Induction Adapter Plate: Does It Work, What Size to Buy and How to Use It
An induction adapter plate (also called an interface disk or converter plate) is a flat magnetic steel plate. The induction cooktop heats the plate, and the plate heats your aluminum, copper, glass or ceramic pan by contact, like an electric hotplate.
It works, but it is slower, wastes some of induction’s efficiency and gets very hot. Check your cooktop manual first: Wolf says interface disks do not work with its induction cooktops.
- Buy a plate at least as wide as your pan’s base and close to the size of your cooking zone.
- Small 5 to 6-inch plates suit moka pots. 8 to 11-inch plates suit saucepans and frying pans.
- Use medium heat. Turning the zone to maximum can overheat the plate and the glass.
- The plate stays hot for a long time after cooking. Lift it off with the handle and let it cool on a heat-safe surface.
- For daily cooking, induction-ready pans that pass the magnet test work better.
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How an induction adapter plate works
Induction cooktops heat cookware directly with a magnetic field. Whirlpool explains that only magnetic cookware works: if a magnet sticks firmly to the base, the pan is compatible. Aluminum, copper and glass usually are not, unless they have a magnetic base.
An adapter plate is magnetic, so the cooktop heats it. Many plates also have an aluminum layer to spread heat. Your pan then sits on the hot plate and heats by conduction, just as it would on a smooth electric burner.
Can I use an adapter plate on my induction cooktop?
It depends on the cooktop. Wolf states that interface disks do not work with Wolf induction cooktops, and that magnetic cookware is always required. Other makers may advise against them too, so read your use and care guide before you buy one.
Plates also run hotter than a pan normally would, because the heat has to pass through two layers. That extra heat sits on the glass. Use medium settings and never leave an empty plate heating.
What size induction adapter plate should I get?
Whirlpool advises matching the pan base to the size of the cooking zone. If a pan is too small, the zone may not sense it and will not switch on. The same applies to an adapter plate.
| Plate size | Good for |
|---|---|
| 5 to 6 inches | Moka pots, small milk pans, butter warmers |
| 7.9 to 8 inches | Small saucepans and 8-inch pans |
| 9.5 inches | Most saucepans and 10-inch frying pans |
| 11 inches | 12-inch frying pans and wide pots |
Choose a plate the same size as, or slightly larger than, the base of your pan. A pan that hangs over the plate edge heats unevenly.
Induction adapter plates on Amazon, by size
Most adapter plates are sold under small brand names, and we could not confirm their specifications on a maker’s website. The sizes below come from each Amazon listing title. Check the listing for thickness, handle type and return terms before you buy.
| Plate | Listed size | Use | Link |
|---|---|---|---|
| ESEVOLO detachable-handle plate | 5.5 in | Moka pots | Check price |
| Bialetti stainless steel induction plate | Small, for Bialetti moka pots | Moka pots | Check price |
| Ravto plate with detachable handle | 7.9 in | Small pans | Check price |
| Stainless steel adapter plate | 9.45 in | Saucepans, 10-inch pans | Check price |
| Difalbech detachable plate | 11 in | Large pans | Check price |
| Grourarty heat diffuser plate | 11 in | Large pans | Check price |
What to look for in an adapter plate
- Flat and thick: a flat, thick plate is less likely to warp and rattle.
- Layered build: a magnetic steel face with an aluminum core spreads heat more evenly.
- Handle: a detachable handle stores more easily; a fixed handle is quicker to grab.
- Size: match your pan base and cooking zone, as above.
- Clear returns: buy from a seller with easy returns in case your cooktop does not detect the plate.
How to use an induction adapter plate safely
- Check your manual. Make sure your cooktop maker allows interface disks.
- Center the plate. Place it in the middle of the cooking zone, then put the pan on top.
- Start on medium. Increase slowly. Plates heat up quickly and hold heat.
- Never heat an empty plate for long, and do not leave it unattended.
- Remove with care. Lift it by the handle onto a trivet. Do not slide it across the glass.
- Let it cool fully before washing or storing.
Adapter plate or new pans?
| Adapter plate | Induction-ready pans | |
|---|---|---|
| Cost | Low | Higher |
| Speed | Slower, like an electric hob | Fast |
| Control | Slow to respond | Responds instantly |
| Best for | One special pan, such as a moka pot or favorite copper pan | Everyday cooking |
If most of your pans fail the magnet test, new cookware is the better investment. See our guides to the best induction cookware and best nonstick pans for induction.
Frequently asked questions
Do induction adapter plates really work?
Yes, on cooktops that allow them. The cooktop heats the magnetic plate, which then heats your pan. It is slower and less responsive than cooking with induction-ready pans.
Can an adapter plate damage my induction cooktop?
It can if it overheats, because the heat sits on the glass. Some makers do not support them at all: Wolf says interface disks do not work with its induction cooktops. Check your manual.
What size adapter plate do I need?
One at least as wide as your pan’s base and close to the cooking zone size. Use a 5 to 6-inch plate for moka pots and 9 to 11 inches for frying pans.
Why won’t my cooktop detect the adapter plate?
The plate may be too small for the zone, not magnetic enough, or warped. Try a larger zone, or a thicker, flatter plate.
Can I use an adapter plate for canning?
We would not. Home canning depends on predictable heating and venting. Use a canner that its maker lists as induction-compatible instead.
The bottom line
An induction adapter plate lets you keep a favorite non-magnetic pan or moka pot, but it is slower and runs hot. Check your cooktop manual, match the plate to your pan and cooking zone, and use medium heat.
- Whirlpool Product Help, Induction Compatible Cookware: How to Tell.
- Sub-Zero, Wolf and Cove, Induction Interface Disks.
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