How Big Is a 14-Inch Pizza? Size, Slices & Comparisons

A round 14-inch pizza measures 14 inches across through its center—35.56 centimeters. Its radius is 7 inches, and its ideal circular area is about 153.94 square inches, usually rounded to 154.

For a named restaurant example, Pizza Hut's U.S. sizing guide describes its large pizza as 14 inches in diameter and cut into eight slices. Other restaurants and cutting styles can differ.

The diameter explains width. It does not by itself determine thickness, total weight, slice count, or how many people the pizza will feed.

Measure from one outside edge, through the center, to the opposite outside edge. The full line is the diameter; halfway along it is the center.

                 round pizza
             .----------------.
          .-'                  '-.
         /                        \
        |<----7 in----o----7 in---->|
         \                        /
          '-.                  .-'
             '----------------'
              14 inches across

Labeled schematic, not a scale drawing or an actual-size image.

If you are making a paper reference, draw a circle with a 7-inch radius. A 14-by-14-inch square encloses that circle, but the pizza does not occupy the square's corners.

Using the NIST inch definition, 14 × 2.54 gives 35.56 cm. Actual baked pizzas may not form perfect circles or match the nominal diameter exactly.

For two ideal circular pizzas, a 14-inch pizza has approximately 36.1% more area than a 12-inch pizza.

The difference between 12 and 14 inches is only two inches across, but the area grows with the square of the radius:

14² ÷ 12² = 1.3611…, or about 36.1% more area.

Likewise, a 14-inch pizza has 96% more area than a 10-inch pizza—almost twice as much. These are surface-area comparisons. They do not establish equal crust thickness, topping quantity, weight, or calories.

For cutting patterns and conditional portion examples at the smaller size, see the 12-inch pizza size guide.

Compared with one 14-inch pizza:

• A 16-inch pizza has approximately 30.6% more area.
• An 18-inch pizza has approximately 65.3% more area.
• Two 12-inch pizzas together have approximately 46.9% more area.

These ratios use ideal circles. They are useful when you want to compare the amount of surface rather than the number of slices.

If you also compare prices, divide each actual menu price by its calculated area. That gives a price per square inch for those particular options. Use comparable crusts and toppings, and include the charges that apply to your order; diameter alone does not determine value.

For another smaller-pizza comparison, two 11-inch pizzas have about 23.5% more combined circular area than one 14-inch pizza.

There is no mathematically fixed number of slices. The same round pizza can be divided into six, eight, ten, or more pieces.

Pizza Hut's official large-pizza example has eight slices, but check the restaurant's cut rather than assuming every 14-inch pizza follows that pattern.

If the pieces are equal triangular sectors, their ideal area is:

More cuts create smaller pieces, not more pizza. A square-cut or party-cut pizza can also have pieces of different shapes and sizes, so the equal-sector calculations would not describe each piece.

Start with the actual slice count and the portions you intend to serve. For an eight-slice pizza, these are simple arithmetic examples:

• Two people taking four slices each use all eight slices.
• Three people taking two slices each use six slices, leaving two.
• Four people taking two slices each use all eight slices.

These are ways to divide a pizza, not a prediction that the portions will satisfy everyone. Appetite, crust, toppings, other food, and whether you want leftovers affect the amount you choose.

Use slice counts cautiously when comparing different pizzas: two slices from a six-cut pizza are a larger fraction of that pizza than two slices from an eight-cut one.

Is a 14-inch pizza medium or large?

At Pizza Hut in the U.S., it is labeled large. Size names are restaurant-specific, so compare the stated diameter rather than the label alone.

Is 14 inches the radius?

No. For the round pizza described here, 14 inches is the diameter. The radius is half that distance: 7 inches.

What is the area of a 14-inch pizza?

For an ideal circle, π × 7² = 49π, or approximately 153.94 square inches. This is the full circle, including the outer crust area.

Is a 14-inch pizza twice as big as a 7-inch pizza?

Its diameter is twice as large, but its circular area is four times as large. Doubling a circle's diameter multiplies its area by four. See the 7-inch pizza size guide for smaller-pizza dimensions and slice examples.

Does a 14-inch box prove the pizza is 14 inches?

No. A box and its contents are different objects. To check the pizza's diameter, measure the pizza itself across the center.

• Pizza Hut U.S.: Pizza Sizes: the named 14-inch-large and eight-slice restaurant example.
• NIST Engineering Metrology Toolbox FAQ: exact inch-to-millimeter definition used for centimeters.
• Brigham Young University–Idaho: Area of a Circle: circle-area formula, A = πr².

Areas and comparisons are calculated for perfect circles with the stated diameters. Figures are rounded to the displayed precision. Portion examples are conditional divisions of a stated slice count, not dietary guidance or measured servings.