Tomato juice glycemic index
Tomato juice has a glycemic index of 33, which is low. A 250 ml serving (1 glass) has a glycemic load of 3 (low).
Also known as: vegetable juice, V8
- Serving250 ml
- Available carbs7.8 g
- Fiber1 g
- Sugars6.5 g
- Protein2.1 g
- Calories43 kcal
Serving: 1 glass.
What to know
Tomato juice is low GI and low in carbohydrate, so its glycemic load is very small. Watch the salt in regular versions.
Glycemic load by portion size
GI stays the same whatever you eat, but glycemic load scales with the amount: eating twice as much doubles the effect on blood sugar.
| Amount | Available carbs | Glycemic load | |
|---|---|---|---|
| 50 ml | 1.6 g | <1 | Low |
| 100 ml | 3.1 g | 1 | Low |
| 250 ml · 1 glass | 7.8 g | 3 | Low |
| 500 ml · double serving | 16 g | 5 | Low |
What the studies found
The value of 33 is the median of 3 published measurements in the International Tables of Glycemic Index (2021). Results are fairly consistent (23 to 38).
Each dot is one study. Green dots followed the ISO 26642 standard method.
- 23 · Canada 2007
- 33 · USA 2002
- 38 · Australia 2002
Tomato juice compared with other drinks
Similar low-GI foods
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Frequently asked questions
Is tomato juice low glycemic?
Yes. With a GI of 33, tomato juice is in the low range (55 or less).
What is the glycemic load of tomato juice?
A 250 ml serving (1 glass) has a glycemic load of 3, which is low. Glycemic load combines GI with the amount of carbohydrate in the portion: 10 or less is low, 11 to 19 medium and 20 or more high.
Can people with diabetes eat tomato juice?
With a GI of 33 and a low glycemic load per serving, tomato juice usually fits a diabetes-friendly diet in normal portions. Everyone responds differently, so talk to your doctor or dietitian about your plan.
How many carbs are in tomato juice?
A 250 ml serving has about 8.8 g of total carbohydrate, including 1 g of fiber, leaving 7.8 g of available carbohydrate (the part that raises blood sugar). Per 100 g: 3.5 g of carbohydrate.
Nutrition facts
| per 100 g | Serving (250 ml) | |
|---|---|---|
| Calories | 17 kcal | 43 kcal |
| Carbohydrates | 3.5 g | 8.8 g |
| Available carbs | 3.1 g | 7.8 g |
| Fiber | 0.4 g | 1 g |
| Sugars | 2.6 g | 6.5 g |
| Protein | 0.9 g | 2.1 g |
| Fat | 0.3 g | 0.7 g |
Source: USDA FoodData Central, Tomato juice, canned, without salt added (SR Legacy, FDC 170545). Available carbohydrate = total carbohydrate minus fiber.
Sources: Atkinson FS, Brand-Miller JC, Foster-Powell K, Buyken AE, Goletzke J. International tables of glycemic index and glycemic load values 2021: a systematic review. Am J Clin Nutr. 2021;114(5):1625–1632. USDA FoodData Central. How we calculate each value: Methodology & sources.
Data last reviewed 2026-09-29.