Unexpectedly Intriguing!
26 April 2019

It's Friday and, if we're being honest, it has been a really long week. So much so that probably the last thing you want to have to even think about right now is making dinner. Wouldn't it be a lot easier if you just ordered in some pizza instead?

Well, that's one problem solved, but now you have another. How much pizza should you order?

If you're like a lot of people, you also don't want to spend a lot of money on dinner, so you'll decide how much pizza to get by choosing from the options you have available among the latest coupons from your preferred pizza provider. Kind of like the following example from Pizza Hut (warning: this particular coupon has expired!)

After considering all these potential options, let's say for the sake of argument that you've narrowed in on the options at the top of the middle two columns, which you reckon will satisfy your pizza consumption plans: 2 medium one-topping pizzas for \$21.49 or 1 large one-topping pizza for \$13.99. Being the kind of person who wants to maximize the value you get for pizza dollar, which coupon should you use when placing your order?

That answer hinges on how much pizza there is in a medium versus a large pizza. Keeping with Pizza Hut's menu options, a medium pizza is 12-inches in diameter, while a large is 14-inches in diameter.

After becoming mentally exhausted after such a long week of work, you might conclude that with 2 medium pizzas, you will effectively have 24-inches of pizza diameter, which is 10 more than the 14-inch diameter large pizza, For just \$7.50 more, the 2 medium pizza coupon might seem like its a better deal.

That would be true, if and only if that really gave you the equivalent of a 24-inch diameter pizza. In reality, you have two 12-inch diameter pizzas, which are much, much smaller than that. If you want to get the most pizza you can for the least dollars, you're going to need to do some math in choosing between these coupons.

We know it's Friday, and that math is the last thing you want to do right now, so we built a tool to do that bit of personal finance math for you! Just enter the coupon options and pizza size information in the following tool, and we'll take care of the rest. If you're accessing this article on a site that republishes our RSS news feed, please click through to our site to access a working version of the tool.

Pizza Coupon Input Data
Input Data Coupon Option #1 Coupon Option #2
Number of Pizzas
Pizza Size (Diameter)
Price With Coupon

Which Pizza Coupon Is the Better Deal?
Calculated Results Unit Cost
Pizza Coupon Option #1
Pizza Coupon Option #2
The Bottom Line

Using the default values, Coupon Option #2, the single large, one-topping pizza, will give you the best value for your pizza dollar. Meanwhile, if you play with the numbers and plug in the prices that apply for 3-topping pizzas, you'll find the outcome changes.

And because we don't want to think about it any more, we'll leave you with the following video, featuring consumers impressed by a large, 14-inch diameter pizza:

It's funny what you find at the intersection of hunger, geometry, and pizza coupons! Speaking of which, there has been a rather noisy debate about the math involved in settling a different aspect of this question elsewhere on the Interwebs, which directly inspired us to create this tool to tackle the problem from a personal finance angle!

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Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:

ironman at politicalcalculations.com

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