Flour Type Conversion Calculator
Convert between flour types: all-purpose, bread, 00, cake, and whole wheat.
Weight adjustment ratios for accurate baking.
Flour Type Conversion Guide
Different flour types have different protein contents, which affects water absorption, gluten development, and final texture. When substituting one flour for another, you need to adjust the amount to account for these differences. Simply swapping 1 cup for 1 cup often results in tough or crumbly baked goods.
Why Protein Content Matters
Protein (primarily glutenin and gliadin) forms gluten when mixed with water. More protein means more gluten, which means more structure and chewiness. Less protein means less gluten, which means a softer, more tender crumb.
Flour Types and Protein Content
| Flour Type | Protein % | Best For |
|---|---|---|
| Cake flour | 7–8% | Delicate cakes, biscuits, tender pastries |
| Pastry flour | 8–9% | Pie crusts, cookies, muffins |
| All-purpose (AP) | 10–12% | General baking, cookies, quick breads |
| 00 flour (Italian) | 11–12.5% | Pizza, fresh pasta, focaccia |
| Bread flour | 12–14% | Yeast breads, bagels, pizza dough |
| Whole wheat | 13–14% | Dense breads, muffins, pancakes |
| High-gluten flour | 14–15% | Chewy bagels, very crusty breads |
Conversion Ratios (by weight, relative to All-Purpose)
| Converting FROM | Converting TO | Multiply Weight By |
|---|---|---|
| All-purpose | Bread flour | 0.95 |
| All-purpose | 00 flour | 1.00 |
| All-purpose | Cake flour | 1.05 |
| All-purpose | Whole wheat | 0.90 |
| Bread flour | All-purpose | 1.05 |
| Bread flour | 00 flour | 1.05 |
| Cake flour | All-purpose | 0.95 |
| 00 flour | All-purpose | 1.00 |
| 00 flour | Bread flour | 0.95 |
| Whole wheat | All-purpose | 1.10 |
Why the Ratios Work
Higher-protein flours absorb more water. If you substitute a lower-protein flour, you use slightly more (by weight) to compensate for reduced absorption. If you substitute a higher-protein flour, you use slightly less to avoid a dry, tough result.
About 00 Flour
00 (doppio zero) refers to the grind fineness, not the protein content. Italian 00 flour is ground ultra-fine, producing a silky texture perfect for pizza and pasta. Its protein content (11–12.5%) is similar to all-purpose flour, but the fine grind creates different gluten behavior — more extensible, less elastic. This is why Neapolitan pizza dough stretches thin without snapping back.
For most baking, all-purpose flour is a reasonable 1:1 substitute for 00 flour by weight. The texture will be slightly different, but the results are still very good.
Worked Example
A recipe calls for 500g of bread flour. You only have all-purpose flour.
Adjusted weight = 500g × 1.05 = 525g of all-purpose flour
You may also want to add 1–2 teaspoons of vital wheat gluten per cup to boost the protein content closer to bread flour levels.
Volume vs. Weight
Always convert by weight, not volume. Different flour types have different densities — a cup of cake flour weighs about 114g, while a cup of bread flour weighs about 130g. Using volume measurements introduces 10–15% error before you even start adjusting for flour type.
| Flour Type | Weight per Cup |
|---|---|
| Cake flour | 114g (4.0 oz) |
| All-purpose | 125g (4.4 oz) |
| 00 flour | 125g (4.4 oz) |
| Bread flour | 130g (4.6 oz) |
| Whole wheat | 128g (4.5 oz) |