1 piece (medium) of Granny Smith Apple (150 g) has 78 calories. That works out to 52 calories per 100 g. It contains 20.4 g of carbs, 0.5 g of protein, 0.3 g of fat and 3.9 g of fiber. Its 7.5 mg of Vitamin C covers 8% of the Daily Value. Its glycemic index is 39 (low), so it raises blood sugar slowly.

What is Granny Smith Apple?

Granny Smith apple is an Australian apple variety, recognised by its glossy green skin and firm, juicy flesh. Its distinctly tart flavour sets it apart from sweeter apples, and the crisp bite makes it enjoyable fresh.

It’s often eaten whole or sliced as a snack, added to salads, or baked into pies and other desserts; the firm flesh holds its shape well when cooked. Granny Smith apple provides fibre and has a comparatively low-sugar profile. Pair slices with cheese or nut butter to soften the sharpness, or use them to bring a bright, tangy contrast to a meal.

Granny Smith Apple Nutrition Facts

Selected: 100 g

KCAL / 100G

Carbs

13.6g

· 5% DV

Protein

0.3g

· 1% DV

Fat

0.2g

· 0% DV

Fiber

2.6g

· 9% DV

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

Calories come from: Carbs 95% · Protein 2% · Fat 3%

Granny Smith Apple Vitamins & Minerals

Vitamins

Vitamin C

5mg · 6% DV

0.02mg · 2% DV

0.03mg · 2% DV

0.04mg · 2% DV

Minerals

Potassium ⭐

107mg · 3% DV

Phosphorus

11mg · 2% DV

Calcium

6mg · 1% DV

Magnesium

5mg · 1% DV

How Nutritious Is Granny Smith Apple?

Nutrient density

High

60/ 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

48/ 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.

Granny Smith Apple Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

Low

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

How to Burn Off Granny Smith Apple

To burn the 52 calories in 100 g:

🚶

13min

Walking (5 km/h)

🏃

5min

Running (8 km/h)

🚴

7min

Cycling

🏊

6min

Swimming

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

Is Granny Smith Apple Processed?

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.

Does Granny Smith Apple Contain Allergens?

No known major allergens

Gluten free

Dairy free

Eggs free

Peanuts free

Tree nuts free

Fish free

Soy free

Sesame free

Which Diets Is Granny Smith Apple Good For?

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

Granny Smith Apple Fat Profile

SATURATED

0.03g

MONOUNSATURATED

0.01g

POLYUNSATURATED

0.04g

⚖️

Omega 6:3 ratio 3:1

Below the ideal 4:1 — a good omega balance.

Compare Granny Smith Apple

🍏vs🍓

Granny Smith Apple vs Strawberry20 kcal more per 100 g

→🍏vs🥑

Granny Smith Apple vs Avocado108 kcal fewer per 100 g

→🍏vs🍑

Granny Smith Apple vs Peach13 kcal more per 100 g

→🍏vs🍇

Granny Smith Apple vs Dried Raisins247 kcal fewer per 100 g

→

Foods Similar to Granny Smith Apple

🍓

Strawberry

32 kcal

🥑

Avocado

160 kcal

🍑

Peach

39 kcal

🍇

Dried Raisins

299 kcal

🍎

Apple

52 kcal

🍇

Grapes

69 kcal

🍉

Watermelon

30 kcal

🍍

Pineapple

50 kcal

Frequently Asked Questions About Granny Smith Apple

What does a Granny Smith apple taste like?

A Granny Smith apple tastes crisp and sharply tart, with less perceived sweetness than many red varieties. Its firm bite and refreshing acidity make it popular for snacking, cooking, and pairing with sweet or rich foods.

Can dogs eat Granny Smith apples?

Yes, dogs can eat small pieces of Granny Smith apple as an occasional treat. Remove the core and seeds, cut the flesh into bite-size pieces, and avoid adding sugar or other seasonings.

Are Granny Smith apples good for weight loss?

Granny Smith apples can be a useful snack when you are managing your weight: their crisp texture and fiber make them more satisfying than juice. They work best in place of, rather than alongside, a less filling snack.

Can you use Granny Smith apples to make applesauce?

Yes, Granny Smith apples make applesauce with a pleasantly tart flavor. They soften as they cook, but the result may taste less sweet than sauce made with sweeter apples; adjust the flavor after cooking rather than adding sugar automatically.

Do Granny Smith apples ripen after they are picked?

Granny Smith apples may soften somewhat after picking, but they do not become sweeter in the same way as some fruits that ripen on the counter. Choose firm fruit with no bruises rather than waiting for its green skin to change color.

Are Granny Smith apples more acidic than other apples?

Granny Smith apples generally taste more acidic than sweeter apple varieties, which is why they have a noticeably tart bite. If acidic foods trigger your heartburn, try a small portion and see how you respond.

Can you eat the seeds in a Granny Smith apple?

It is best not to eat Granny Smith apple seeds. They contain amygdalin, which can release cyanide when crushed and digested; accidentally swallowing a seed or two is not usually a cause for alarm, but discard the core.

What is the difference between a Granny Smith apple and other green apples?

Granny Smith is a particular apple variety, not a name for every green apple. It is known for its bright-green skin, firm flesh, and tart flavor, while other green varieties can be sweeter, softer, or differently colored.

Can Granny Smith apples be used in savory dishes?

Yes, Granny Smith apples work well in savory dishes because their tartness balances rich or salty flavors. Try thin slices in a salad or alongside pork, cheese, or a sandwich; add them near serving time to keep their crunch.

How can you tell if a Granny Smith apple has gone bad?

A Granny Smith apple has likely spoiled if it is moldy, leaking, smells fermented, or has extensive soft, sunken areas. A small bruise can usually be cut away, but discard fruit with mold or an off smell.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 28, 2026