What size pizza can the Ooni Karu 2 Pro cook?
The maximum pizza size is 16 inches.
Product review
The Karu 2 Pro is my enthusiast’s choice in Ooni’s multi-fuel range. Its taller chamber and broader cooking ability mattered more than its nominal 16-inch capacity, which I found possible but cramped with a wide peel.
Affiliate disclosure: Pizza Preacher may earn a commission if you buy through an eligible link, at no extra cost to you. Commercial relationships do not influence the editorial conclusion.
The short verdict
The Karu 2 Pro is my enthusiast’s choice in Ooni’s multi-fuel range. Its taller chamber and broader cooking ability mattered more than its nominal 16-inch capacity, which I found possible but cramped with a wide peel.
How I tested it
I cooked ten pizzas consecutively in the Karu 2 Pro and used charcoal, hardwood and gas. I also used the taller chamber for cast-iron cooking and steaks.
My first oven arrived dented and was replaced within days. During ownership I also encountered flame or ignition concerns and occasional difficulty reaching full temperature.
Cooking space
The 17 inches cooking area could take a 16-inch pizza, but clearance became tight with a wide peel and left little room to launch or rotate away from the flame.
Fourteen- and 15-inch pizzas were considerably easier. I would not buy the Pro simply because it technically accepts 16 inches.
For a gas-only Pro model with an 18-inch maximum pizza size, see the Ooni Koda 2 Pro review.
Beyond pizza
The extra internal height let me use cast-iron pans, cook steaks and prepare food that would have been awkward in a smaller Karu.
That broader cooking ability, the replaceable cooking floor and the choice of fuel mattered more to me than the maximum pizza diameter.
Ten-pizza session
I achieved excellent Neapolitan-style results with a stable charcoal bed and fresh hardwood to strengthen the flame. Across ten pizzas, that setup required more intervention between launches.
Gas recovered more predictably and let me concentrate on stretching, topping and serving. The oven heated faster than a heavier refractory design, but it also lost heat sooner and needed closer attention during a long session.
Build and support
My first oven arrived dented and Ooni replaced it within days. I also encountered flame or ignition concerns and occasional difficulty reaching full temperature.
Ooni responded quickly, but the oven felt less substantially built than the preceding Karu 16. Support quality and product build are separate parts of the buying decision.
Who should buy it?
I paid the £699 UK list price. I would choose the Karu 2 Pro for larger pizzas, cast-iron cooking and the option to manage a live fire when I had the time and inclination.
I would skip it if I mainly wanted routine pizza service. Gas was easier and more consistent for that job, and the optional burner costs extra. The Pro earns its price through broader cooking.
Complete record
Full specifications and measurements.
Pizza Preacher verdict
The Karu 2 Pro is my enthusiast’s choice for live-fire pizza and broader cooking. It earns much of its £699 price through versatility, but cramped 16-inch handling and my build concerns limit the score.
Buy it for live fire, larger pizzas and cast-iron cooking. Skip it if routine gas pizza service is the main job.
The overall score is the mean of the five decision factors above. Score basis: First-hand ten-pizza testing with wood, charcoal and gas plus broader cooking and replacement experience, scored against a £699 UK list price checked on 5 September 2026. This is my editorial judgement, not a customer-rating average. First-hand ownership and test notes recorded on 4 September 2026. Calendar test dates and supporting media are still to be added.
Quick answers
The maximum pizza size is 16 inches.
The maximum temperature is 500°C.
The unboxed weight is 26.75kg.
No. The Ooni Karu 2 Pro is for outdoor use only.
Ooni lists a registered warranty of 5 years.