Best Pizza Stone: Stones vs Steels, by the Numbers

Shopping for the best pizza stone feels like asking three friends for a restaurant recommendation and getting four answers. One test kitchen says buy steel. Another says cast iron. A grilling site says cordierite, and steel only belongs on a charcoal grill.

They can’t all be right about your oven. So I went through the published test results, pulled the weights and dimensions of every model, and ran the heat math myself. No, I didn’t bake on ten slabs — this is a buyer’s guide built on other people’s measurements and some basic physics, and I’ll show my work.

Three Test Kitchens, Three Different Winners

Start with the people who actually bake on these things. America’s Test Kitchen put steels at the top of its rankings, above every stone it tried. Its testers found steel-baked crusts slightly more tender and airy, and stone-baked crusts a touch drier and chewier.

Food Network’s shopping team bought 10 models, baked the same cheese pizza at about 525°F, and named a Lodge cast iron pizza pan best overall, with the Original Baking Steel a close second.

Then there’s Vindulge, a respected grilling blog, which calls cordierite the clear winner and says its authors only reach for steel on a grill. That’s nearly the opposite of the ATK verdict.

Here’s the thing, though. They’re mostly not contradicting each other. They’re cooking in different places, for different pizzas, and weighting different things. Once you know what each material is actually good at, the three verdicts line up neatly.

The “18 Times More Heat” Claim, Checked

You’ll see one number repeated everywhere in this debate. In a 2016 guest post, the inventor of the Baking Steel, Andris Lagsdin, wrote that steel stores more than 18 times the heat that stone can. Our own stone vs. steel breakdown uses 18x too, but as a conductivity figure — which, spoiler, is the version that holds up.

I wanted to see whether that holds up.

Stored heat is just weight times specific heat — how much energy a pound of material holds per degree. Engineering ToolBox lists steel at 0.12 BTU per pound per °F. A US patent on ceramic filter substrates (No. 7,574,796) puts cordierite, the stuff most pizza stones are made of, at about 750 J/kg·K, which works out to roughly 0.18.

So pound for pound, cordierite actually holds more heat than steel. Steel just packs more pounds into a thin slab. Plug in the real weights and sizes ATK published and you get this:

Look at the second row. A thick cordierite stone banks about 22% more heat per square foot than the ¼-inch steel most people picture when they hear “baking steel.” The 18x number doesn’t describe storage at all.

What it gets close to is conductivity — how fast heat moves through the material. Thermtest puts carbon steel at about 45 W/m·K, while that same patent lists cordierite at 1.3 to 1.8. That’s a 25x to 35x gap. Same ballpark as the famous number, just describing a different property.

What Actually Decides Your Crust

Split the question in two and the whole debate gets easier. A slab does two jobs: it banks heat during the preheat, and it delivers heat into the dough once the pizza lands.

Material decides delivery speed

Steel dumps its heat into the dough fast. ATK actually measured this: after an hour of preheating, every model read 500°F, but the steels’ surface temperatures dropped faster once dough went on. Their read was that the steels were giving heat away quicker, and that’s why their crusts rose higher and browned sooner.

Stone delivers more gently. That’s not a defect. Vindulge’s complaint about steel on the grill is that it heats fast and swings in temperature, and my read is that gentler delivery is simply more forgiving over a live fire.

Weight decides preheat time and recovery

More mass means more heat to bank, which takes longer to load and lasts longer between pizzas. ATK’s lightweight Outset tiles hit 500°F in 30 minutes, while everything else needed the full hour. At the other end, the 27-pound Baking Steel Pro and the inch-thick California Pizza Stones slab both bounced back faster between pies.

That’s also why a thin, light steel can feel underwhelming on pizza number three. It delivers fast but doesn’t have much in the bank. If you’re feeding a crowd, weight matters more than material.

The Best Pizza Stones and Steels for 2026

These picks come from published test results plus the heat math above. Where I cite performance, it’s the tester’s finding, not mine. Specs are as ATK and Food Network reported them, and prices move constantly, so treat any number as a snapshot.

