Ready & Packaged Foods
All →Vegetables & Legumes
All →Desserts & Confectionery
All →Meat & Protein
All →Grains & Bakery
All →Beverages
All →Milk & Dairy
All →
Vitamin C source, low calorie, antioxidant
In season: Winter · Spring
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
1 piece (quarter) of Lemon (Quarter) (20 g) has 6 calories. That works out to 29 calories per 100 g. It contains 1.9 g of carbs, 0.2 g of protein, 0.1 g of fat and 0.6 g of fiber. Its 10.6 mg of Vitamin C covers 12% of the Daily Value. Its glycemic index is 20 (low), so it raises blood sugar slowly.
Selected: 1 piece (quarter) · 20 g
6
KCAL / 20G
Carbs
1.9g
· 1% DV
Protein
0.2g
· 0% DV
Fat
0.1g
· 0% DV
Fiber
0.6g
· 2% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 82% · Protein 9% · Fat 9%
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 6 kcal | |
| Total fat | 0.1 g | 0% |
| Saturated fat | 0.01 g | 0% |
| Trans fat | 0 g | |
| Sodium | 0.4 mg | 0% |
| Total carbohydrate | 1.9 g | 1% |
| Fiber | 0.6 g | 2% |
| Protein | 0.2 g | 0% |
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.
Log this food in EatBetter
100,000+ people use it
📸 Scan the code to get the app free.

| Serving | Amount | Calories |
|---|---|---|
| 1 piece (quarter) | 20 g | 6 kcal |
| 1 teaspoon (chopped) | 5 g | 1 kcal |
| 1 slice (thin) | 8 g | 2 kcal |
| 1 tablespoon (chopped) | 10 g | 3 kcal |
| 1 tablespoon (jumbo) | 15 g | 4 kcal |
| 1 slice (thick) | 15 g | 4 kcal |
| 1 piece (half) | 40 g | 12 kcal |
| 2 piece (quarter) | 40 g | 12 kcal |
| 1 piece (whole) | 80 g | 23 kcal |
| 100 g | 100 g | 29 kcal |
Calculated from 29 calories per 100 g.
No, lemon water does not detox your body; your liver and kidneys handle that work. Adding lemon can make water taste brighter, but it does not flush out toxins or cleanse your system.
No, lemons do not have to be refrigerated for short-term storage, but they stay fresh longer in the fridge. Keep cut lemon covered and chilled so its exposed flesh does not dry out or absorb odors.
Yes, you can freeze whole lemons, though thawed lemons become soft and are less suitable for slicing. Freeze them in a sealed bag, then use the softened fruit for juice or cooking.
The amount of juice varies with the lemon’s size, ripeness, and how firmly you squeeze it. Bring the fruit to room temperature and roll it under your palm first to help release more juice.
Yes, lemon juice can slow browning on cut apples because its acidity limits the reaction with air. Toss or brush the exposed surfaces with a little juice; too much can make the apple taste sharply sour.
Use the fine side of a box grater or carefully shave thin strips with a vegetable peeler, then chop them finely. Remove only the yellow outer layer; the white pith underneath tastes bitter.
Lemon juice can taste bitter when crushed seeds or white pith get into it, or when the lemon is heated for a long time. Strain the juice and add it near the end of cooking to keep its flavor fresh.
Yes, accidentally swallowing a few lemon seeds is generally harmless, but they are hard and bitter. Remove them when preparing juice or food if you want a smoother texture and cleaner flavor.
Rinse the lemon under running water and rub the peel with clean hands or a produce brush, then dry it. Washing is especially important before zesting because the outer peel goes directly into the food.
Yes, lemon juice can replace vinegar in many dressings, marinades, and sauces, but it gives the dish a citrus flavor rather than vinegar’s sharper taste. Add it gradually and adjust to the recipe.
Vitamins
Vitamin C
10.6mg · 12% DV
B6
0.02mg · 1% DV
B5
0.04mg · 1% DV
B1
0.01mg · 1% DV
Minerals
Copper
0.01mg · 1% DV
Potassium ⭐
28mg · 1% DV
Iron
0.12mg · 1% DV
Calcium
5.2mg · 1% DV
Sodium
0.4mg · 0% DV
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
To burn the 6 calories in 1 piece (quarter) (20 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
A quarter lemon is a small piece of fresh lemon, usually squeezed over food or served alongside it rather than eaten on its own. Around the world, it is a familiar accompaniment to fish, salads, soups and grilled dishes; its juice is also used in dressings, drinks and baking.
Its sharp, tangy juice and fragrant zest brighten rich or savoury flavours. Lemon is low in calories and provides vitamin C. Pair it with vegetables or fish, or add the juice gradually at the table so you can adjust the tartness to taste.
Very high
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Medium
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.
NOVA 1
Unprocessed
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.
No known major allergens
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
SATURATED
0.01g
MONOUNSATURATED
0g
POLYUNSATURATED
0.02g
Ask the AI nutrition coach — calories, portions, alternatives and more, answered in seconds in the app.
Nutrition data compiled from USDA FoodData Central and scientific sources.