About CrumbCalc

CrumbCalc is a collection of free baking calculators built around one idea: baking conversions should be instant, accurate, and require nothing from you — no account, no app, no uploaded data.

Our numbers come from published, verifiable sources. Ingredient weights follow the King Arthur Baking ingredient chart cross-checked against USDA FoodData Central. Pan capacities follow standard manufacturer and test-kitchen measurements. Oven conversions use the international gas mark and fan-oven conventions. When sources disagree, we document the choice in the tool itself.

Every calculation runs locally in your browser. That's why the tools respond instantly, keep working offline after the page loads, and never see what you type.

Found an error, or want a calculator we haven't built yet? Tell us — data corrections ship within days, and reader requests drive the roadmap.