Already shopping King Arthur? The King Arthur Bread and Pizza Stone is a rectangular cordierite stone rated to 1,400°F, so it’s grill-safe too, and it lists at $68.95. It carries a 4.8-star average across 173 reviews. I couldn’t find weight or thickness published, or an independent test, so I can’t place it in the heat table — but it’s the right shape and material.

Match the Slab to Your Pizza

Here’s the whole guide in one move: pick the delivery speed your pizza needs, then pick enough weight for the number of pies you bake.

• Thin crust, New York-style or Neapolitan-ish in a home oven: steel. You need fast delivery to set the bottom before the top dries out. Our New York-style pizza at home recipe was built for exactly this setup.
• Bread, calzones and thicker crusts: stone, or steel one rack lower. Gentler delivery stops the base from burning before the middle bakes through.
• A gas or pellet grill: cordierite, following Vindulge’s lead. Steel is fine for a charcoal kettle, where Vindulge worries about cracking a stone.
• Pan pizza, Detroit or Sicilian: you may not need a slab at all. See our roundup of pizza pans for home ovens.
• Serious about 700°F-plus Neapolitan: a slab tops out at your oven’s max. That’s where a dedicated oven earns its keep — our best pizza oven 2026 comparison picks up from here.

Size matters as much as material. King Arthur’s own guide recommends rectangular over round and as big as your oven fits, because a bigger target makes the launch forgiving. I’ll second that; a pie that lands half on, half off is how smoke detectors earn their keep.

How to Get the Most Out of It

A slab is only as good as its preheat. King Arthur recommends at least an hour with the oven at temperature, and looking for a surface reading of 500°F or better if you own an infrared thermometer. Convection mode speeds it up. For the step-by-step, see how to preheat your oven for pizza.

Between pies, give it at least five minutes to recover, per King Arthur. Skip that and every pizza comes out paler than the last. Some bakers run two slabs on two racks and alternate.

If a steel browns your bottom before the cheese melts, ATK’s fix is to switch to broil as soon as the pizza goes in. If that’s still lopsided, drop the steel a rack and set the oven to 450°F. That’s the classic cause behind a pizza that’s burnt on the bottom and pale on top.

Launching is its own skill. A floured peel and a confident flick beat hesitation every time — our pizza peel guide walks through it, and this one on sticking covers the rescue.

FAQ

Is a pizza steel worth it over a stone?

For thin, fast-baked pizza in a home oven, the test results say yes. ATK ranked every steel above every stone. If you mostly bake bread, thicker crusts or grill your pizza, a good cordierite stone costs less, weighs half as much and suits the job better.

How long should I preheat a pizza stone or steel?

Plan on an hour at 500°F; both ATK and King Arthur landed there. Food Network found its stones ready at around 30 minutes, and ATK’s lightweight tiles were ready in 30 too. Thicker and heavier slabs need the full hour.

Why did my pizza stone crack?

The usual culprits are moisture and impact. ATK notes that stones can crack if they’re heated while wet or dropped. Let a washed stone dry completely before it goes back in the oven.

Do I need a stone at all?

Not strictly. An upside-down sheet pan or a cast iron skillet gets you surprisingly far — we covered the options in making pizza without a stone. A slab just makes crisp bottoms repeatable.

Can I bake frozen pizza on a pizza stone?

Yes. To go easy on a cordierite stone, I’d avoid dropping a rock-hard pie straight onto a blazing slab, since sudden temperature swings are what stress ceramic. Our guide to cooking frozen pizza compares the stone method with the oven rack and air fryer.

The Bottom Line

The best pizza stone for most home ovens is a quarter-inch steel, and the Original Baking Steel is the safest single pick. But the reason isn’t that steel “stores 18 times more heat.” It doesn’t. It’s that steel hands its heat over fast, and fast is what a 500°F oven needs to fake a pizzeria floor.

If you bake bread, grill your pizza, or can’t lift 16 pounds comfortably, a thick cordierite stone is a smart, cheaper buy — and heavier is better. Either way, preheat for an hour and give it five minutes between pies. Honestly, that habit will do more for your crust than any brand name.