Gluten-Free Flour Blend Calculator

Run out of shop-bought gluten-free flour mid-recipe? You can mix a balanced all-purpose blend from rice flour and a couple of starches. Put in how much your recipe needs and this gives you the grams of each, plus how much xanthan gum to add. It all runs in your browser; nothing is sent or stored.

A cup of gluten-free flour is taken as ~140 g. This blend is for general baking; delicate cakes need less xanthan, yeast breads a little more.

To make 300 g of all-purpose blend

White rice flour 35%
Brown rice flour 25%
Potato starch 25%
Tapioca starch 15%
Xanthan gum

Whisk the flours and starches together well before use, and store airtight. If your recipe already lists xanthan gum, skip it here. Always check that every ingredient is certified gluten-free — cross-contamination is the usual culprit.

Two reminders: this is only gluten-free if every ingredient is certified gluten-free, since rice flour and starches are often milled on shared lines. And xanthan gum is what replaces gluten’s stretch — use a little less for tender cakes and a little more for yeast breads.

Want something to bake? Browse the recipes & food posts.