Cups to Grams Chart: Flour, Sugar, Butter & Baking Guide
You opened a U.S. cookie recipe that says “2 cups flour” while your scale only thinks in grams — or a European cake lists 250 g sugar and you only own measuring cups. Both problems need the same fix: convert by ingredient density, not a flat “1 cup = 240 g” rule. A free cups to grams converter does that math for flour, sugar, butter, cocoa, oats, and more so batters stay consistent.
This guide covers why cup weights disagree online, a practical cups-to-grams chart for bakers, spoon-and-level technique, worked examples (including reverse grams → cups), and when a scale must win over any chart. Link it beside our gram to spoon converter for small spice amounts and the pan size converter when you scale batters across pans.
Convert cups ↔ grams by ingredient, not a flat 240 g rule
Free cups to grams converter — flour, sugar, butter, liquids, and 30+ pantry staples.
Why “1 cup = 240 grams” Breaks Baking Recipes
A US cup is a fixed volume (about 237–240 milliliters). Grams measure mass. Only when an ingredient’s density is like water does one cup land near 240 g. Dry ingredients trap air between particles; liquids and oils don’t pack the same way. That is why scooping a cup of cocoa and a cup of honey are completely different weights — and why generic converters that ignore the ingredient quietly sabotage cookies, cakes, and bread.
Same 1 cup, totally different grams
- Cocoa powder: ~85 g per cup — light, airy, easy to over-measure
- All-purpose flour: ~125 g per cup (spooned & leveled)
- Granulated sugar: ~200 g per cup
- Honey or maple: ~315–340 g per cup — dense and sticky
If a recipe wants 2 cups of flour and you convert both cups as “480 g of anything,” you may pour nearly double the sugar mass of a flour recipe or starve a honey formula. Always convert per ingredient.
Cups to Grams Formula (and Reverse)
The free cups to grams calculator stores grams-per-cup values and also shows tablespoon / teaspoon equivalents derived from US volume (1 cup = 16 tbsp = 48 tsp). Chart numbers below assume a standard US cup and typical home kitchen packing methods noted in each section.
Cups to Grams Chart: Flour & Starches
Flour is the #1 search behind “cups to grams” because small packing errors shatter structure (too much flour = dry cake or stiff dough). Values are for spoon-and-level unless noted.
1 cup all-purpose flour ≈ 125 g
1 cup bread flour ≈ 130 g
1 cup cake flour ≈ 114 g
1 cup whole wheat flour ≈ 120 g
1 cup almond flour ≈ 96 g
1 cup cornstarch ≈ 128 g
Scooping from the bag can pack AP flour to 140–160 g per “cup” — adding 15–30% more flour without noticing. If online bakers weigh 120 g and you weigh 155 g at the same cup mark, the recipe will not behave the same.
Cups to Grams Chart: Sugars & Sticky Sweeteners
1 cup granulated sugar ≈ 200 g
1 cup packed brown sugar ≈ 220 g
1 cup powdered sugar ≈ 120 g
1 cup honey ≈ 340 g
1 cup maple syrup ≈ 315 g
Brown sugar must be firmly packed to match packed charts — loosely filled cups come in light. Honey should be measured after lightly oiling the cup if you care about scrapable accuracy, or better: weigh the jar-on/jar-off difference.
Convert cups ↔ grams by ingredient, not a flat 240 g rule
Free cups to grams converter — flour, sugar, butter, liquids, and 30+ pantry staples.
Fats, Dairy & Liquids (When Cups Behave Better)
Liquids and soft fats vary less from scoop style than flour, but densities still differ from plain water.
1 cup water ≈ 237 g
1 cup milk ≈ 244 g
1 cup heavy cream ≈ 238 g
1 cup butter ≈ 227 g (2 US sticks)
1 cup olive oil / vegetable oil ≈ 216–218 g
1 cup sour cream / yogurt ≈ 240–245 g
Butter sticks in the U.S. print cup and tablespoon marks; for metric recipes, converting sticks → grams (½ cup / 1 stick ≈ 113–115 g) is usually cleaner than melting into a cup.
