both become compatible only when the maker bonds a magnetic steel plate to the base, either fully encapsulated or as a perforated disc pressed into the aluminum. Copper cookware sold as induction-ready works the same way, with a steel layer on the outside of the base. There are commercial all-metal induction units, such as Panasonic's Met-All line, that run at higher frequencies to heat aluminum and copper, but standard residential hobs are not built that way.

Nonstick: depends entirely on the base

Nonstick is a coating, not a material, so the question is what is underneath it. Most nonstick pans are aluminum bodies, and the induction-ready ones have a steel plate on the base; look for the visible disc or the coil symbol. That includes so-called ceramic nonstick, which is a sol-gel coating on an aluminum pan rather than a ceramic body. Hybrid pans like the HexClad in our roundup are built on a magnetic tri-ply base and work well. Pans with only a small pressed-in disc work, but the coupling is weaker and the outer ring of the pan runs cooler.

Glass, ceramic, stoneware and clay: no

Borosilicate glass, solid ceramic, stoneware, terracotta and clay cookers do not conduct electricity and will never be detected. A few are sold with a metal plate fused to the base, and those work at reduced speed; otherwise an interface disk is the only route. Before using one on a disk, check the maker's guidance, because rapid, concentrated heat from a hot metal plate is not what most ceramic pieces are designed for. And whatever the material, follow the cookware maker's care instructions over the machine's: most nonstick and bare aluminum makers recommend hand-washing because dishwasher detergent is hard on coatings and exposed aluminum, while clad stainless and enameled pieces generally cope; our dishwasher guide covers the machines themselves.

Material Works on induction? Notes
Cast iron, enameled cast iron Yes, excellent Lift, do not slide
Carbon steel Yes, excellent Flat-bottom woks only
Enameled steel Yes Thin, prone to hot spots
Clad stainless, magnetic exterior Yes, very good Check for 18/0 or magnetic outer layer
All-18/10 stainless No Weak magnet grip is misleading
Aluminum Only with steel base plate Disc size limits heating area
Copper Only with steel base layer Sold as induction-ready
Nonstick Depends on base Look for the disc or coil symbol
Glass, ceramic, stoneware, clay No Interface disk only

5. Base Size, Flatness and Shape: The Pan Has to Be Detected

Magnetism is necessary but not sufficient. Every induction zone has a minimum amount of magnetic base it needs to see before it will switch on, which stops the hob from heating a dropped spoon or a ring. Manufacturers state this differently. Some list fixed minimum base diameters per zone, commonly in the range of about 4 to 6 inches depending on the size of the element. Others express it as a share of the zone's diameter. Several European makers put the general floor at roughly 12 to 14 centimetres, about 4.7 to 5.5 inches. Your cooktop manual has the exact figures, and it is worth looking them up before buying small pieces.

The pans that fall foul of this are predictable: small milk pans, butter warmers, two-cup moka pots, tiny egg pans and espresso jugs. A stainless moka pot sold as induction-ready can still fail to register on a large zone simply because its base is too narrow. The fix is to use the smallest zone on the hob, which nearly always has the lowest detection threshold. If even that will not pick it up, the pan is too small for that cooktop.

Measure the magnetic part of the base, not the rim. Pans are sold by their top diameter, and the flat part of the base on a flared skillet can be two or three inches smaller than the number on the label. On pans with a bonded disc, the magnetic area can be smaller again. A 10-inch skillet with a 6-inch disc behaves like a 6-inch pan for detection, and the outer few inches are heated only by conduction through the aluminum.

Going too large has the opposite problem. The coil heats the part of the pan directly above it, so a 12-inch skillet on a 7-inch zone has a hot centre and a cooler outer ring. Good cladding spreads that heat sideways; thin pans do not. If you routinely cook in large pans, match them to the largest zone, or look for a hob with a bridge or flexible zone that can combine two coils under one pan.

Shape and flatness matter too. Induction can work across a small gap, so a slightly domed base still heats, but the field weakens quickly with distance, so coupling suffers, and a pan that rocks will vibrate, buzz and give the temperature sensor under the glass a poor reading. Round-bottomed woks touch the glass at a single point and heat poorly on a flat hob; use a flat-bottomed wok or a dedicated wok zone. Pans with deep logos or rings embossed in the base can also be noisier. A flat, smooth, full-width base is what the hob wants.

