KettlePizza is a stainless steel insert that clamps onto a Weber-style charcoal kettle grill (or, in the Gas Pro line, a 3-burner-plus gas grill) and turns it into an enclosed pizza oven. The insert raises the grill's dome height and adds a permanently open oven mouth, so heat convects continuously over the pizza instead of escaping every time you lift a lid to check it.

How much does a KettlePizza kit cost?

Pricing spans four tiers per current retailer listings: the Basic kit (KPB-22, insert only, no stone or peel) runs about $144; the Deluxe USA (KPDU-22, insert plus a 15-inch cordierite stone and aluminum peel) runs about $249.95; the Pro kit (KPPK-22, adds a pro-grate and tombstone-shaped stone, 22.5-inch kettles only) runs about $379; and the Gas Pro Deluxe (KPDU-GP, for 3-burner-plus gas grills, includes stone, peel, thermometer, and gloves) runs roughly $290-$460 depending on retailer.

What size kettle grill does KettlePizza fit?

The core Basic and Deluxe USA kits fit both 18.5-inch and 22.5-inch Weber-style charcoal kettles. The Pro kit is built specifically for 22.5-inch kettles only. A separate Gas Pro Deluxe kit exists for gas grills with at least three burners and a minimum 24x17-inch cooking area — check your exact grill's grate footprint against that minimum before ordering.

How hot does a KettlePizza get, and how fast does it cook a pizza?

Owners routinely report chamber temperatures past 750°F on a well-lit charcoal kettle with hardwood added, and KettlePizza's own marketing cites bakes finishing in under 8 minutes once the stone is fully heat-saturated. Getting there takes real preheat time — 30-45 minutes with the lid closed is typical before the first pie goes in, the same range other kettle-conversion and grill-insert kits need.

KettlePizza vs Onlyfire vs BakerStone: which grill pizza kit should I buy?

They split by grill type and budget. If you run a charcoal Weber kettle, KettlePizza's Deluxe USA (~$250) is the American-made original with the thicker stainless build; Onlyfire's kettle kit does the same basic job for roughly $100 less with thinner steel. If you run a gas grill instead, BakerStone's Original Box (from $139.99) is the cheaper, grill-agnostic route since KettlePizza's own gas kit costs meaningfully more. Buy KettlePizza's charcoal kits specifically if you already own a Weber kettle and want the highest-rated, most tested kit in that format — it's the one America's Test Kitchen picked as a top pizza-on-the-grill option.

KettlePizza Review 2026: Turn a Weber Kettle (or Gas Grill) Into a Pizza Oven

Quick Answer: KettlePizza is a stainless steel insert that converts a Weber-style charcoal kettle grill (or a large gas grill, via a separate kit) into an enclosed pizza oven. The core Deluxe USA kit ($249.95, includes a 15” cordierite stone and aluminum peel) is the one most kettle owners should buy; a stripped-down Basic kit runs $144 with no stone or peel, and the flagship Pro kit runs $379 with a specialized pro-grate. Owners routinely report chamber temperatures past 750°F with charcoal and hardwood, and KettlePizza cites bake times under 8 minutes once the stone is fully saturated.

KettlePizza comes up constantly across our grill-combo and grill-stone coverage as the go-to Weber kettle conversion kit, but it never had its own dedicated review here. We pulled current pricing across the full lineup direct from retailer listings to break down which kit actually fits which grill.

KettlePizza by the numbers

$144-$379: the full price range across the charcoal-kettle lineup, from the bare Basic insert to the accessory-loaded Pro kit, per current retailer listings.
750°F+: the chamber temperature KettlePizza owners commonly report on a saturated charcoal kettle, well above the ~550°F ceiling of a home kitchen oven per the U.S. Department of Energy’s range for residential ovens.
Under 8 minutes: the bake time KettlePizza cites for its Deluxe kit once the chamber and stone are fully heat-saturated.
15”: the cordierite stone diameter included in the Deluxe USA and Gas Pro Deluxe kits.
2 kettle sizes: the Basic and Deluxe USA inserts both fit 18.5” and 22.5” Weber-style kettles; only the Pro kit is limited to 22.5” only.

