How many calories in grapes?

100g of grapes has around 73 calories with 17g of carbohydrates. Green and red grapes are nutritionally very similar — red grapes have slightly more antioxidants but the same calorie count.

Are grapes high in sugar?

Grapes contain 16g of sugar per 100g — higher than most fruits. They have a medium GI of around 46-53. Eating a large bowl can cause a moderate glucose spike.

Are green and red grapes the same calories?

Virtually identical — both are 70-75 kcal per 100g. Green grapes are marginally lower in sugar but the difference is negligible.

Glucose: MediumNOVA 1

How Many Calories for Grapes?

Q: What is the glycemic index of grapes?

Grapes has a glycemic index of 50, which is classified as Low GI. Red grapes contain 17g of sugar per 100g, which is higher than most common fruits (strawberries have 4.9g, blueberries 9.1g). Their GI of 46-53 is medium, meaning a moderate blood sugar response. The sugars in grapes are predominantly glucose and fructose in roughly equal proportions. The relatively low fibre content (0.6g/100g) means less buffering of the sugar absorption compared to berries. Portion control is the key SpikeSaver strategy â€” grapes are very easy to snack through an entire 500g punnet (85g sugar).

1 portion (~80g, approximately 12 grapes) of grapes contains around 58 calories (73 kcal per 100g). Grapes is classified as NOVA 1 (unprocessed).

Nutrition per 100g

Nutrient	Per 100g	Per serving
Energy	73 kcal / 308 kJ	58 kcal
Protein	0.6g	0.5g
Carbohydrates	17g	13.6g
of which sugars	17g	—
Fat	0.1g	0.1g
of which saturated	0g	—
Fibre	0.6g	—
Salt	0g	—

Serving size: 1 portion (~80g, approximately 12 grapes) · Source: Tesco product page, October 2025

Glucose impact

Glycemic Index

Medium

Glucose risk

Red grapes contain 17g of sugar per 100g, which is higher than most common fruits (strawberries have 4.9g, blueberries 9.1g). Their GI of 46-53 is medium, meaning a moderate blood sugar response. The sugars in grapes are predominantly glucose and fructose in roughly equal proportions. The relatively low fibre content (0.6g/100g) means less buffering of the sugar absorption compared to berries. Portion control is the key SpikeSaver strategy — grapes are very easy to snack through an entire 500g punnet (85g sugar).

Processing level

NOVA 1 (unprocessed)

Whole red grapes are an unprocessed single-ingredient fruit — just grapes picked and packed. They have no additives, preservatives, or flavourings. Both Tesco products are plain seedless grapes with no ingredient list beyond the fruit itself.

Grapes at Tesco

Source: Tesco product page, October 2025

Tesco Red Seedless Grapes 500G

£1.90*NOVA 1 (unprocessed)

Tesco Finest Red Grapes Seedless 500G

£2.60*NOVA 1 (unprocessed)

*Prices were correct at the time of collection and may have since changed. Check Tesco.com for current pricing.

What to watch for when shopping

Red grapes are always NOVA 1 when bought whole and fresh. The main concern is sugar density — at 17g per 100g, grapes have roughly 3.5 times the sugar of strawberries. A full 500g punnet contains 85g of sugar (over 21 teaspoons). Dried grapes (raisins, sultanas) concentrate this further to ~59g sugar per 100g. Grape juice removes the fibre entirely and delivers pure sugar water. Stick to fresh whole grapes in controlled portions. Budget tip: Tesco Red Seedless Grapes 500G at £1.90 is 70p cheaper than the Finest variant with identical nutrition.

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