King Arthur Gluten Free Measure for Measure Flour is GFCO certified gluten-free at the strict <10 ppm threshold.
Yes. King Arthur Gluten Free Measure for Measure Flour is one of the most rigorously certified gluten-free flours on the US market — GFCO certified at <10 ppm (stricter than FDA’s <20 ppm), produced in a dedicated GFCO-certified gluten-free facility, Non-GMO Project Verified, and Kosher certified. Ingredients are rice flour, whole grain brown rice flour, whole sorghum flour, tapioca starch, potato starch, cellulose, xanthan gum, and vitamin/mineral fortification.
King Arthur Gluten Free Measure for Measure Flour is the gold standard in mainstream gluten-free flour — GFCO certified, dedicated production facility, <10 ppm gluten threshold (half the FDA standard for “gluten-free” labeling). For celiac bakers, this is one of the safer flours on the shelf. The only caveat is making sure you grab the right King Arthur bag at the store — King Arthur also sells regular wheat-based flour under the same brand.
What Makes It Certified Gluten-Free
Per King Arthur’s official product page, King Arthur Gluten Free Measure for Measure Flour carries multiple certifications:
- GFCO Certified Gluten-Free — <10 ppm threshold (half the FDA’s <20 ppm). GFCO is the most stringent third-party gluten-free certification in the US.
- Produced in a dedicated GFCO-certified gluten-free facility — no shared equipment with wheat-containing products
- Non-GMO Project Verified
- Kosher Certified
What’s in the Bag
The blend is designed as a 1:1 substitute for wheat flour in non-yeasted recipes — muffins, cookies, cakes, brownies, pancakes, quick breads. For yeasted bread baking, King Arthur sells a separate Gluten Free Bread Flour.
Cross-Contamination Risk
Manufacturing
Very Low
- Produced in a dedicated GFCO-certified gluten-free facility.
- Maintained at <10 ppm threshold — half the FDA standard.
- Among the most rigorously certified GF flours on the US market.
Retail
Low
- Sealed bag with prominent “Gluten Free” and GFCO certification marks.
- Stocked in the gluten-free section, separate from King Arthur’s regular wheat flour.
Home Kitchen
Low–Medium
- Flour itself is gluten-free and safe.
- Risk is in shared kitchens where regular wheat flour is also used — flour dust can settle on shared surfaces, mixing bowls, and baking sheets.
- For mixed-baking households, use dedicated GF mixing bowls, measuring cups, and baking sheets.
Don’t Mix It Up — King Arthur Sells Wheat Flour Too
King Arthur Gluten-Free Product Line
- Gluten Free Measure for Measure Flour — 1:1 substitute for wheat flour in non-yeasted recipes; GFCO certified
- Gluten Free Bread Flour — formulated for yeasted bread baking; GFCO certified
- Gluten Free All-Purpose Flour — original King Arthur GF flour; GFCO certified
- Gluten Free Pancake Mix — GFCO certified
- Gluten Free Cookie, Brownie, Cake Mixes — GFCO certified
- Gluten Free Pizza Crust Mix — GFCO certified
Frequently Asked Questions
Is King Arthur Gluten Free Flour actually gluten-free?
Yes. King Arthur Gluten Free Measure for Measure Flour is certified gluten-free by GFCO at the strict <10 ppm threshold (half the FDA standard). It is produced in a dedicated GFCO-certified gluten-free facility, Non-GMO Project Verified, and Kosher certified. The ingredient list is naturally gluten-free flours (rice, brown rice, sorghum) plus starches (tapioca, potato), xanthan gum, and vitamin/mineral fortification.
Is King Arthur Gluten Free Flour safe for celiacs?
Yes. The GFCO <10 ppm certification is the strictest mainstream third-party gluten-free standard in the US. King Arthur is widely recommended by celiac advocacy organizations as a reliable gluten-free flour. For severely sensitive celiacs, GFCO-certified flours from dedicated facilities are the gold-standard tier.
Can I use King Arthur Gluten Free Flour 1:1 for wheat flour?
Yes for non-yeasted recipes — muffins, cookies, cakes, brownies, pancakes, quick breads. King Arthur Gluten Free Measure for Measure is specifically designed as a 1:1 substitute. For yeasted bread baking, use King Arthur Gluten Free Bread Flour (different formulation optimized for yeast).
Is King Arthur Gluten Free Bread Flour also gluten-free?
Yes. King Arthur Gluten Free Bread Flour is also GFCO certified and produced in the same dedicated gluten-free facility as Measure for Measure. The bread flour formulation is optimized for yeasted bread recipes — different ratio of flours and starches than Measure for Measure.
Does King Arthur make wheat flour too?
Yes. King Arthur is one of the largest US flour brands and sells extensive wheat-based flour product lines (Bread Flour, All-Purpose Flour, Whole Wheat, etc.) alongside their gluten-free line. The wheat flour is made in different facilities from the gluten-free flour. Always check the bag — the gluten-free product has prominent “Gluten Free” and GFCO certification marks on the front.
Can I bake King Arthur GF flour in a shared kitchen?
The flour itself is gluten-free, but baking in a kitchen that also uses regular wheat flour introduces cross-contact risks from flour dust settling on shared surfaces, mixing bowls, measuring cups, and baking sheets. For households with both GF and regular bakers, dedicated mixing bowls, measuring cups, and baking sheets are recommended. Wipe down surfaces thoroughly before GF baking sessions.