Carbs in Cup Of Sugar
How many carbs are in cup of sugar?
Cup Of Sugar has 50g net carbs per 100g — 61.5g total carbs minus 11.5g fiber — plus 7.7g protein, 30.8g fat, and 423 calories. That makes cup of sugar high in net carbs and about average for the typical snacks and sweet, which averages about 55.2g net carbs per 100g. At this carb count, cup of sugar is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per per 100 g, sourced from Open Food Facts; net carbs are computed by CarbMeNot.
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Cup Of Sugar runs higher in carbs, so portions matter. CarbMeNot tracks every gram from a photo, so you stay under your daily limit without the math.
Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is cup of sugar keto-friendly?
Cup Of Sugar is generally not keto-friendly. It has 50g net carbs per 100g (61.5g total carbs − 11.5g fiber). On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 100 g (3.5 oz) | 50g | 61.5g | 7.7g | 423 |
| 1 oz (28 g) | 14g | 17.2g | 2.2g | 118 |
How many calories are in cup of sugar?
Cup Of Sugar has 423 calories per 100g. That's alongside 7.7g protein, 30.8g fat, and 50g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 423 |
| Total carbs | 61.5g |
| Net carbs | 50g |
| Fiber | 11.5g |
| Sugar | 0g |
| Sugar alcohols | 0g |
| Protein | 7.7g |
| Fat | 30.8g |
| Sodium | 269mg |
| Potassium | 0mg |
Source: Open Food Facts (Reese's). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in cup of sugar?
- Cup Of Sugar has 61.5g of total carbs and 50g of net carbs per 100 grams.
- How many net carbs are in cup of sugar?
- Cup Of Sugar has 50g of net carbs per 100 grams (total carbs 61.5g minus 11.5g fiber).
- Is cup of sugar keto-friendly?
- Cup Of Sugar is generally not keto-friendly. It has 50g net carbs per 100g (61.5g total carbs − 11.5g fiber). On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
- How many calories are in cup of sugar?
- Cup Of Sugar has 423 calories per 100 grams.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.