Raw cucumber provides about 3.6 grams of total carbohydrates per 100 grams, including about 1.5 grams of dietary fiber, which leaves roughly 2 grams as an estimated net-carbohydrate value. One medium cucumber usually has about 6 to 7 grams of total carbohydrates, depending mainly on its weight and preparation.
This guide covers whole cucumbers, sliced cups, 100-gram portions, pickles, juice, and everyday serving choices. You can use the numbers to estimate a snack, compare labels, and plan meals more accurately.
Cucumber Carbs Across Common Servings
A medium cucumber does not have one fixed weight. A “medium” cucumber may weigh about 150 to 200 grams, so a 100-gram baseline gives you a more consistent starting point. Weighing the edible portion helps you avoid a difference of several grams.
Raw cucumber with peel provides the clearest baseline for your calculations. Variety, moisture, size, and growing conditions can change the figures slightly, so the table gives practical estimates rather than an exact promise for every cucumber.
| Raw serving | Approximate weight | Total carbohydrates | Dietary fiber | Estimated net carbohydrates |
|---|---|---|---|---|
| Small whole cucumber | 100 to 140 g | 3.6 to 5 g | 1.5 to 2.1 g | About 2 to 3 g |
| Medium whole cucumber | 150 to 200 g | 5.4 to 7.2 g | 2.3 to 3 g | About 3 to 4 g |
| One cup of sliced cucumber | About 119 g | About 4.3 g | About 1.8 g | About 2.5 g |
| Large whole cucumber | 200 to 300 g | 7.2 to 10.8 g | 3 to 4.5 g | About 4.2 to 6.3 g |
| 100-gram baseline | 100 g | About 3.6 g | About 1.5 g | About 2 g |
You can calculate total carbohydrates by multiplying the cucumber’s weight in grams by 0.036. A 150-gram cucumber then provides about 5.4 grams of total carbohydrates. Subtracting about 2.3 grams of dietary fiber gives an estimated 3.2 grams of net carbohydrates.
Total Carbs, Fiber, and Net Carbs
Different labels serve different purposes
The Nutrition Facts total includes digestible carbohydrate and dietary fiber. As a result, the total-carbohydrate figure does not tell you exactly how much carbohydrate your body absorbs from the serving.
Net carbohydrates offer a rough planning estimate by subtracting dietary fiber. For raw cucumber, 3.6 grams of total carbohydrates minus 1.5 grams of fiber leaves about 2.1 grams, which is usually rounded to roughly 2 grams per 100 grams.
Sugars, starch, and protein
Cucumber contains about 1.7 grams of naturally occurring sugars per 100 grams, along with very little starch or protein. The sugars come with water and fiber, so they differ from concentrated sugar in a sweet pickle brine.
USDA FoodData Central lists separate entries for raw cucumber with peel, peeled cucumber, chopped cucumber, and prepared forms. Rounding and serving descriptions can produce figures such as 2 grams, 2.1 grams, or 2.5 grams for similar practical portions.
Because serving size and cut change the totals, preparation method determines which figures are useful for meal planning.
Use total carbohydrates when the Nutrition Facts panel lists that value. Use net carbohydrates only when your meal plan subtracts fiber, and label the result as an estimate.
How Preparation Changes the Numbers
Plain and sweetened pickles
Pickling changes the recipe more than it changes the cucumber. A plain cucumber in vinegar, water, salt, and spices can remain close to the raw value, while a sweetened brine can add enough sugar to change the total noticeably.
Check the label instead of relying on the word “pickled.” One serving can mean a small spear, a slice, or a portion from a jar. Compare serving size, calories, total carbohydrates, added sugars, and sodium.
| Pickle form | Carbohydrate pattern | Main item to check | Planning value |
|---|---|---|---|
| Plain vinegar pickle | Close to plain cucumber | Added sugar and serving size | Use the label or raw baseline |
| Sweetened pickle | Can contain several grams of sugar | Sugar, syrup, or honey | Track it as a separate product |
| Pickled cucumber salad | Changes with brine and additions | Oil, sweeteners, and full recipe | Calculate the whole portion |
“Dill,” “sour,” and “unsweetened” describe style or flavor, but they do not guarantee one carbohydrate level. The ingredient list gives you better information than the variety name alone.
Peeling and added ingredients
Peeling removes some fiber and carbohydrate from the cucumber. The difference is modest for everyday tracking, yet a peeled cucumber can contain slightly less dietary fiber than the same cucumber with its skin.
Dressings can add more carbohydrates than the cucumber itself. A tablespoon of ranch, sweet chili sauce, or honey mustard may contribute more than several slices. Yogurt dips, hummus, crackers, and bread need separate entries in your meal record.
Slices, Cups, Juice, and Whole Cucumbers
A cup measures volume, not weight. One cup of sliced cucumber weighs about 119 grams and contains roughly 4 to 5 grams of total carbohydrates. A whole medium cucumber weighs about 150 to 200 grams and contains about 6 to 7 grams.
Slicing does not create a fixed conversion between cups and whole cucumbers. Large slices use more cucumber than thin slices, and a loosely packed cup can weigh less than a tightly packed cup. Chopped pieces also depend on their edible weight.
Juice creates the largest measurement issue because much of the fiber stays in the pulp. A 240-milliliter serving can weigh more than a sliced serving without providing the same amount of fiber. Juice and whole cucumber therefore should not be substituted gram for gram.
