🔎 What Is an Induction Cooktop? (How It Actually Works)
If you've searched "what is an induction cooktop," here's the short answer: it's a cooktop that heats your cookware directly using a magnetic field, instead of heating an element or burning gas underneath a pan. It looks like a flat glass ceramic surface — similar to a radiant electric cooktop at a glance — but the way it generates heat is completely different, and that difference changes almost everything about how it cooks, how safe it is, and what it costs to run.
How induction actually works
Beneath the glass surface sits a coil of copper wire under each cooking zone. When you switch a zone on, an electronic inverter drives alternating current through that coil at a high frequency (typically in the tens of kilohertz), which creates a rapidly alternating magnetic field directly above the coil. This is the same basic physics — electromagnetic induction — behind wireless phone chargers and transformers, just applied at higher power.
When you place a ferromagnetic pan on top of an active zone, that alternating magnetic field induces small circulating electrical currents (called eddy currents) directly inside the base of the pan. The pan's own electrical resistance converts those currents into heat — so the pan itself becomes the heating element. The glass cooktop surface is basically just along for the ride: it doesn't generate heat, so it stays far cooler than a gas flame or a traditional radiant electric element, warming only from contact with the hot pan base.
Why that matters day-to-day
- Speed — because the pan heats directly rather than waiting for an element to heat up and radiate heat across an air gap, water typically comes to a rolling boil in roughly half the time of a ceramic electric cooktop at a comparable wattage.
- Precision — power adjusts almost instantly, similar to gas, with no lag waiting for a coil to heat or cool. Turn the dial down and the heat drops immediately, which matters for anything that can scorch quickly — melting chocolate, reducing a sauce, finishing a delicate fish fillet.
- Safety — the surface around your pan stays cool to the touch because it isn't the thing generating heat, and most zones auto-detect when a pan is lifted off and cut power within a second or two.
- Efficiency — less energy is wasted heating the surrounding air and glass, which is a large part of why induction typically costs less to run per meal than ceramic electric for the same cooking task.
The catch: magnetic cookware only
Because the technology relies on inducing current in a magnetic material, non-magnetic cookware — pure aluminium, copper, and most glass or ceramic cookware — won't heat at all, or will barely register. Cast iron and most stainless steel cookware work well, since both are ferromagnetic enough to couple efficiently with the field. See our cookware compatibility guide for the quick fridge-magnet test that tells you in seconds whether a pan will work.
Is it the same as "electric"?
Loosely, induction is a category of electric cooktop — it plugs into (or is hard-wired to) your home's electricity supply rather than gas. But it behaves very differently from the older ceramic/radiant electric cooktops still common in Australian rentals, which heat a coiled metal element that then radiates heat upward through the glass. See our full induction vs electric comparison for the detailed differences in speed, running cost and cleaning.
Common misconceptions
"Induction cooktops are dangerous because of the magnetic field." The field is designed to couple efficiently with a pan directly on the surface and drops off very quickly with distance — by the time it reaches a person standing at a normal cooking distance, exposure is well within international safety limits set by bodies like the International Commission on Non-Ionizing Radiation Protection. If you or a household member has a pacemaker or other implanted medical device, check with your device manufacturer or treating specialist, which is standard advice for any induction appliance.
"Induction cooktops can't sear or wok-cook properly." This was true of early, underpowered domestic models, but modern induction zones — especially boost/power-boost functions — can match or exceed gas wok burners for raw heat output, provided you're using a flat-base pan matched to the zone size. See our wok guide for specifics.
Should you switch?
For most Australian kitchens in 2026, yes — induction is faster, safer around kids, and cheaper to run per meal than both gas and ceramic electric, provided your cookware is compatible and your electrics can support it (see our installation guide). Browse popular induction cooktops on Amazon AU or take our quiz to find one that fits your kitchen.
Frequently asked questions
Does induction cooking use more electricity than a normal electric cooktop?
No — for the same amount of food cooked, induction typically uses less total electricity than radiant/ceramic electric, because more of the energy goes directly into the pan rather than being lost heating the surrounding glass and air. See our running costs guide for the detail.
Can I install an induction cooktop myself?
No. A built-in induction cooktop must be connected by a licensed electrician in every Australian state and territory — see our installation guide. Portable plug-in units don't require an electrician.
Is induction cooking healthier?
Induction doesn't produce a naked flame or combustion byproducts the way gas does, so it doesn't add nitrogen dioxide or other combustion gases to indoor air — a factor some households weigh alongside cost and speed when switching from gas.
Sources & further reading
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