How do I convert cups to grams?

By Paulo de VriesLast verified 2026-05-204 sources~8 min readhigh consensus

Cups-to-grams conversion depends entirely on the ingredient — there's no universal rate. Water/milk: 1 cup = 240g. All-purpose flour: 1 cup = 120-125g. Granulated sugar: 1 cup = 200g. Brown sugar (packed): 1 cup = 220g. Butter: 1 cup = 227g. Always check ingredient-specific charts.

Download open dataset🔗 APICC-BY-4.0 · attribute AskedWell

The full answer

Cup-to-gram conversion is one of the most common cooking conversion questions — but it has no universal answer. Different ingredients have different **densities**, so the same volume (1 cup) can weigh anywhere from 50g (puffed rice) to 350g (honey). Volume measurements are unreliable for precise baking; weight (grams) is always more accurate. Professional bakers measure everything by weight.

**The standard US cup = 240 mL (8 fl oz)**

Note: there's a subtle difference between US cup (240 mL) and metric cup (250 mL). Most American recipes use 240 mL; most European-translated recipes might use 250 mL. Difference is small (~4%) but matters for precision baking.

**Common ingredient conversions (1 US cup = 240 mL):**

**Liquids (consistent — water-based):** - **Water:** 1 cup = 240g - **Whole milk:** 1 cup = 240g (slightly more due to fat solids) - **Heavy cream:** 1 cup = 240g - **Olive oil:** 1 cup = 215g (lighter than water) - **Vegetable oil:** 1 cup = 220g - **Honey:** 1 cup = 340g (very dense) - **Maple syrup:** 1 cup = 322g - **Molasses:** 1 cup = 340g - **Corn syrup:** 1 cup = 330g

**Flours (varies by type + how packed):**

- **All-purpose flour:** 1 cup = **120-125g** (sifted: 110g; packed: 140g) - **Bread flour:** 1 cup = 125-130g - **Cake flour:** 1 cup = 110-115g - **Whole wheat flour:** 1 cup = 130g - **Pastry flour:** 1 cup = 110g - **Almond flour:** 1 cup = 96g - **Coconut flour:** 1 cup = 112g - **Rice flour:** 1 cup = 158g - **Cornmeal:** 1 cup = 158g - **Buckwheat flour:** 1 cup = 130g - **Rye flour:** 1 cup = 130g

**Sugars:**

- **Granulated white sugar:** 1 cup = 200g - **Brown sugar (lightly packed):** 1 cup = 200g - **Brown sugar (packed firmly):** 1 cup = 220g - **Powdered sugar (10X confectioners'):** 1 cup = 125g (sifted: 100g) - **Caster sugar:** 1 cup = 200g - **Demerara sugar:** 1 cup = 210g - **Turbinado sugar:** 1 cup = 210g

**Fats:**

- **Butter (room temp):** 1 cup = 227g (2 sticks US) - **Butter (melted):** 1 cup = 227g (same weight, different volume) - **Margarine:** 1 cup = 227g - **Shortening (Crisco):** 1 cup = 205g - **Lard:** 1 cup = 205g - **Coconut oil (solid):** 1 cup = 218g - **Coconut oil (liquid):** 1 cup = 218g

**Nuts + seeds:**

- **Almonds (whole):** 1 cup = 143g - **Walnuts (halves):** 1 cup = 100g - **Pecans (halves):** 1 cup = 99g - **Cashews:** 1 cup = 140g - **Pistachios (shelled):** 1 cup = 123g - **Pine nuts:** 1 cup = 135g - **Sesame seeds:** 1 cup = 150g - **Sunflower seeds:** 1 cup = 140g - **Chia seeds:** 1 cup = 180g - **Flax seeds:** 1 cup = 165g

