Quick answer: Yes - cast iron works on induction cooktops. Cast iron is magnetic, and induction hobs heat magnetic cookware directly, so cast iron is one of the best materials for induction cooking. It heats a little slower than thinner pans but retains heat exceptionally well once hot, giving you steady, even cooking that induction-safe non-stick cannot match long-term.
If you have recently switched to an induction cooktop or are planning to, one of the first questions is whether your cast iron can come with you. Good news: it can - and it often performs better on induction than the cheap induction-specific pans most people buy to replace it. Here is everything you need to know.
Why Cast Iron Works on Induction
Induction cooktops work by generating a magnetic field that heats magnetic cookware directly. Cast iron is highly magnetic, which makes it one of the most induction-compatible materials available. The base of a cast iron tawa or kadai couples strongly with the induction coil, drawing current efficiently and heating the iron evenly.
How Cast Iron Behaves on Induction
There are two differences worth knowing compared to gas:
- It heats more slowly at first. Cast iron's mass means it takes a few extra minutes to reach temperature on induction. Once hot, it holds that heat brilliantly - so preheat on medium rather than high, and give it time.
- Heat concentrates in the coil zone. Induction heats the area above the coil, so the centre of a large tawa or kadai heats faster than the edges. Rotate the pan occasionally if cooking near the edges, or use a lower setting and give the heat time to spread through the iron.
Neither of these is a problem once you know about them - they just need a slight adjustment in technique.
Cast Iron vs Induction-Safe Non-Stick
| Cast Iron on Induction | Non-Stick on Induction | |
|---|---|---|
| Heat retention | Excellent | Poor |
| Lifespan | Decades | 2-4 years |
| Health | Toxin-free, adds iron | Chemical coating |
| High heat | Handles well | Damages coating |
| Weight | Heavy | Light |
| Gets better with use | Yes | No |
Tips for Using Cast Iron on Induction
- Preheat on medium, not high. Induction is powerful - medium is enough for cast iron and prevents thermal shock to the pan.
- Use a flat-bottomed piece. Induction needs good contact between the base and the hob. A flat cast iron tawa or kadai base sits flush and heats efficiently.
- Do not slide the pan. Sliding heavy cast iron can scratch the glass induction surface. Lift and place instead.
- Give it time to heat evenly. Add an extra minute of preheating compared to gas, especially for tawas where edge-to-centre evenness matters for dosa.
Seasoning Cast Iron on Induction
The stovetop seasoning method works perfectly on induction - same thin-oil, medium-heat, smoke-till-it-stops approach. Our guide on how to season cast iron without an oven covers both gas and induction in detail.
Frequently Asked Questions
Does all cast iron work on induction?
Yes - all cast iron is magnetic and induction-compatible. Check the base is flat so it contacts the hob properly.
Why does my cast iron heat unevenly on induction?
The induction coil heats the centre faster than the edges. Use a lower setting and give the heat extra time to spread through the iron, or rotate the pan occasionally.
Can I use a cast iron tawa on an induction cooktop for dosa?
Yes. Preheat on medium for 4-5 minutes, do the water-drop test, then lower slightly before pouring batter. The technique is the same as gas - just allow a little longer for preheat.
Will cast iron scratch my induction hob?
It can if slid across the glass. Always lift cast iron off the surface rather than sliding it. Place it down gently - the weight does the rest.
Is cast iron better than induction-specific non-stick?
For long-term everyday cooking, yes. Cast iron lasts decades, is toxin-free, and performs better at high heat. The only trade-off is weight and preheat time.
All Neopot cast iron is induction compatible. Explore our pre-seasoned cast iron tawa collection, the full cast iron kadai range, and the complete cast iron cookware collection - all flat-based and ready for induction from day one.