Carbohydrates in a cucumber are very low: about 3.6 g per 100 g, ~1.9 g in ½ cup sliced, and ~7 g in one medium cucumber.
Cucumber is a water-rich vegetable with minimal starch and naturally low sugars. If you’re tracking carbs for weight goals, blood sugar, or sports fueling, it’s a friendly add-in that brings crunch, hydration, and a small fiber lift without moving the macro needle much. Below you’ll find exact carbohydrate numbers by common servings, quick “net carb” math, tips for salads and pickles, and smart swaps that keep flavor high and carbs steady.
Carbohydrates In A Cucumber By Serving Size
Numbers below use standard nutrition references for raw cucumber with peel. “Net carbs” here are total carbs minus fiber, which many low-carb eaters track. If you follow a different method, stick with total carbs.
Table #1: within first 30% of the article; ≥7 rows; ≤3 columns
| Serving | Total Carbs (g) | Net Carbs (g) |
|---|---|---|
| 100 g (with peel) | ~3.63 | ~3.1 (≈3.63 − 0.5 g fiber) |
| ½ cup sliced (~52 g) | ~1.9 | ~1.6 |
| 1 cup sliced (~104 g) | ~3.8 | ~3.3 |
| 1 medium cucumber (~200 g) | ~7.3 | ~6.3 |
| 5 slices (~45 g) | ~1.6 | ~1.4 |
| 8–9 spears (~150 g) | ~5.4 | ~4.7 |
| 300 g (large salad base) | ~10.9 | ~9.4 |
These figures reflect raw cucumber. Once you add dressings or sweet pickling brine, carbs can jump fast. Two smart rules: weigh or estimate the cucumber itself for baseline carbs, then add the labeled carbs from dressings, cheeses, nuts, and croutons.
Cucumber Carbs Explained In Plain Language
Most of a cucumber is water. The rest is a little starch, natural sugars, and a touch of fiber. That’s why the carbohydrate count stays low per bite and the glycemic hit tends to be small. For the same plate volume, cucumbers bring far fewer carbs than grains or starchy sides, which makes them handy for low-energy plates or for bulking a salad without pushing daily totals.
Where The Numbers Come From
Carb values here align with widely used nutrition datasets. A standard reference shows ~3.63 g carbohydrates per 100 g of cucumber with peel, with ~0.5 g fiber. A ½ cup sliced serving (~52 g) lands near ~1.9 g carbs. For deeper lookups, use USDA FoodData Central, which lists raw cucumber entries by form and serving size.
Net Carbs Vs Total Carbs
“Net carbs” subtract fiber from total carbohydrates. Some patterns use that number to plan meals. If your clinician or program uses total carbs, keep using that approach. Either way, the gap for cucumber is small since the fiber per serving is modest.
Cucumber Varieties And What Changes
Grocery bins carry a few types: standard slicing cucumbers, long English cucumbers, and small Persian cucumbers. All three sit in the same low-carb ballpark per 100 g. Differences you’ll notice are mostly texture and seeds, not major carbohydrate swings.
With Peel Or Without Peel
Peel adds a little fiber and phytonutrients. If you prefer peeled for texture, the carb change per serving is tiny. Keep the prep you enjoy; your salad total won’t shift much either way. If you want every gram to count, leave the peel on and slice thin.
Fresh Cucumber Vs Pickles
Dill pickles in a vinegar-salt brine add almost no carbs beyond the cucumber itself. Sweet pickles and bread-and-butter styles use sugar; that’s where carb counts climb. A single sweet pickle spear can rival a whole cup of sliced fresh cucumber in carbs. If reducing added sugars, check the label and pick “dill,” “no sugar added,” or “kosher dill” styles.
How Cucumber Fits Daily Carb Targets
Most adults plan carbs over a daily range, then spread them across meals. A common reference range is ~45%–65% of calories from carbohydrate, adjusted to needs and preferences. Cucumber’s tiny contribution lets you stack greens, herbs, and protein while keeping room for other carb foods you value, like fruit, beans, or grains.
Added Sugars And Salad Sauces
Raw cucumber contains naturally occurring sugars found in vegetables. The extra carbs people run into come from the bottle. Many dressings, glazes, and pickling liquids contain added sugars. U.S. labels break out “Added Sugars” so you can pick a jar or bottle that fits your target. See the FDA’s guide on added sugars on the Nutrition Facts label for examples and daily limits used on packaging.
Portion Visuals And Quick Math
Weighing food gives the best precision. When that’s not practical, use simple visuals. A medium cucumber around 8¼ inches weighs close to 200 g. Half of it is roughly 100 g—about ~3.6 g total carbs. A well-packed measuring cup of thin slices is about ~104 g—near ~3.8 g total carbs. These anchors let you scale up or down fast in your head.