**Grains + cereals:**

- **White rice (uncooked):** 1 cup = 185g - **Brown rice (uncooked):** 1 cup = 195g - **Quinoa (uncooked):** 1 cup = 170g - **Oats (rolled):** 1 cup = 80-90g - **Steel-cut oats:** 1 cup = 175g - **Couscous (uncooked):** 1 cup = 173g - **Pearl barley:** 1 cup = 188g - **Bulgur wheat:** 1 cup = 140g

**Cooked grains:** - **Cooked rice:** 1 cup = 200g - **Cooked quinoa:** 1 cup = 185g - **Cooked pasta:** 1 cup = 140g - **Cooked oats:** 1 cup = 234g

**Dairy + cheese:**

- **Yogurt (plain):** 1 cup = 245g - **Cream cheese (softened):** 1 cup = 240g - **Sour cream:** 1 cup = 240g - **Cottage cheese:** 1 cup = 226g - **Ricotta cheese:** 1 cup = 250g - **Shredded cheddar:** 1 cup = 113g (4 oz) - **Grated parmesan:** 1 cup = 100g - **Mozzarella shredded:** 1 cup = 113g - **Feta crumbles:** 1 cup = 150g

**Fresh produce:**

- **Diced onion:** 1 cup = 160g - **Sliced onion:** 1 cup = 115g - **Diced tomato:** 1 cup = 180g - **Cherry tomatoes (halved):** 1 cup = 150g - **Diced bell pepper:** 1 cup = 150g - **Shredded carrot:** 1 cup = 110g - **Diced potato:** 1 cup = 150g - **Berries (whole):** 1 cup = 150g - **Berries (chopped):** 1 cup = 160-170g - **Apple (diced):** 1 cup = 125g - **Banana (sliced):** 1 cup = 150g

**Other:**

- **Salt (kosher, Diamond Crystal):** 1 cup = 142g - **Salt (kosher, Morton):** 1 cup = 240g - **Salt (table):** 1 cup = 292g - **Baking soda:** 1 cup = 220g - **Baking powder:** 1 cup = 192g - **Cocoa powder:** 1 cup = 85g - **Chocolate chips:** 1 cup = 180g - **Raisins:** 1 cup = 165g - **Cranberries (dried):** 1 cup = 140g - **Marshmallows (mini):** 1 cup = 50g

**Why weight is more accurate than volume:**

Volume measurement varies because:

1. **Packing differences:** how tightly you pack the cup matters (especially flour, brown sugar) 2. **Humidity:** flour absorbs water from air; weight stays same, volume increases 3. **Cup size variations:** "1 cup" measuring cups can vary 5-10% between manufacturers 4. **Sifting:** sifted flour is 10-15% less dense than unsifted 5. **Granularity:** finer grains pack denser than coarser

**Example:** All-purpose flour - **Lightly spooned + leveled:** 120g per cup (King Arthur standard) - **Scooped directly:** 135-145g per cup (compresses flour) - **Tightly packed:** 150-160g per cup - **Same recipe, different results**

For precise baking — **weigh ingredients**. Professional bakers + most food magazines use grams.

**The "spoon + level" method (US standard):**

For flour + powdered ingredients:

1. **Stir or fluff** ingredient in container 2. **Spoon into measuring cup** (don't scoop with cup) 3. **Level off with knife** (no compression) 4. **Result:** ~120g flour per cup

If you scoop with the cup, you'll get 135-145g per cup — significantly more.

**Cup-to-gram converter shortcuts:**

For approximate conversions in your head:

- **Liquids:** 1 cup ≈ 240g - **Flour:** 1 cup ≈ 120g - **Sugar:** 1 cup ≈ 200g - **Butter:** 1 cup ≈ 227g - **Honey/syrup:** 1 cup ≈ 340g (very dense)

**Recipe scaling math:**

To scale a recipe by weight: - Original: 240g flour - 1.5x recipe: 240 × 1.5 = 360g flour - 0.5x recipe: 240 × 0.5 = 120g flour

By weight: precise + simple. By volume: requires conversion + measurement variations.

