Cups to grams, and back
Every figure names the source it came from.
The industry standard for ingredient weights has a systematic error. It publishes 227 g per cup for hydrated dairy products that must physically be denser than water — the figure that 8 weight ounces gives (8 × 28.35 g = 226.8 g), applied to a fluid-ounce volume and carried across the industry for decades. This site documents 59 such rejections with the physics behind each one, and publishes the accepted USDA figures instead. See the corrections →
From the notes
Yuka alternatives: 6 grocery scanner apps compared Yuka vs Open Food Facts, Fooducate, EWG, Fig and SwapGenie: how each grocery scanner app scores a barcode, what allergy alerts cost, and what they all miss.Browse by category
Seven categories, each held to a tolerance appropriate to how the ingredients in it actually behave. A cup of oil is not a cup of flour.
- Fats and oils25 ingredients →
- Sugars and salts27 ingredients →
- Milled powders and grains154 ingredients →
- Shredded, grated and crumbled cheeses14 ingredients →
- Spices and dried aromatics21 ingredients →
- Liquids65 ingredients →
- Syrups25 ingredients →
Featured ingredients
A cross-section of what this site does — a range-published flour, a rejected dairy figure, a two-brand salt entry, and the baseline staples.
- All-purpose flour3 methods, not reconciled 120–141.7 g4.2–5 oz
- Buttermilk1 cup 245 g8.6 oz
- Kosher salt2 methods, not reconciled 128–256 g4.5–9 oz
- Butter1 cup 227 g8 oz
- Olive oil1 cup 216 g7.6 oz
- Honey1 cup 339 g12 oz
- Powdered sugarunsifted, spooned into the cup 120 g4.2 oz
- Cocoa powder1 cup 86 g3 oz
SwapGenie
Scan a grocery barcode, get a better version of the same thing.
We built SwapGenie for the problem this site cannot solve: the label. It reads a barcode, scores the product against your own allergens and diet rather than a generic grade, and suggests what to buy instead. On Android now; iOS on February 15, 2027.
Coming February 15, 2027
Made by MarVikIT. ExactCups is made by MarVikIT, an independent software studio. MarVikIT also makes SwapGenie and Big Bands. See all projects at marvikit.com