About KitchenMath
KitchenMath exists because cooking conversion online is broken. Type "1 cup of flour to grams" into a generic converter and you will get 240 grams, the weight of one cup of water. The actual answer is somewhere between 113 and 150 grams, depending on the type of flour and how it was measured. Those are different baked goods.
Every page on this site uses the actual density of the ingredient, sourced from a published primary reference and confirmed against at least one independent secondary reference. The conversion is correct for the ingredient, the variant, and the measurement system. The page also explains why the conversion is tricky for that specific ingredient, what the most common mistake is, and how to measure correctly.
The site is built for home cooks who care about accuracy, food bloggers and recipe writers who need a citation-friendly reference, and clinicians and researchers who need standardized cooking measurements for nutritional or therapeutic work.
What this site is not
- This is not a recipe site. We focus on conversions, not on what to make with the converted amounts.
- This is not a nutrition tracker. We do not compute calories or macros.
- This is not a calorie counter. The closest reference for that is USDA FoodData Central.
Corrections and feedback
If a density value on this site does not match a primary source, or if you have access to a more authoritative reference, the corrections inbox is the email link below. Include the ingredient, the value, and the source you are citing.
Methodology
The full sourcing and verification methodology is on the methodology page.