Short answer: start with how many flavors the table wants, then compare pizza area—not diameter alone. A 20-inch pizza has four times the surface area of a 10-inch pizza. Appetite and slice count vary, so use this guide as a size comparison rather than a serving promise.

Why pizza diameter can fool a group
A pizza is a circle, so its surface area depends on the square of its radius. That sounds academic, but it solves a common ordering problem. Moving from a 10-inch pizza to a 20-inch pizza does not merely double the amount of pizza. The 20-inch pie has four times the area.
The comparison is useful because people often look only at the difference in inches. A 14-inch pizza sounds only a little larger than a 10-inch pizza, yet it has almost twice the surface area. A 16-inch pizza has about two and a half times the area of a 10-inch pizza.
Rose's Roadhouse pizza sizes compared
The current Rose's Roadhouse menu lists 10-inch personal, 14-inch small, 16-inch medium and 20-inch large pizzas. A 25-inch giant pizza is also listed as an advance order. The figures below compare circular surface area. They do not estimate slices, portions or how hungry your table will be.
| Menu size | Approximate area | Compared with 10-inch |
|---|---|---|
| 10-inch personal | 79 square inches | 1.00× |
| 14-inch small | 154 square inches | 1.96× |
| 16-inch medium | 201 square inches | 2.56× |
| 20-inch large | 314 square inches | 4.00× |
| 25-inch giant | 491 square inches | 6.25× |
Choose one large pizza or several smaller ones?
Several pizzas make flavor decisions easier
Two or three pizzas can make sense when the group wants different toppings, when someone wants a meat-free option, or when friends are arriving at different times. Separate pizzas also make it easier to keep one choice simple while another part of the table orders something more loaded.
A larger pizza keeps the order simple
One larger pizza can work when the table agrees on a flavor and wants a straightforward shared order. The area comparison helps here: a larger diameter can represent substantially more pizza than it first appears. Check the current price beside the size you are considering rather than assuming that two diameters deliver the same value.
Mixing pizza with other food changes the decision
A table adding burgers, barbecue, sandwiches, salads or starters may need less pizza than a pizza-only table. Decide whether pizza is the whole meal or one part of a mixed order before choosing a diameter. The full Roadhouse menu makes that comparison easier.
A practical ordering sequence
- Count choices before people. Ask how many distinct topping preferences the group really has.
- Decide whether pizza is the main event. Include any burgers, barbecue, sides or salads the table expects to order.
- Compare area. Use the table above when two sizes seem close.
- Check the live menu. Confirm current sizes, flavors and prices on the restaurant menu rather than an old screenshot or travel post.
- Call for the giant pizza. Give at least one hour of notice and confirm the current price and availability.
If the table is still undecided, begin with the flavor question. People can compare diameters more calmly once they know whether they want one shared choice or multiple pizzas alongside the rest of the meal.
Common pizza-size questions
Is a 20-inch pizza twice as large as a 10-inch?
No. Measured by circular area, a 20-inch pizza is four times the size of a 10-inch pizza.
Is a 14-inch pizza much larger than a 10-inch?
Yes. A 14-inch pizza has about 1.96 times the surface area—almost double—even though the diameter is only four inches wider.
How many people does each size feed?
There is no responsible universal answer. Appetite, crust, toppings, sides and whether pizza is the entire meal all matter. This guide intentionally compares area without promising servings.
Where should I check current prices?
Use the Rose's Roadhouse pizza menu. Prices and availability can change, so the live menu and a direct call are more reliable than an older article.
Ready to plan the table?
Compare the current pizza choices, or call Rose's Roadhouse when you need help with an advance order.
See pizza sizes and prices