- Weigh the whole cucumber: Place it on a kitchen scale before slicing or peeling.
- Calculate total carbohydrates: Multiply raw weight in grams by 0.036.
- Calculate dietary fiber: Multiply raw weight in grams by 0.015.
- Subtract fiber: Remove the fiber estimate from total carbohydrates.
- Measure juice separately: Use the product label or recipe nutrition for milliliters.
- Record condiments: Add dip, dressing, oil, or sweetener to the snack total.
A 250-gram cucumber provides about 9 grams of total carbohydrates and 3.75 grams of fiber. That leaves an estimated 5.25 grams of net carbohydrates. This calculation does not apply directly to juice, sweetened pickles, or a salad covered with a thick sauce.
Those differences matter when fitting cucumbers into a low-carbohydrate meal, especially alongside sauces and other higher-carb additions.
Using Cucumbers in a Low-Carbohydrate Diet
Fresh cucumber contains little starch and contributes about 3.6 grams of total carbohydrates per 100 grams. Its estimated 2 grams of net carbohydrates and roughly 16 calories make it more useful for adding volume to a snack than for supplying substantial fuel.
You can use cucumber alongside eggs, tuna, chicken, or leafy greens. Compared with bread, potatoes, rice, fruit, and many snack foods, its carbohydrate amount is small, so it can add crunch and moisture without becoming the main carbohydrate source in your meal.
Your preparation choice shapes the final value more than the word “healthy” on a package. Black pepper, vinegar, lemon, and herbs leave the cucumber’s baseline largely intact. Pickles add salt and acidity, while sauces add carbohydrate according to the recipe.
- Plain slices: Pair them with eggs, tuna, chicken, or greens.
- Unsweetened pickles: Check the serving size and sodium content.
- Seasoned cucumber: Use vinegar, herbs, garlic, or lemon before a sugary dressing.
- Dip-based snack: Add the dip’s carbohydrates to the cucumber total.
A ketogenic meal plan can include cucumber because the estimated net carbohydrate value is low. Cucumber alone does not define the carbohydrate level of the meal, so your daily food choices still determine the total. Its water and small amount of fiber also help increase volume.
Accurate Tracking and Source Checks
Name the food before entering a number in your food log. USDA FoodData Central values for raw cucumber with peel can differ from values for peeled, chopped, or pickled cucumber. For a packaged product, its Nutrition Facts panel and serving description take priority over a raw-cucumber estimate.
Several common errors create larger changes than normal cucumber variation. Counting total carbohydrates as net carbohydrates, treating a whole medium cucumber as one cup, or ignoring pickle added sugar can shift your result by several grams.
- Identify the weight: Weigh the edible cucumber in grams.
- Find total carbohydrates: Start with about 3.6 grams per 100 grams.
- Estimate fiber: Start with about 1.5 grams per 100 grams.
- Calculate the estimate: Subtract fiber from total carbohydrates and round sensibly.
A 200-gram cucumber supplies about 7.2 grams of total carbohydrates and 3 grams of fiber, leaving about 4.2 grams of net carbohydrates. Eating half means halving the edible cucumber portions too, not halving the whole cucumber while keeping the same dressing.
Check the label for pickles, salads, and packaged cucumbers that contain added oil, syrup, honey, sugar, or a different serving size. Raw-cucumber data cannot account for every recipe.
Bottom Line
Use 3.6 grams of total carbohydrates and 1.5 grams of dietary fiber per 100 grams as your raw-cucumber baseline. Subtracting fiber gives roughly 2 grams of net carbohydrates. Weighing the cucumber and checking labels for pickles or sauces gives you the most accurate estimate for your snack or meal.
FAQ
How many carbohydrates are in one cucumber?
A medium whole cucumber contains about 6 to 7 grams of total carbohydrates, with roughly 2 to 3 grams of dietary fiber and about 3 to 4 grams of net carbohydrates. Your estimate depends on its weight, which can range from roughly 150 to 200 grams. Weighing yours gives you a more useful number.
What is the carbohydrate content of 100 grams of cucumber?
Raw cucumber with peel contains about 3.6 grams of total carbohydrates per 100 grams. About 1.5 grams is dietary fiber, leaving roughly 2 grams as an estimate of net carbohydrates. Cucumber also provides about 16 calories per 100 grams.
How many carbs are in one medium cucumber?
About 6 to 7 grams of total carbohydrates come from a typical medium cucumber. Its dietary fiber contributes roughly 2 to 3 grams, producing an estimated 3 to 4 grams of net carbohydrates. Size and peeling can change the result.
How many carbs are in a cup of sliced cucumber?
At roughly 119 grams, one cup of sliced cucumber contains about 4 grams of carbohydrates.3 grams of total carbohydrates. It supplies roughly 1.8 grams of dietary fiber, leaving about 2.5 grams as an estimated net-carbohydrate amount.
Do cucumbers have total carbs or net carbs?
Cucumbers have both figures in nutrition planning. Total carbohydrates come from the broader Nutrition Facts value, while estimated net carbohydrates subtract dietary fiber. A 100-gram serving has about 3.6 grams total and about 2 grams estimated net carbohydrates.
How much dietary fiber and sugar does cucumber contain?
Raw cucumber with peel provides about 1.5 grams of dietary fiber and 1.7 grams of naturally occurring sugars per 100 grams. It also has about 16 calories. A medium cucumber weighing 150 to 200 grams provides roughly 2.3 to 3 grams of fiber.
