Gluten-Free Flour Conversions: Grams to Cups

Convert gluten-free flours from grams to cups: almond, coconut, rice, oat, tapioca and more, with notes on why each flour weighs differently per cup.

Gluten-free flours have very different densities from wheat flour, making accurate conversion essential.

Gluten-Free Flour Conversion Table

Flour — Grams per Cup — Compared to AP Flour

Almond Flour — 96g — 23% lighter

Coconut Flour — 128g — 2% heavier

Rice Flour — 158g — 26% heavier

Oat Flour — 92g — 26% lighter

Chickpea Flour — 92g — 26% lighter

Tapioca Flour — 113g — 10% lighter

Buckwheat Flour — 120g — 4% lighter

Sorghum Flour — 136g — 9% heavier

Potato Starch — 192g — 54% heavier

Cornstarch — 128g — 2% heavier

Why This Matters for GF Baking

You can't simply swap 1 cup of wheat flour for 1 cup of almond flour. The density difference means you'd get a completely different amount of actual flour. Always convert by weight:

If a recipe calls for 125g flour → use 125g of your GF flour

If a recipe calls for 1 cup AP flour → convert to 125g, then measure your GF flour to 125g

Common GF Flour Blends

Most GF baking uses a blend. A common ratio:

2 parts rice flour (316g)

⅔ part potato starch (128g)

⅓ part tapioca starch (40g)

This gives about 484g of blend, roughly equivalent to 3¾ cups.

Tips for GF Baking

Always weigh — GF flours vary more than wheat flour in density

Add xanthan gum — ½ tsp per cup of GF flour for structure

Rest the batter — 30 minutes helps GF flours absorb liquid

Expect different texture — GF baked goods are naturally denser