A calmer way to convert.

Pounds to Cups is a kitchen reference tool built around a simple idea: conversions are more useful when they respect the ingredient being measured.

Our estimates use a grams-per-US-cup density for each ingredient. That makes the result easy to understand while leaving room for the real-world variables that matter in a kitchen.

How the numbers are made

Every calculator, chart and guide on the site reads from one table of 28 ingredient densities, so the same question always gets the same answer. Volume conversions such as cups to quarts use the exact US customary definitions (1 cup = 236.6 ml), and weight conversions use the international pound of 453.59 g. Where an ingredient is measured packed, sifted or chopped, the guide for that ingredient says which method the number assumes.

Where the densities come from

Each grams-per-cup value is a typical figure for the ingredient measured the way American recipes expect: flour and powdered sugar spooned and leveled, brown sugar firmly packed, nuts whole, and liquids read at eye level. The values are rounded to the nearest gram and line up with commonly published baking weight charts. Real kitchens vary by a few percent with brand, humidity and technique, which is why every page shows the density it used.

What the site covers

PoundsToCups has 28 ingredients in its density table and 59 conversion guides covering volume (cups, spoons, pints, quarts and gallons), weight (grams, ounces, pounds and kilograms) and the weight-to-volume questions that depend on the ingredient. Six calculators and a recipe scaler use the same data.

Corrections are welcome

If you weigh a cup of something and get a consistently different number, tell us through the contact page. Include the brand and how you filled the cup, and we will review the value for everyone.