Salad Add-Ins That Nudge Carbs Up
Veggies like tomatoes, onions, and bell peppers bring small adds. Beans, croutons, grains, sweet corn, and sweet dressings add more. If you’re watching carbs closely, pick creamy or oil-and-vinegar dressings without sugar, swap croutons for roasted seeds, and keep beans or grains measured with a spoon.
Carb Ranges For Common Cucumber Plates
Use this cheat sheet to estimate totals when you’re building a bowl or plate. Values include the cucumber portion and typical amounts of add-ins. Brands vary, so a quick label check keeps you accurate.
Table #2: after 60% of the article; ≤3 columns
| Plate Or Prep | Approx Carbs (g) | Notes |
|---|---|---|
| Simple cucumber salad (1 cup slices + oil, vinegar) | ~4–5 | Vinegar/oil add near-zero carbs; tiny sugar if any premixed dressing. |
| Greek-style side (1 cup cucumber + tomato + feta) | ~7–9 | Tomato adds ~2–3 g; cheese adds taste, not carbs. |
| Raita/tsatsiki (½ cup yogurt + ½ cup cucumber) | ~6–10 | Depends on plain vs sweetened yogurt; choose plain to stay lower. |
| Dill pickle spear (no sugar added) | ~0.5–1 | Mostly the cucumber itself; check sodium instead of carbs here. |
| Sweet pickle spear | ~3–5 | Added sugars raise the count; labels vary by brand. |
| Big crunch salad (300 g cucumber + herbs) | ~10–11 | Great base when you need volume with low carbs. |
| Sandwich add-on (5–6 slices) | ~1.5–2 | Fresh bite for near-zero carb cost on the plate. |
| Sushi side plate (1 cup cucumber, sesame, light soy) | ~5–6 | Soy sauce adds trace carbs; watch sugar in dressings or glazes. |
How To Keep Cucumber Dishes Low In Carbs
Pick A Dressing That Works
- Go for extra-virgin olive oil + vinegar or lemon. Carb impact stays minimal.
- If you like creamy bottles, choose “no sugar added” lines and check grams per 2 Tbsp.
- Skip honey-mustard, sweet balsamic glazes, or any “sweet” styles when carbs matter.
Load Flavor, Not Sugar
- Fresh herbs (dill, mint, chives), garlic, and cracked pepper boost taste without carbs.
- Add acid: rice vinegar for gentle tang, red wine vinegar for bold salads.
- Use toasted seeds or nuts for crunch; measure them for calorie awareness, not carbs.
Smart Pairings For Balance
Pair cucumbers with protein and a slow-carb side if you want steady energy. Grilled chicken with a cucumber-tomato salad and a half-cup of beans gives fiber and protein with a measured carb load. For light plates, pair cucumbers with eggs or canned fish and a drizzle of olive oil.
Quick Answers To Popular “How Much” Checks
How Many Carbs Are In 1 Cup Of Cucumber?
About ~3.8 g total carbs, ~3.3 g net, when sliced with peel.
How Many Carbs Are In ½ Cup Of Cucumber?
About ~1.9 g total carbs, ~1.6 g net.
How Many Carbs Are In A Medium Cucumber?
Roughly ~7.3 g total carbs, ~6.3 g net, assuming ~200 g weight with peel.
When Carbohydrates In A Cucumber Matter Most
For low-carb programs, cucumbers are an easy “yes.” For athletes, they’re a crisp side that won’t crowd pre-training carb goals. For diabetes meal plans, the small carb load and good water content make cucumbers a steady pick in salads, snacks, and bowls. Always match portions and dressings to your targets and your clinician’s advice.
Label Tips For Pickles And Dressings
Scan two lines on the label: “Total Carbohydrate” and “Added Sugars.” U.S. labels list added sugars directly. Daily Value for added sugars uses 50 g per day on a 2,000-calorie label basis; many people aim for less. The FDA’s page on added sugars shows examples and limits used on packaging. For raw produce numbers and conversions by weight and household measures, search the exact item in FoodData Central.
Practical Takeaways
- Per 100 g: ~3.6 g carbs. Per 1 cup sliced: ~3.8 g.
- One medium cucumber (~200 g) is still under ~8 g carbs.
- Dill pickles stay low; sweet pickles add sugar.
- Dressings decide the swing. Pick oil-and-vinegar or unsweetened creamy styles.
- For net-carb planning, subtract ~0.5 g fiber per 100 g of raw cucumber with peel.
Carbohydrates In A Cucumber For Meal Planning
Use cucumbers to add texture and volume while guarding carbs for foods you’d rather “spend” them on—like fruit, yogurt, oats, beans, or whole-grain sides. That trade keeps plates satisfying without overshooting totals. Track your own common servings once, save those numbers, and you’ll be able to build plates on autopilot.
References for figures in this article include widely used nutrient databases such as USDA FoodData Central entries for raw cucumber and federal guidance on added sugars and labels.