Density-accurate. USDA-sourced. Always free.
The kitchen reference that gets the numbers right
PantryMetric converts any ingredient with density-accurate measurements, finds real substitutes with ratios, and tells you how to store it and how long it lasts.
Or jump straight to substitutes or storage & shelf life.
Browse by category
Baking
Flours, sugars, leaveners, chocolate, and the density-sensitive ingredients where a wrong cup-to-gram swap ruins a bake, sourced from King Arthur Baking.
Dairy & Eggs
Butter, milk, cream, cheese, yogurt, and eggs — density-accurate conversions, real substitutes, and USDA-sourced shelf life for each and every one.
Produce
Fruits and vegetables — chopped, sliced, grated, and whole-item weight conversions, plus USDA-sourced pantry, fridge, and freezer storage windows.
Meat & Seafood
Raw and cooked meat, poultry, and seafood — safe handling, USDA storage windows, and safe minimum cooking temperatures with correct rest times.
Pantry Staples
Rice, pasta, oils, sweeteners, and other shelf-stable staples — density-accurate conversions and exactly how long they actually last in storage.
Herbs & Spices
Dried and fresh herbs and ground spices — small-quantity conversions and real, ratio-backed substitutions for whenever you're out mid-recipe.
Featured tools
Why PantryMetric
Most kitchen conversion charts treat every ingredient the same — one generic "1 cup = X grams" number applied across flour, sugar, cocoa, and rice, as if they were all the same substance. They aren't. A cup of all-purpose flour, spooned and leveled, weighs about 120 grams. A cup of granulated sugar weighs about 200 grams. A cup of unsweetened cocoa powder weighs about 84 grams. Using one number for all three doesn't just introduce a small rounding error — in baking, where ratios of flour to fat to sugar determine whether a cake rises correctly, it can be the actual difference between a recipe working and a recipe failing.
PantryMetric's conversion tools are built on a per-ingredient density table sourced from King Arthur Baking's published ingredient weight chart and USDA FoodData Central — never a single averaged factor applied to every ingredient. See the Methodology page for the exact sources behind every figure on the site, and why an ingredient without a reliable, sourced density value is left out of the converter entirely rather than assigned a guessed number.
Storage and shelf-life guidance works the same way: every pantry, fridge, and freezer duration on this site traces back to USDA FoodKeeper data or USDA FSIS food-safety fact sheets, dated and reviewed on an annual refresh cadence — not a generic "a few days" guess. Safe minimum cooking temperatures come directly from USDA published guidance, with the correct rest time included, because getting that number wrong is a genuine food-safety question, not just a matter of taste.
By the numbers
177
density-sourced ingredients
12
interactive tools
188
USDA-sourced storage entries
29
real substitution guides
The full ingredient set spans 314 common ingredients across baking, dairy & eggs, produce, meat & seafood, pantry staples, and herbs & spices.
Frequently asked questions
Is PantryMetric free to use?
Yes — every conversion, substitution, and storage lookup on the site is free, with no account required. There's an optional Kitchen Conversion Pack and a support page for anyone who wants a printable version or wants to contribute toward hosting costs.
Why do some ingredients not have a cup conversion?
Some ingredients — raw meat and seafood, most notably — are conventionally sold and measured by weight, not volume, and don't have a reliable, standard cup weight. Rather than invent one, those ingredients' pages show weight-only conversions (grams, ounces, pounds).
Where do the storage and shelf-life numbers come from?
Directly from USDA FoodKeeper data and USDA FSIS food-safety fact sheets — see the Methodology page for exact sourcing and the dates each figure was last checked. These are general guidance, not a guarantee of safety: when in doubt, throw it out.
Does PantryMetric store what I search for?
No — every calculation runs entirely in your browser. Nothing you enter into a converter is sent to a server to compute a result. See the Privacy page for the full policy.
Which tool should I start with?
The Ingredient Converter is the site's most-used tool — pick any ingredient and convert between grams, cups, ounces, milliliters, and tablespoons in one place. The Substitution Finder is the second most common starting point for anyone mid-recipe and missing an ingredient.