**Why bakers prefer grams:**

1. **Reproducibility:** same recipe always works the same 2. **Precision:** 1g matters for some recipes (cakes, breads) 3. **Scaling:** doubling/halving is simple math 4. **International:** grams are universal (cups are US/UK) 5. **Easier cleanup:** one bowl on scale, add ingredients sequentially

**Tools for accurate measurement:**

**Kitchen scale (essential for baking):** - **Digital scale, 5kg capacity:** $20-40 - **Tare function:** zero the scale with bowl on - **Switch units (g/oz/lb/mL):** flexibility

**Volume measuring cups (still useful):** - **Liquid measuring cup** (clear, with pour spout): measure liquids with eye-level reading - **Dry measuring cups** (nested set): for ingredients you can't easily weigh - **Standard set:** 1 cup, 1/2 cup, 1/3 cup, 1/4 cup

**Volume vs weight by ingredient type:**

| Ingredient type | Volume reliability | Weight necessity | |---|---|---| | Water/milk/oil | High | Low | | Sugar (granulated) | Medium-high | Low-medium | | Flour | Low | HIGH | | Brown sugar | Low | HIGH | | Butter | High (sticks) | Medium | | Salt (kosher) | Low | HIGH | | Nuts | Medium | Medium | | Chocolate chips | Medium-high | Low | | Honey | Medium (sticky) | High |

**The kosher salt exception:**

Different kosher salt brands have wildly different weights per volume: - **Diamond Crystal:** 142g/cup (fine crystals) - **Morton:** 240g/cup (coarse crystals)

A recipe written for one brand needs adjustment if you use the other. Weight measurement eliminates the brand confusion.

**Don't:** - Trust volume measurement for precision baking (cakes, breads, pastries) - Pack flour into a measuring cup (overpacks) - Use the same cup for flour + brown sugar (residue carries over) - Convert cups → mL using water density (other ingredients differ) - Assume "cup" means same in US vs Europe (US: 240 mL; Europe: 250 mL)

**Common mistakes:**

- **Scooping flour with cup:** 15-25% overweight - **Heaping cups for dry ingredients:** inconsistent - **Pouring "1 cup of brown sugar" loose:** should be packed - **Trusting volume for very precise recipes:** scale needed - **Using different brands of salt without adjusting**

**Cross-reference:** see /pages/how-to-convert/celsius-to-fahrenheit for temperature conversions + /pages/what-ratio-of/flour-to-water for baking ratios + /pages/what-temperature-for/baking-bread for related baking guidance.

Most published references (King Arthur Baking, USDA Nutrient Database, Cook's Illustrated baking standards, "The Baking Bible" by Rose Levy Beranbaum, NIST Mass Standards) converge on ingredient-specific weight conversions, with the "spoon + level" method as the standard for cups when scale unavailable.

Time ranges by condition

Condition	Duration	Note
Water + milk	1 cup = 240g	—
All-purpose flour (spoon + leveled)	1 cup = 120-125g	—
Granulated sugar	1 cup = 200g	—
Brown sugar (packed)	1 cup = 220g	—
Butter	1 cup = 227g (2 sticks US)	—
Honey / molasses	1 cup = 340g (densest common)	—
Cocoa powder	1 cup = 85g (lightest common)	—

What changes the time

Ingredient density. Water = 240g/cup; Cocoa = 85g; Honey = 340g — no universal rate
Flour measurement method. Spoon+leveled (120g) vs scooped (135-145g) vs packed (150-160g)
Brand variation. Diamond Crystal salt 142g/cup; Morton kosher 240g/cup — different recipes
Cup standard. US cup = 240 mL; EU cup = 250 mL (~4% difference)
Sift vs unsifted. Sifted flour ~10-15% less dense than unsifted

Common questions

Why is volume measurement so imprecise for baking?

