1/2 cup of granulated sugar has about 387 calories (roughly 100 g); packed brown sugar is ~418 calories, while loose brown sugar is ~276.
Why This Cup-Measure Question Trips People Up
Ask three bakers for the calories in a half cup of sugar and you’ll hear three answers. The reason is simple: “a cup” doesn’t always weigh the same. Granulated sugar settles one way, brown sugar can be pressed tight or left fluffy, and powdered sugar changes a lot when sifted. Calorie math hinges on weight, not volume.
Here’s the quick way to think about it. White granulated sugar gives about 3.87 calories per gram. One full cup weighs close to 200 g, which lines up with 774 calories per cup. So the half cup that sits in most measuring scoops equals about 100 g and ~387 calories. That base number lets you convert any kitchen measure into energy with confidence.
Half Cup Of Sugar Calories: Types And Weights
Different sugars pack differently. That changes the grams in your measuring cup and the total calories you’ll log. The chart below gives kitchen-ready numbers based on standard weights many nutrition databases use. For white granulated sugar, the weight for 1 cup is 200 g; for brown sugar, you’ll see two common patterns—packed (220 g per cup) and unpacked (145 g per cup); for powdered sugar, the spread runs from 100 g per sifted cup to about 120 g per unsifted cup.
| Sugar Type | Approx. Weight (1/2 cup) | Calories |
|---|---|---|
| Granulated (white) | 100 g | ~387 kcal |
| Brown sugar (packed) | 110 g | ~418 kcal |
| Brown sugar (loose) | 72.5 g | ~276 kcal |
| Powdered sugar (unsifted) | 60 g | ~234 kcal |
| Powdered sugar (sifted) | 50 g | ~195 kcal |
Sources For The Weights And Calorie Math
White granulated sugar at 1 cup = 200 g and 774 calories comes from MyFoodData’s USDA-backed entry. That sets the per-gram energy at ~3.87 kcal. Brown sugar weights vary because of packing: a packed cup is commonly 220 g, while an unpacked cup sits near 145 g. Powdered sugar swings with sifting; USDA entries show about 100 g per cup when sifted and around 120 g per cup when unsifted. All figures refer to plain sucrose unless stated. Databases occasionally round serving sizes, so tiny variances appear. That’s completely normal.
How To Measure 1/2 Cup So Your Numbers Match
Level the scoop. Dip your measuring cup into the bag, then sweep the top with a straight edge. Don’t tap the cup; that compacts crystals and bumps the weight. If you’re using brown sugar and the recipe calls for “packed,” press it in firmly until the surface holds the imprint of your fingers. For powdered sugar, sift only if the recipe says so, since sifting lowers the grams in the cup.
A digital scale removes doubt. Place the cup on the scale, tare to zero, then pour until you hit the gram target from the table. That’s the quickest way to keep nutrition logs, recipe macros, and baked results in sync.
Granulated Sugar: The Baseline Everyone Uses
White granulated sugar is the standard many tracking apps use for “sugar.” One teaspoon is ~4 g, one tablespoon is ~12 g, a quarter cup is ~50 g, and the familiar half cup is ~100 g. Multiply any of those by ~3.87 to get calories. This entry on MyFoodData shows the 1 cup = 200 g and 774 kcal figure that anchors the math for home cooks and diet trackers alike, and it cites the USDA database behind it.
Quick mental math helps: 1 tablespoon sits near 46–48 kcal, 2 tablespoons right around 92–96, 1/4 cup near 194, and 1/2 cup near 387. If your spoonfuls are a little heaped, the numbers climb fast, so aim for level measures when accuracy matters.
Brown Sugar: Packed Vs. Loose Changes Everything
Brown sugar holds molasses, which adds stickiness and makes packing common. A packed half cup (~110 g) lands around 418 kcal. A loose half cup (~72.5 g) drops to about 276 kcal. Same volume, sharply different calories—only because the grams in the cup changed. Recipes usually say “packed” if they expect the denser measure. When the word is missing, many bakers default to loose scoops. Either way, pick one method and stay consistent from batch to batch.
Dark and light brown sugar sit within the same calorie range per 100 g. The color difference comes from molasses content, not a change in energy. Flavor and moisture shift more than the math does.