Cocoa, Oats, Seeds & Other Pantry Staples
1 cup unsweetened cocoa ≈ 85 g
1 cup chocolate chips ≈ 170 g
1 cup rolled oats ≈ 90 g
1 cup uncooked rice ≈ 185 g
1 cup peanut butter ≈ 258 g
1 cup table salt ≈ 288 g (do not use cup-for-cup with kosher salt)
Salt is a minefield: table salt is denser than many kosher crystals. Never convert salt purely by volume between brands — if a recipe calls for grams of salt, use grams.
Worked Examples
Example 1 — Chocolate chip cookies
Recipe: 2¼ cups AP flour, ¾ cup brown sugar (packed), ¾ cup granulated sugar, 1 cup chocolate chips.
- Flour: 2.25 × 125 ≈ 281 g
- Brown sugar: 0.75 × 220 ≈ 165 g
- White sugar: 0.75 × 200 ≈ 150 g
- Chips: 1 × 170 ≈ 170 g
Example 2 — Grams back to cups
A pasta sauce needs 400 g tomatoes but you buy 400 g cans already — skip conversion. A bakery formula lists 500 g bread flour: 500 ÷ 130 ≈ 3.85 cups. Round thoughtfully for volume bakers (about 3¾–4 cups spooned), and prefer weighing for yeast dough.
How to Measure a Cup Accurately (If You Must Use Volume)
Spoon-and-level for dry flour products
- Fluff the bag or bin with a spoon to aerate settled flour.
- Spoon flour into the cup until mounded — do not tamp or shake hard.
- Level with a straight edge (knife back). Do not pack unless the recipe says “packed.”
- Use dry measuring cups for solids and liquid cups with a spout for liquids, read at eye level.
Charts are averages, not lab certificates. Brand, humidity, and method shift results. For laminated doughs, macarons, and precise ratios, convert once with the tool then bake by weight forever. Values in the converter are practical kitchen defaults for US cups — not medical or certified trade metrology.
US Cup vs Metric Cup vs Imperial
Most U.S. websites mean the US custom cup (~236.6 ml). A metric cup is often 250 ml (~5–6% more volume). Older UK recipes sometimes use Imperial cups (~284 ml). If a PDF was written in Australia, New Zealand, or continental Europe, check whether “1 cup” is metric before trusting a U.S. chart. When in doubt, prefer ingredient grams published by the recipe author.
Related Kitchen Tools on ToolMars
- Cups to Grams Converter — density-based cups ↔ grams with reverse mode
- Gram to Spoon Converter — tbsp / tsp for spices and small amounts
- Pan Size Converter — match batters across cake pans by volume
- Food Cost Calculator — cost recipes after you know true weights
Convert cups ↔ grams by ingredient, not a flat 240 g rule
Free cups to grams converter — flour, sugar, butter, liquids, and 30+ pantry staples.
Frequently Asked Questions
How many grams are in a cup of all-purpose flour?
About 120–125 g spooned and leveled. Scooping packs more and can exceed 140 g.
How many grams are in a cup of granulated sugar?
About 200 g. Packed brown sugar is closer to 220 g per cup.
Is 1 cup always 240 grams?
No — only a loose liquid estimate. Always pick the ingredient-specific grams per cup.
How do I convert cups to grams for a recipe?
Multiply cups by grams-per-cup, or use the free converter above for each ingredient line.
How do I convert grams back to cups?
Divide grams by that ingredient’s grams-per-cup (switch reverse mode in the tool).
Why doesn’t my flour match online charts?
Packing method and brand density vary. Standardize spoon-and-level or switch fully to a scale.
Are these US cups or metric cups?
US customary cups. Metric 250 ml cups hold slightly more volume — don’t mix systems blindly.
Is the cups to grams converter free?
Yes — free on ToolMars, no signup, private in your browser.