6. Interface Disks: The Workaround and What It Costs

An interface disk, also sold as a converter disc or induction adapter plate, is a flat plate of magnetic steel, often with an aluminum core, that sits on the induction zone. The hob heats the disk, and the disk heats your non-compatible pan by contact, just like an electric hotplate. It is the only way to use a copper saucepan, a glass percolator or a beloved aluminum pan without replacing it, and for an occasional job it is a reasonable answer.

The cost is everything that made induction worth having. Heat now has to pass from the coil into the disk, then across the contact between the disk and the pan, losing some to the air at every step. Reports from users and testers commonly put boil times at roughly double or more compared with a compatible pan, and the exact penalty varies with the disk's thickness and how flat both surfaces are. Responsiveness disappears too, because the disk has its own thermal mass to heat and cool. You are, in effect, cooking on a slow electric coil that happens to sit on an induction hob.

There is also a risk to the hob. A disk gets far hotter than a pan full of food, and it concentrates that heat on one patch of glass. Several cooktop makers advise against adapter plates, or against using them for long periods, because of the thermal stress on the ceramic glass and the electronics underneath. Some hobs will also cut power when the sensor under the glass sees that temperature, which makes the slow disk slower still. Read your manual before buying one; if it says not to, take that seriously, because damage caused against the instructions is a common exclusion in cooktop warranties.

Used sparingly, a good disk is fine: warming milk in a copper pan, making coffee in an aluminum moka pot, keeping a ceramic dish warm. As a permanent strategy it is a poor deal. If you find yourself reaching for the disk every day, the cheaper long-term fix is to replace the two or three pans you use most. A single fully clad skillet and a Lodge cast iron pan cover most daily cooking, and both are covered in our best induction cookware picks. If you are still deciding whether to go induction at all, a kitchen full of copper and aluminum is a fair point in the gas column, which we weigh in induction vs gas.

Interface Disk Trade-Offs

2x+

Typical boil time vs a compatible pan

Slow

Response to setting changes

Hot

Glass under the disk

Check

Your manual before using one

7. Buzzing, Humming and Clicking: What the Noise Means

New induction owners are often surprised that the hob makes noise, and the pan is usually the cause. A low hum or buzz at high power is the most common sound. The rapidly alternating field makes the pan vibrate very slightly, and in multi-ply cookware the bonded layers of different metals can vibrate against each other, which some manufacturers describe as a crackle. Cooktop makers including Miele, Whirlpool and Wolf describe these sounds as normal operation, not a fault.

Pan construction decides how loud it gets. Heavy cookware is quieter: Wolf notes that heavier enameled cast iron produces less noise than lighter multi-ply stainless. Thin, light pans, pans with a small pressed-in disc and pans with embossed logos or rings on the base tend to be the loudest, and a pan that does not sit flat can rattle audibly. This ties back to the magnet test: the same pans that grip a magnet weakly are often the ones that buzz, because a thin or partial magnetic layer is being driven harder to deliver the same heat.

A regular clicking at low and middle settings is a different thing. Many hobs regulate low power by switching the coil on and off in a cycle rather than delivering a continuously low output, and the switching electronics make a soft tick as they do it. It is most noticeable on a gentle simmer and usually disappears at high power. A whirring that continues after you switch off is the cooling fan protecting the electronics, and it will stop on its own once the hob has cooled.

Some practical fixes help. Centre the pan on the zone, make sure the base is clean and dry, and avoid running a light pan on boost when a middle setting would do. Do not put two pans on a bridged zone if the manual says not to. Fill the pan, because an empty pan is usually louder than a full one. If a particular pan is unbearable, that is a reasonable reason to retire it; heavy clad stainless and cast iron are the quietest options. A grinding, a burning smell or an error code is not normal, and that is a call for service, not a cookware change.

NORMAL VS NOT

Hum at high power, tick at low power and a fan after switch-off are normal. Grinding, burning smells and error codes are not.

Noise that follows one pan from zone to zone is the pan. Noise that happens on one zone with every pan is the hob, and that is worth reporting under warranty.

8. Common Mistakes to Avoid

Testing the side instead of the base

A magnet that slides off the wall of a pan tells you nothing. Many induction-ready pans have a non-magnetic body with a magnetic plate only on the base, so test the outside bottom, and slide the magnet to the rim to find how far the plate reaches before deciding a pan is useless.

