00 flour is an Italian flour type that is usually very refined and commonly sold for pizza and pasta. For a pizza maker, the important part is that 00 is not a fixed protein grade. If a recipe names a particular 00 flour, that product is the simplest way to follow the recipe. If it does not, bread flour or all-purpose flour can still be a sensible starting point when the recipe supports it.
Think of 00 as the start of the label, not the whole story. The exact bag, its stated protein, any W value, and the recipe in front of you matter more than the two zeros alone.
What 00 flour actually means
Italian flour types are part of a classification system for soft-wheat flour. In the Italian rule often cited for these labels, type 00 sits alongside type 0, 1, 2, and whole-wheat flour. The table gives type 00 a maximum ash figure of 0.55 and a minimum protein figure of 9.00, both on a dry-matter basis. It also contains an exception for flour intended for uses other than breadmaking. That makes it useful background, not a shortcut for judging every pizza bag sold anywhere. You can read the Italian source text for the formal detail.
In ordinary shopping language, 00 usually signals a highly refined flour. It is not automatically pizza flour, and it does not promise one protein percentage, one strength, or one dough result. The product name and the maker's description tell you what that particular flour is being sold for.
For a broader look at the labels on flour bags, see our pizza flour types guide.
00 vs bread flour vs all-purpose flour
These labels answer different questions, so there is no tidy one-word American equivalent for 00.
| Label | What it tells you | What can still vary | When it may make sense |
|---|---|---|---|
| 00 flour | An Italian type label commonly used for refined flour. | Protein, W, ingredients, and the maker's intended use. | When a recipe names a 00 flour or you want to use a product made for the style you are baking. |
| Bread flour | A broad market label for flour sold for yeast doughs and bread. | Protein level, wheat blend, treatment, and how a particular recipe handles it. | When the recipe calls for bread flour, or when it is the flour you know works in your usual pizza dough. |
| All-purpose flour | A broad general-use flour category. | Protein level and how it performs in any given pizza recipe. | When the recipe allows it or you are making a familiar recipe with pantry flour. |
The labels are useful clues, not performance scores. A 00 flour and a bread flour may have similar published protein figures, while two 00 flours may have quite different figures. The number on the exact bag is more useful than assuming all flours in a named category are interchangeable.
Do you need 00 flour for pizza?
You do not need 00 flour to make pizza. Use the exact 00 flour when a trusted recipe specifies it and you want to follow that recipe's assumptions as closely as possible. If a recipe gives you a choice, start with the flour it names. A pantry flour can still be a practical option when the recipe supports it, especially if you already know how that flour behaves in your dough.
Avoid a blind swap followed by a string of precise tweaks. A different flour can change the dough, but this guide does not have a tested conversion for every 00, bread, or all-purpose flour. Start with a recipe that accommodates the flour you have, then look at the maker's own product guidance.
King Arthur describes its Type '00' flour as a pizza flour for Neapolitan-style dough, while its range also includes flours sold for bread and general baking. That is the maker's guidance for its own product, not a rule that every 00 bag belongs in one kind of pizza.
Four 00 flours, four different published spec sheets
The clearest reason not to treat 00 as a fixed protein grade is that real products differ. Here are published manufacturer figures for four 00 products in our collection.
| Product | Published protein | Other published detail | Product source |
|---|---|---|---|
| King Arthur Professional Type '00' | 11.0% | Ash 0.54% | King Arthur Type '00' |
| Central Milling Organic Type 00 Normal | 11.5% | W 280-300 | Central Milling product page |
| Caputo 00 Pizzeria | 12.5% | W 260-280 | Caputo product page |
| Central Milling Organic Type 00 Reinforced | 13.8% | W 340-360 | Central Milling product page |
These are published specs, not a ranking. They show something useful: the same 00 label can sit on products with different declared protein and W values. The figures appear as their manufacturers publish them, and not every source gives the same testing detail.
You can see more examples in the pizza flour registry. It is the place to check the exact product rather than relying on a category name.
What to check before you buy or substitute
When a pizza recipe mentions 00 flour, start here:
- Read the exact flour name. "00" may be only one part of the label. Names such as Pizzeria, Bread, Pasta Fresca, or Reinforced offer useful context from the manufacturer.
- Look for a published protein figure. It is a helpful first filter, not a full prediction of dough behavior. Our pizza flour protein guide explains why two flours with the same percentage can still differ.
- Check the maker's intended use. A product page or package may identify pizza, bread, pasta, or another use. Treat that as the maker's guidance for its own flour.
- Look for W when it is supplied. W is an alveograph measurement related to dough strength. It is separate from protein, so it can add context when you are comparing two otherwise similar bags. Our W value guide explains the number without turning it into a score.
- Let the recipe lead. If a recipe was developed around a named flour, matching it removes one variable. If not, choose the flour you have and use a recipe that names that category.
The practical takeaway
00 flour is useful to understand because it is a common pizza label, not because it is a magic ingredient. It tells you something about the flour's Italian type, but it cannot replace the rest of the bag.
For a recipe built around a particular 00 flour, use that product if you can. For everyday pizza, choose a recipe that fits the flour you have, then check the exact product's published protein and use guidance before assuming one 00 bag works like another. That is a better habit than buying by the two zeros alone.