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A single slice of bread with a soft, pale interior and a thin golden-brown crust, resting flat on a plain plate.

One slice Calories

A single slice of bread or similar sliced food

In season: Spring · Summer · Autumn · Winter

CALORIES · 100 G

265kcal

GI

75high

POTASSIUM · 100 G

115mg

FIBER · 100 G

2.7g

Quick answer

1 slice (medium) of One slice (30 g) has 80 calories. That works out to 265 calories per 100 g. It contains 14.7 g of carbs, 2.7 g of protein, 1 g of fat and 0.8 g of fiber. Its 8.4 µg of Selenium covers 15% of the Daily Value. Its glycemic index is 75 (high), so it raises blood sugar quickly.

One slice Nutrition Facts

Selected: 1 slice (medium) · 30 g

80

KCAL / 30G

Carbs

14.7g

· 5% DV

Protein

2.7g

· 5% DV

Fat

1g

· 1% DV

Fiber

0.8g

· 3% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 75% · Protein 14% · Fat 11%

One slice nutrition facts table · 1 slice (medium) (30 g)

NutrientAmount% DV
Calories80 kcal
Total fat1 g1%
Saturated fat0.21 g1%
Trans fat0 g
Sodium147 mg6%
Total carbohydrate14.7 g5%
Fiber0.8 g3%
Protein2.7 g5%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Slice of One slice?

ServingAmountCalories
1 slice (medium)30 g80 kcal
1 slice (extra small)15 g40 kcal
1 slice (thin)20 g53 kcal
1 slice (thick)40 g106 kcal
1 slice (large)50 g133 kcal
2 slice (medium)60 g159 kcal
100 g100 g265 kcal

Calculated from 265 calories per 100 g.

Frequently Asked Questions About One slice

Can you freeze one slice of bread?

Yes, one slice of bread can be frozen. Freeze slices in a sealed freezer bag, ideally separated so you can take out just one. Toast it straight from frozen or let it thaw at room temperature.

Does toasting one slice of bread reduce its calories?

No, toasting one slice of bread does not meaningfully reduce its calories. Toasting mainly removes moisture and changes the texture; butter, jam, or other toppings can change the nutrition of what you eat.

Can you eat one slice of bread with a spot of mold if you cut it off?

No. Bread is porous, so mold can spread beyond the visible spot. Discard the moldy slice and any other slices that show signs of mold rather than cutting away the affected area.

Why does one slice of bread go stale?

One slice of bread goes stale as its starch structure changes and moisture shifts over time. Refrigeration can speed this process up; keep bread sealed at room temperature for short-term use or freeze it for longer storage.

Does one slice of bread raise blood sugar?

Yes, one slice of bread can raise blood sugar because its digestible carbohydrates are broken down into glucose. Eating it with a protein-rich food, such as eggs or cheese, can make the meal more balanced.

Is one slice of bread enough for breakfast?

One slice of bread can be part of breakfast, but on its own it may not keep you satisfied for long. Pair it with protein, such as eggs, yogurt, or nut butter, and add fruit or vegetables if you like.

What can you make with one slice of bread?

One slice of bread works for a small open-faced sandwich, cheese toast, or an egg-in-a-hole. You can also cut it into croutons or use it as a topping for soup; toast it first if you want a crisp texture.

Is one slice of bread healthier toasted or untoasted?

Neither form is automatically healthier: toasting changes the texture and reduces moisture, but it does not turn one slice of bread into a lower-calorie food. The bread type and what you put on it matter more.

Can you eat one slice of bread before a workout?

Yes, one slice of bread can be a convenient source of carbohydrates before exercise. For a longer or more demanding session, you may want to pair it with a small protein source; choose what sits comfortably in your stomach.

Can dogs eat one slice of bread?

A small amount of plain bread is generally not toxic to dogs, but it offers little nutritional benefit. Avoid bread containing ingredients such as raisins, garlic, or certain artificial sweeteners, which can be dangerous to dogs.

One slice Vitamins & Minerals

Vitamins

B3

1.08mg · 7% DV

B1

0.06mg · 5% DV

Folate

11.4µg · 3% DV

B2

0.03mg · 2% DV

Minerals

Selenium

8.4µg · 15% DV

Manganese

0.21mg · 9% DV

Sodium

147mg · 6% DV

Iron

1.08mg · 6% DV

Potassium ⭐

35mg · 1% DV

One slice Glycemic Index

GLYCEMIC INDEX

75
High
0 Low5570100

GLYCEMIC LOAD

4.5
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off One slice

To burn the 80 calories in 1 slice (medium) (30 g):

🚶

20min

Walking (5 km/h)

🏃

8min

Running (8 km/h)

🚴

11min

Cycling

🏊

9min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is One slice?

One slice refers to a single cut portion of a grain-based food, most often bread taken from a loaf. What it looks and tastes like depends on the bread, but a medium slice is usually soft or lightly chewy and works as a base for toppings, a sandwich, or toast. Across many English-speaking countries, it is served at breakfast or lunch, alongside soup, or as part of a simple snack.

A medium slice weighs about 30 g and is mainly a source of carbohydrates, with some protein. Pair it with eggs, cheese, beans, or nut butter for a more filling bite; lighter toppings such as tomato or avocado keep it simple.

How Nutritious Is One slice?

Nutrient density

Low

25/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

41/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Is One slice Processed?

NOVA 3

Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does One slice Contain Allergens?

Contains these allergens:

Gluten yes
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is One slice Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

— Not suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

— Not suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

One slice Fat Profile

SATURATED

0.21g

MONOUNSATURATED

0.18g

POLYUNSATURATED

0.18g

⚖️

Omega 6:3 ratio 15:1

Above the ideal 4:1 (15:1).

Compare One slice

🍞vs🍚
One slice vs Bulgur Pilaf145 kcal more per 100 g
→
🍞vs🍝
One slice vs Whole wheat pasta141 kcal more per 100 g
→
🍞vs🥖
One slice vs Breadstick145 kcal fewer per 100 g
→
🍞vs🥯
One slice vs Simit75 kcal fewer per 100 g
→

Foods Similar to One slice

🍚

Bulgur Pilaf

120 kcal

🍝

Whole wheat pasta

124 kcal

🥖

Breadstick

410 kcal

🥯

Simit

340 kcal

🥣

Granola

450 kcal

🍚

Rice Pilaf

150 kcal

🍚

Basmati Rice Pilaf

140 kcal

🍝

Pasta (Boiled)

155 kcal

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Nutrition data compiled from USDA FoodData Central and scientific sources.