Powdered Sugar: Sifted Or Not Makes A Big Swing
Confectioners’ sugar carries ultra-fine crystals plus a bit of anti-caking starch. That fine grind traps air. A cup that’s sifted weighs less than a cup scooped straight from the bag. With the common weights above, a sifted half cup (~50 g) is near 195 kcal; an unsifted half cup (~60 g) is near 234 kcal. Both measures are common in frosting and glaze recipes, so match the technique the writer used or weigh it out.
Calorie Formula You Can Rely On
Once you know the grams in your scoop, calories fall out of a one-line formula:
Calories = grams × 3.87 (for plain sugar)
That factor comes from the cup-to-calorie entry above. It lines up with nutrition labels and the core database diet apps pull from. If you want even tighter math, use 3.89 kcal/g for powdered sugar and ~3.80 kcal/g for brown sugar, but the difference across a half cup stays within a few calories either way.
Kitchen Conversions For Granulated Sugar
Here’s a quick reference for everyday scoops. These use the 200 g per cup standard for white granulated sugar so the numbers match the half-cup math at the top.
| Measure | Grams | Calories |
|---|---|---|
| 1 teaspoon (level) | 4 g | ~16 kcal |
| 1 tablespoon (level) | 12 g | ~46 kcal |
| 1/4 cup | 50 g | ~194 kcal |
| 1/3 cup | 67 g | ~259 kcal |
| 1/2 cup | 100 g | ~387 kcal |
| 1 cup | 200 g | ~774 kcal |
What About Liquid Sweeteners?
Sometimes a recipe swaps table sugar for honey or maple syrup. Those pourables often sit in a different weight class and hold water, so you can’t reuse the numbers above. Honey runs near 64 kcal per tablespoon and maple syrup near 52 kcal per tablespoon. If you’re trading spoon for spoon, that can raise or lower the total energy in a batch even when the dessert tastes equally sweet. Plan for that when adjusting nutrition targets for drinks and sauces.
Reading Labels And Keeping Intake In Check
Nutrition labels list “Added Sugars” in grams per serving. The Daily Value sits at 50 g per day for a 2,000-calorie plan, per the FDA’s label guidance. A level half cup of granulated sugar brings about 100 g of sugar, which is double that daily value. That doesn’t mean you can’t bake—only that portions and sharing matter if you’re watching grams across the day.
For home recipes, small tweaks go a long way. Many cakes, muffins, and quick breads keep texture with a 10–20% cut in sugar. Spices like cinnamon, cardamom, and ginger bring flavor without adding grams. Citrus zest or vanilla can heighten perceived sweetness, which lets you dial totals down while keeping smiles at the table.
Troubleshooting: When Your Numbers Don’t Match Mine
Kitchen scales differ by a few grams, scoops vary in shape, and hands press brown sugar with different force. If your logged calories don’t match a calculator, look first at weight. Weigh the exact amount you put in the bowl. If a half cup of your granulated sugar lands at 95 g or 105 g, just multiply that by ~3.87 and you’ll have a number that reflects your pantry, not an average pulled from a chart.
Brand blends can nudge numbers too. Some powdered sugars carry a bit more starch; some brown sugars hold a touch more molasses. Those tweaks barely move per-gram energy, but they can change how much fits in a scoop. When precision matters—macros for an athlete, carb counts for a medical plan—use the scale every time.
Takeaway You Can Use Tonight
For granulated sugar, a half cup is ~100 g and ~387 calories. For brown sugar, packed hits ~110 g and ~418 calories, loose lands near ~72.5 g and ~276 calories. Powdered sugar swings with sifting: ~195 kcal (sifted) to ~234 kcal (unsifted) per half cup. Measure by weight when you can, and your calorie math will always line up with your plate.
Cup Sizes And Region Differences
Not every “cup” means the same amount of space. In the United States, one measuring cup equals 240 milliliters; many countries use a 250 milliliter cup. Half a cup in those places is 125 milliliters versus 120 milliliters in a U.S. set. With a flowable ingredient like sugar, that extra volume can nudge the weight in your scoop by a few grams. The change may look tiny, yet it shows up when you multiply by ~3.87 calories per gram.
Here’s a simple way to stay consistent across borders: treat the cup in your kitchen as a volume tool only, and always capture the actual grams before you log calories. If you work from a recipe written in another region, set a quick note on the page with the target grams for sugar so you don’t have to recheck every time. A small sticky note on the inside of your sugar canister with “1/2 cup granulated = 100 g” saves time and keeps your tracking steady each week.