Most juices are surprisingly low in fiber — even 100% orange juice contains roughly 0.2 g for every 100 g, while a whole orange provides around 2.4 g. This Juice Fiber per 100g Calculator helps you translate the fiber value printed on a juice carton into a standard per 100 g figure, so you can compare different brands and bottle sizes at a glance.
You can also enter the amount you actually poured into your glass, and the tool will tell you exactly how many grams of fiber that serving contributes to your daily target. It works for fruit juices, vegetable juices, bottled smoothie-style drinks with a nutrition label, and any beverage where the label lists fiber in grams.
Use the preset juice types for quick estimates or type in your own label values for a precise result. The calculator assumes a label serving size in grams; for millilitres, 1 mL is approximately equal to 1 g for water-based juices.
🥤 Juice Fiber per 100g Calculator
Find out how much dietary fiber is in your juice per 100 g and per glass. Pick a common juice below or enter values from your nutrition label.
How to Use This Calculator
Start by reading the nutrition label on your juice carton or bottle. Note the fiber value in grams and the serving size used on the label. Enter both in the first two fields above. If you would rather work with a common juice type, choose one from the Juice type dropdown and the tool will fill in a typical fiber value per 100 g for you.
The Amount you consumed field is optional. If you leave it blank, the calculator assumes you drank one label-serving. Type a different number if your glass was larger or smaller, or use the quick portion buttons to jump to 120 g, 200 g, 240 g or 330 g. Press Calculate, and you will see both the fiber density per 100 g and the total fiber for the amount you entered.
Tip: To compare two juices fairly, compare their fiber per 100 g values rather than per serving, because serving sizes often differ.
Why Juice Fiber Is Low — and How the Calculation Works
Juicing removes much of the solid plant material: the skins, seeds and fibrous pulp that give whole fruit and vegetables their dietary fiber. As a result, most juices contain well under 1 g of fiber per 100 g. The small amount that remains is mostly soluble fiber, which can survive in the liquid when pulp has not been completely filtered out.
The calculator uses a simple proportion:
Fiber per 100 g = (Fiber in serving ÷ Serving size) × 100
Worked example. A 250 g serving of a carrot-orange blend lists 0.75 g of fiber. Fiber per 100 g = (0.75 ÷ 250) × 100 = 0.30 g. If you drink 333 g (about 330 mL), total fiber = 0.30 ÷ 100 × 333 = 1.00 g.
Because juice density is close to that of water, 1 mL is approximately equal to 1 g in these calculations. For most commercial juices this approximation is within a few percent of the true value.
Typical Fiber Values in Juices
These are approximate average values from food composition databases and typical U.S. retail labels. Always check your specific brand because recipes and filtration methods vary.
| Juice type | Fiber per 100 g (approx.) |
|---|---|
| Prune juice | 1.0 g |
| Carrot juice | 0.8 g |
| Tomato juice | 0.4 g |
| Apple juice | 0.2 g |
| Orange juice | 0.2 g |
| Grape juice | 0.1 g |
| Cranberry juice cocktail | 0.1 g |
Note that many juices with added pulp or cloudy varieties contain slightly more fiber, while heavily filtered clear juices contain almost none. Nutrition labels in several countries round fiber values to the nearest 0 g or 0.5 g, so two brands can appear identical even when their true fiber content differs.
Tips for Tracking Fiber in Your Diet
- Use whole fruits for the bulk of your fiber. A medium orange provides about 2.4 g of fiber, while a glass of orange juice provides roughly 0.2–0.5 g.
- Check the serving size on the label. Bottles marketed as single servings can actually contain two or more label servings.
- Smoothies are not the same as juice. When you blend the whole fruit, the fiber remains in the drink; when you juice it, the fiber is left behind in the pulp.
- If a juice label says 0 g fiber, that does not guarantee zero in reality. In the U.S., values below 0.5 g per serving may be labeled as 0 g.
- Add an unprocessed fiber source such as chia seeds, psyllium husk or ground flaxseed to a fruit juice if you want a higher-fiber drink, but count those grams separately and introduce them gradually.
Please note: Juices can contribute calories and natural sugar quickly. For most adults, many health organizations recommend limiting fruit juice to a small daily portion and prioritizing whole fruit. This calculator is for nutrition tracking, not medical advice.
Frequently Asked Questions
How much fiber should I aim for each day?
The U.S. Dietary Guidelines suggest about 14 g of fiber for every 1,000 calories, which often works out to approximately 25 g per day for adult women and 38 g per day for adult men. Needs vary with age, activity and calorie intake.
Is fiber per 100 g the same as per 100 mL?
Almost. Because juices are mostly water, 100 mL typically weighs 100–104 g. The difference is small enough to ignore for home tracking. If the label gives fiber per serving and the serving is in mL, you can treat mL as grams.
Does juice with pulp have more fiber?
Usually, but the increase is modest. Pulp can hold some insoluble fiber, which is why cloudy orange juice with visible pulp may have slightly more fiber than a clear filtered juice. Still, both are far below the fiber content of the whole fruit.
Can I use this calculator for smoothies?
Only if you have the fiber value and serving size from the smoothie's nutrition label. Because whole blended fruit retains fiber, a smoothie's fiber per 100 g can be much higher than juice. For a homemade smoothie, you would need to calculate fiber from each ingredient.
Are store-brand and name-brand juices similar?
For 100% juices, fiber values are usually similar because the fruit source and filtering method matter more than the brand. Blends with vegetable juices, added fiber, or pulps can differ noticeably, so use the label when available.