The lineup, tier by tier

Kit	Fits	Includes	Price
Basic (KPB-22)	18.5" / 22.5" charcoal kettle	Insert only — no stone or peel	~$144
Deluxe USA (KPDU-22)	18.5" / 22.5" charcoal kettle	Insert + 15" cordierite stone + aluminum peel	~$249.95
Pro (KPPK-22)	22.5" charcoal kettle only	Insert + pro-grate + tombstone stone + aluminum peel	~$379
Gas Pro Deluxe (KPDU-GP)	3-burner+ gas grill, 24"x17"+ grate	Insert + 15" stone + peel + thermometer + gloves	~$290-$460

What you actually get

KettlePizza Deluxe USA Kit (18.5" & 22.5" charcoal kettles)

Best all-around pick · ~$249.95 direct/retailer

Stainless insert raises the kettle's dome and creates a permanently open oven mouth, so heat convects continuously over the pizza instead of dumping every time you lift a lid.
Includes a 15" cordierite cooking stone and an aluminum peel — no separate accessory purchase needed to start baking.
Made in the USA; fits both common 18.5" and 22.5" Weber-style kettle sizes, unlike the Pro kit above it.

Shop KettlePizza kits on Amazon →

Budget real preheat time before the first pie: 30-45 minutes with the lid closed and a full charcoal load is typical to get the stone heat-saturated, the same range any kettle-conversion or grill-insert kit needs before it performs. Try Amazon Fresh to get fresh mozzarella, San Marzano tomatoes, and dough delivered same-day so everything’s ready by the time the kettle hits temperature.

The Pro kit’s tombstone-shaped stone and pro-grate are aimed at people who cook multiple pizzas back to back for a crowd — the shape gives more usable stone real estate than the round Deluxe stone, and America’s Test Kitchen named the Pro configuration a top pick in its own testing. For most single-family backyard use, though, the round Deluxe stone is plenty and saves $130 over the Pro kit.

How it compares to other grill conversions

Option	Format	Fits	Price
KettlePizza Deluxe USA	Kettle insert	Charcoal Weber kettle	~$249.95
Onlyfire kettle kit	Kettle insert	Charcoal Weber kettle	~$150
BakerStone Original	Gas-grill insert	Most 3-burner+ gas grills	$139.99-$159.99
Napoleon Pizza Add-on	Gas-grill enclosure	Napoleon gas grills	$149.99
Ninja Woodfire	Standalone, dedicated	Any backyard	~$349-$399

The honest read: KettlePizza is the most established, most independently-tested name in kettle conversions, but it isn’t the cheapest — Onlyfire does the same basic job on a charcoal kettle for roughly $100 less with a thinner stainless build. And if your grill runs gas rather than charcoal, KettlePizza’s own Gas Pro Deluxe kit costs noticeably more than BakerStone or Napoleon’s gas-grill inserts for a similar result, so kettle owners are KettlePizza’s strongest fit.

Who should actually buy this

Buy the Deluxe USA kit if you own a Weber-style charcoal kettle and want the best-tested, American-made conversion — it’s the sweet spot of the lineup for most households.
Step up to the Pro kit only if you regularly cook for a crowd; the tombstone stone’s extra surface area is the main reason to pay the $130 premium.
Skip the Basic kit unless you already own a spare pizza stone and peel — at $144 it’s not much cheaper than the Deluxe once you’d have to buy those separately anyway.
Choose BakerStone or Napoleon instead if your grill runs gas — KettlePizza’s Gas Pro Deluxe kit costs more than either for a comparable enclosed-box result. See our best pizza oven grill combo guide for the full breakdown by fuel type.

The bottom line

For a charcoal Weber kettle owner who wants real 750°F+ pizza heat without buying a dedicated oven, the KettlePizza Deluxe USA kit at ~$249.95 is the proven, well-tested choice — it’s the kit most of our own grill-combo and grill-stone coverage keeps coming back to. Gas-grill owners are better served by BakerStone or a dedicated portable oven instead.

Pricing and specifications cited from current retailer listings across the KettlePizza lineup, current as of August 2026.