Baking
Pastry Flour Conversion
Pastry Flour weighs 113g per US cup.
| Amount | Grams | Ounces |
|---|---|---|
| 1 cup | 113.0 g | 3.99 oz |
| 1/2 cup | 56.5 g | 1.99 oz |
| 1/4 cup | 28.3 g | 1.00 oz |
| 1 tbsp | 7.1 g | 0.25 oz |
| 1 tsp | 2.4 g | 0.08 oz |
| 100 g | 100.0 g | 3.53 oz |
Need a different amount? Use the full Ingredient Converter tool.
Pastry flour weighs 113 grams per cup — essentially matching whole wheat flour's cup weight by coincidence, though the two flours are structurally unrelated; pastry flour is a soft, low-protein white flour milled specifically for tenderness, sitting in protein content between cake flour and all-purpose flour (roughly 8-9%).
That middle-ground protein content is exactly its purpose: pastry flour develops enough structure to hold together a pie crust or biscuit without becoming tough, but not so much that it fights the flaky, tender texture those bakes are supposed to have — a job all-purpose flour can do but with noticeably more toughness, and cake flour can't do at all since it's too delicate to hold a laminated or cut structure.
Pastry flour is genuinely less common on US grocery shelves than all-purpose or cake flour, which is why many home bakers approximate it by blending equal parts all-purpose and cake flour — a workable substitute that gets close to pastry flour's intermediate protein level without needing to special-order it.
Pastry flour's 108g-per-cup weight sits between cake flour's 114g and all-purpose's 120g in terms of the spectrum it occupies, with a protein content also landing in between — it's the flour of choice for pie crusts and biscuits specifically because that moderate protein level builds enough structure to hold a crust together without toughening it the way all-purpose's higher protein content can.
Pastry flour is genuinely harder to find in a typical US supermarket than all-purpose, cake, or bread flour, which is part of why many home bakers substitute a blend of all-purpose and cake flour instead of seeking it out specifically — a reasonable approximation, though not an exact protein-content match.
Its moderate protein level is also why it's the standard flour for a pâte brisée or American-style pie dough in more precise French and pastry-school recipes.
Frequently asked questions
What's the difference between pastry flour and cake flour?
Pastry flour has a slightly higher protein content than cake flour, giving it enough structure for pie crusts and biscuits, while cake flour is milled even softer and finer specifically for delicate cake crumbs that don't need to hold a cut or laminated shape.
Can I make a pastry flour substitute at home?
Yes — blending equal parts all-purpose flour and cake flour approximates pastry flour's intermediate protein content closely enough for most pie crust and biscuit recipes.
Why does pastry flour matter more for pie crust than bread?
Pie crust needs just enough gluten to hold together without becoming tough or chewy, and pastry flour's moderate protein content hits that balance — bread needs the opposite, strong gluten development, which is why bread flour and pastry flour serve nearly opposite purposes.
Is whole wheat pastry flour a real product, or just a marketing term?
It's a genuine, distinct product — whole wheat flour milled from soft wheat rather than the harder red wheat used for standard whole wheat flour, giving it a lower protein content closer to white pastry flour's while still retaining the bran and germ.
Does pastry flour need any different handling than all-purpose flour during mixing?
The main technique that matters more with pastry flour is minimizing overmixing — its lower protein content means it develops tough gluten faster relative to how little structure it actually needs, so a light hand with the dough matters even more than with all-purpose flour.