Reading a weak grip as a yes

Faint attraction usually means a thin or perforated magnetic layer or a cold-worked 18/10 pot that is barely magnetic. Those pans either fail to register or heat slowly and noisily. Treat a weak grip as a probably-poorly and do a timed boil test before relying on the pan for everyday cooking.

Buying by the rim diameter

Pans are labelled by their top diameter, but the hob detects only the magnetic area of the flat base, which can be several inches smaller. A small pan on a large zone may never switch on. Check your manual's minimum pan sizes and measure the base, not the rim, before buying small pieces.

Living on an interface disk

A converter disk turns induction into a slow hotplate, commonly doubling boil times and stressing the glass with concentrated heat. Some cooktop makers advise against them entirely. It is fine for an occasional copper pan or moka pot, but replacing the two or three pans you use daily is the better fix.

Sliding heavy pans across the glass

Cast iron and carbon steel work brilliantly on induction, but a rough base dragged across the cooktop leaves permanent scratches, and grit trapped underneath makes it worse. Lift pans on and off, keep the base and the glass clean, and the best induction cookware will not damage the hob it works best on.

9. Frequently Asked Questions

What pans work on induction?

Any pan with enough ferromagnetic metal in its base: cast iron, enameled cast iron, carbon steel, enameled steel, and stainless steel with a magnetic exterior or base plate. Aluminum, copper and nonstick pans work only if a steel plate is bonded to the base. Glass, ceramic, stoneware and clay never work on a standard home induction hob.

Can you use stainless steel on induction?

Usually, but not always. 18/0 stainless is magnetic and works. 18/10 and 18/8 are essentially non-magnetic and do not work on their own, which is why clad pans pair an 18/10 interior with a magnetic stainless exterior. All-Clad D3, Tramontina Tri-Ply Clad and Demeyere Atlantis are all built that way. Test the base with a magnet.

How do I tell if a pan is induction compatible?

Hold a fridge magnet to the outside of the base. A firm grip means it works well, a weak grip means it will work slowly if at all, and no grip means it will not work. Look for the coil symbol on the base too, and if unsure, put an inch of water in the pan and see if the zone detects it.

Does the induction symbol guarantee a pan will work?

It is a strong indication but not a guarantee. The coil symbol is a manufacturer's claim, not a regulated certification, and it says nothing about how well the pan couples or whether its base is large enough for your largest zone. Confirm with a magnet on the base and check your cooktop's minimum pan size.

Why won't my induction hob detect my magnetic pan?

Most often the magnetic part of the base is too small for the zone. Every zone has a minimum detection size, commonly about 4 to 6 inches depending on the element. Move the pan to the smallest zone and centre it. If it still is not detected, the magnetic layer is too thin or too small for that cooktop.

Do induction interface disks work?

They work, but they turn induction into a slow hotplate. The hob heats the disk and the disk heats the pan by contact, so boil times commonly double or worse and responsiveness disappears. The disk also concentrates heat on the glass, and some cooktop makers advise against them. Fine occasionally; a poor permanent solution.

Why does my pan buzz on induction?

The alternating magnetic field makes the pan vibrate slightly, and in multi-ply pans the bonded layers can vibrate against each other. It is normal and loudest at high power with light pans. Clicking at low settings is the hob cycling power on and off. Heavy cast iron and well-made clad pans are the quietest.

The Bottom Line

If a magnet grips the base firmly and the base is big enough for the zone, the pan works on induction, and most cast iron, carbon steel and clad stainless in a typical kitchen will pass. Bare aluminum, copper, glass and ceramic will not, and an interface disk is a slow stopgap rather than a fix. Weak grips, small discs and tiny bases are the grey zone where pans work badly rather than not at all.

If you are replacing pans, buy for the hob: fully clad stainless with a magnetic exterior, a cast iron skillet and an enameled Dutch oven cover nearly everything, quietly and quickly. Our best induction cookware guide has the specific pieces worth the money.

Alex Rivers

About the Author

Alex Rivers, Home Improvement Editor

Alex has spent over a decade working on residential and light commercial property maintenance, and now tests every tool, coating and machine that appears in these guides personally.

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