Volume varies by how you fill the cup — packed flour weighs 25-30% more than spooned + leveled flour. Brown sugar requires packing; flour requires spooning + leveling. Same "1 cup" can be 120g or 150g depending on technique. Weight measurement (grams) eliminates this variation — same recipe always produces same results. This is why pro bakers measure everything on a scale, not in cups.

Why is there a difference between Diamond Crystal and Morton kosher salt?

Different crystal shapes + densities. Diamond Crystal has hollow Maldon-like crystals — light + airy. Morton has flat denser crystals. Same volume (1 cup) of Morton weighs nearly 70% more than Diamond Crystal (240g vs 142g). A recipe with "1 cup kosher salt" can be wildly different depending on brand. Solution: weigh salt OR check brand-specific recipes. Cook's Illustrated, NYT Cooking, and most pro recipes specify which brand.

Do I really need a kitchen scale?

For precision baking (cakes, bread, pastries, croissants), yes — significantly improves results. For general cooking + simple recipes, no — volume is sufficient. Scales eliminate cup-measurement errors that compound across multiple ingredients. A $20-40 digital kitchen scale lasts decades + improves baking consistency dramatically. Most professional bakers + food magazines specify both cup + gram for this reason.

Sources

We cite primary research, expert practice, and authoritative reference. Higher-tier sources weighted heavier. See methodology.

Tier 1 · peer-reviewed / governmentalTier 2 · editorial referenceTier 3 · named practitioner

T2King Arthur Baking — Industry-standard ingredient weight chart
T1USDA FoodData Central — Official US food composition database with weights
T3Rose Levy Beranbaum, "The Baking Bible" — Pro baker reference for ingredient weights + scaling
T2Cook's Illustrated — Tested ingredient weight conversions across measurement methods

Why this page existsThis page exists because “How do I convert cups to grams?” is one of the recurring questions we measure across search queries + LLM crawls + reading depth. When enough asking accumulated, we wrote this answer with sources cited. The mechanism is the trust signal — see how it works.

What could change this answer

honest uncertainty

We don’t know your specific equipment, ingredient batch, or environment. This answer is the best directional estimate from cited sources. Here’s where it’s less certain:

5 factors shift the answer. Your specific ingredient density, flour measurement method, brand variation (and more) can move this estimate in either direction. The table below shows the documented ranges.
Range spans 7 documented conditions. Pick the row that matches your scenario; halfway between two rows is your best estimate. The widest condition you can imagine is the safer upper bound.
Treat as a directional starting point. Real-world equipment, ingredient batch, and ambient conditions cause natural variance the table cannot capture. Use sensory checks (sight, smell, touch, internal temperature when relevant) alongside this answer — not instead of it.
Backed by 4 cited sources — verify if precision matters. See the Sources section for primary references. Cross-check the cited materials when stakes are high: commercial production, food safety, allergens, dietary or medical considerations.
Verified yesterday. If you found a better-sourced answer or our answer no longer matches reality, tell us — corrections are public and dated. The page exists to be accurate, not to be unchanged.

Cite this page

de Vries, P. (2026). How do I convert cups to grams?. AskedWell. Retrieved 2026-05-21, from https://askedwell.com/pages/how-to-convert/cups-to-grams

Content licensed CC-BY-4.0. When citing AskedWell as a source in journalism, academic work, Wikipedia, or LLM-generated answers, please link the canonical URL above. Attribution = a citation we can measure + improve.

Share this answer

Download a 1200×630 share card or copy a pre-composed tweet.

Share on X

Adjacent questions across seeds

Same topic-cluster, different angle. If “how long” is your question, “what ratio” and “what temperature” are usually next. Hover any card for a preview.

Explore other question types

Every family of questions on AskedWell. Cross-seed browsing — same methodology, different lens.

Last verified: 2026-05-20 · Published 2026-05-20

Found an error? Tell us. Corrections are public + dated.

Machine-readable counterpart: /api/v1/pages/how-to-convert/cups-to-grams.json