Calories in Grape Juice: Nutritional facts for Grape Juice Types

One hundred grams (3.5 oz) of unsweetened 100% purple grape juice contains 60 calories.

One kilogram (1,000 g) of unsweetened 100% purple grape juice contains 600 calories.

One hundred milliliters (3.4 fl oz) of unsweetened 100% purple grape juice contains 60 calories.

One liter (1,000 mL) of unsweetened 100% purple grape juice contains 600 calories.

A 296 mL (10 fl oz) bottle of Welch's 100% Grape Juice contains 170 calories. A 296 mL (10 fl oz) bottle of Ocean Spray 100% Juice Concord Grape contains 160 calories. A 355 mL (12 fl oz) can of Old Orchard 100% Grape Juice concentrate, when reconstituted, contains 170 calories per 240 mL (8 fl oz) serving.

Grape juice provides some health benefits like supporting cardiovascular function and improving memory due to its high concentration of polyphenols and antioxidants. This beverage, frequently called "nectar of the vine" or "purple gold," is a nutrient-rich extract from various grape species. A list of the health benefits of grape juice are shown below.

• Improves Heart Health: Purple grape juice contains flavonoids that help prevent the oxidation of LDL cholesterol and improve the function of the lining of blood vessels. A study by Stein JH, et al. (1999), "Purple grape juice improves endothelial function and reduces the susceptibility of LDL cholesterol to oxidation in patients with coronary artery disease," confirmed that daily consumption significantly improves vascular health.
• Enhances Cognitive Function: The antioxidants in Concord grapes can reduce oxidative stress in the brain, potentially delaying age-related memory loss. Research by Krikorian R, et al. (2010), "Concord grape juice supplementation improves memory function in older adults with mild cognitive impairment," demonstrated that regular intake leads to significant improvements in verbal learning.
• Boosts Antioxidant Status: Grape juice is rich in resveratrol and quercetin, which neutralize free radicals. A study by O'Byrne DJ, et al. (2002), "Comparison of the antioxidant effects of Concord grape juice flavonoids and alpha-tocopherol on mammalian lipoprotein oxidation," showed that grape juice polyphenols are effective in reducing oxidative stress markers.
• Supports Immune System: The high concentration of Vitamin C in fortified grape juice helps the body produce white blood cells and resist infections.
• Maintains Healthy Blood Pressure: The potassium content in grape juice, providing 263 mg per 240 mL (8 fl oz) serving, helps balance sodium levels and reduce tension in blood vessel walls.
• Supports Digestive Health: While juice lacks the bulk fiber of the whole fruit, it contains tartaric acid which aids in the digestive process.
• Reduces Inflammation: Polyphenols in red and purple grape juices inhibit inflammatory pathways in the body, which can reduce the risk of chronic inflammatory diseases.
• Protects Vision: Certain compounds in grapes, such as lutein and zeaxanthin, help protect the eyes from damage caused by ultraviolet light and oxidative stress.

Grape juice has been known to cause some unwanted effects like rapid blood sugar spikes and potential weight gain due to its high natural sugar content and lack of dietary fiber. A list of the downsides of grape juice are shown below.

• High Glycemic Load: Because the juicing process removes the fiber that slows sugar absorption, grape juice causes a fast increase in blood glucose. A study by Banini AE, et al. (2006), "Muscadine grape products intake, diet and blood constituents of non-diabetic and type 2 diabetic subjects," noted that high intake can impact insulin responses in diabetic individuals.
• Risk of Dental Erosion: The combination of natural acids and high sugar content can weaken tooth enamel over time, leading to cavities and sensitivity.
• Weight Gain Potential: Grape juice is more calorie-dense than many other fruit juices, containing 152 calories per 240 mL (8 fl oz). Frequent consumption without adjusting total daily caloric intake can lead to an increase in body mass.

Digestive Distress: In some individuals, the high fructose content in grape juice can lead to bloating, gas, or diarrhea if consumed in large quantities.

The calories in grape juice change based on the specific grape variety used and the presence of added water or sweeteners. Concord purple grape juice serves as the standard, containing 152 calories per 240 mL (8 fl oz) serving. White grape juice, typically made from Niagara grapes, contains 155 calories for the same volume because these grapes possess a higher brix level, or natural sugar concentration. Red grape juice varieties offer a slightly lower energy density at 148 calories per serving. The most significant reduction occurs in "Light" grape juice products, which use dilution and non-nutritive sweeteners to bring the calorie count down to 50 calories per 240 mL (8 fl oz). Pure, undiluted Muscadine juice provides 135 calories, as this wild grape variety naturally contains less fructose than commercial Concord grapes.

Yes, the vitamin and nutrient profiles in grape juice vary significantly depending on the grape type. Purple Concord grape juice provides 34.4 mg of Vitamin C per 100 g (3.5 oz) serving, while white grape juice often provides 32.2 mg per 100 g (3.5 oz) unless further fortified. Purple juice is distinct for its high concentration of Vitamin K, providing 0.1 mcg per 100 g (3.5 oz), whereas white grape varieties contain less than 0.05 mcg. Additionally, the Vitamin B6 content in Concord juice is 0.04 mg per serving, which is 20% higher than the 0.03 mg found in most white grape juice varieties. While Vitamin C levels are often standardized through fortification in commercial products, the naturally occurring phytonutrients and B vitamins remain higher in darker, thick-skinned grape varieties.

Yes, grape juice is suitable for daily intake provided it is consumed in controlled portions. A standard daily serving of 118 mL to 240 mL (4 oz to 8 oz) provides significant amounts of polyphenols and Vitamin C which support heart health and immune function. However, the high natural sugar content and lack of dietary fiber mean that excessive consumption can contribute to a high caloric load and rapid blood sugar spikes. Individuals managing diabetes or weight should limit intake to smaller volumes or choose "Light" varieties to avoid consuming more than 35 g of sugar in a single sitting.

The origin of processed, non-alcoholic grape juice dates back to 1869 in Vineland, New Jersey, when a dentist named Thomas Bramwell Welch applied pasteurization to fruit juice. While humans have consumed fresh grape must for thousands of years, the juice would naturally ferment into wine within days. Welch utilized the recent discoveries of Louis Pasteur to heat the juice of Concord grapes, successfully killing the yeast and preventing fermentation. This allowed the juice to be bottled and stored as a non-alcoholic beverage for the first time in history. Initially marketed as "unfermented wine" for religious communion services, the product gained wider popularity during the American Temperance movement and eventually became a mainstream consumer product under the Welch’s brand. Today, the technology for producing shelf-stable grape juice has expanded globally, supporting a massive industry centered on various grape cultivars.