Turnips are one of the lowest-calorie root vegetables, making them a popular swap for potatoes in low-carb, weight-loss, and clean-eating meal plans. But calorie counts for a slice of turnip are rarely listed on nutrition labels, and slice size varies wildly depending on how thick you cut.
This calculator converts your slice count and slice thickness into accurate calories, carbs, protein, fat, and fiber using USDA data for raw turnips. Pick a thin, medium, or thick slice preset, or enter the exact grams per slice from your food scale. It is ideal for calorie counters, meal-preppers, dietitians, and anyone who wants to enjoy crunchy turnip snacks without guessing.
Great for salads, roasted sides, and low-carb snack plates.
🥕 Turnip Slice Calculator
Estimate calories and macros for raw turnip slices.
How to Use This Tool
Turnips are often sold by the bunch, but recipes and meal-prep notes usually talk about slices rather than grams. This calculator bridges that gap. Start by choosing a slice thickness — thin, medium, thick — or switch to custom and enter the exact grams per slice if you have a food scale. Then enter how many slices you plan to eat. Press Calculate and the tool returns total calories, calories per slice, and the carbohydrate, protein, fat, and fiber totals for the whole portion.
The default medium value assumes a 20 g slice from a raw turnip cut about 1/4-inch thick. If your knife skills tend toward thin shavings or thick chunks, use the custom option. You can also use the preset slice-count buttons to quickly set 1, 3, 5, or 10 slices.
Calorie & Nutrition Reference
The values in this tool are based on raw turnip data from USDA FoodData Central. A 100 g serving of raw turnip contains about 28 calories, 6.4 g carbohydrates, 0.9 g protein, 0.1 g fat, and 1.8 g fiber. The table below shows how those values break down for typical slice sizes.
| Portion | Weight | Calories | Carbs | Protein | Fat | Fiber |
|---|---|---|---|---|---|---|
| 100 g raw turnip | 100 g | 28 kcal | 6.4 g | 0.9 g | 0.1 g | 1.8 g |
| Thin slice | ≈10 g | 2.8 kcal | 0.6 g | 0.1 g | 0.0 g | 0.2 g |
| Medium slice | ≈20 g | 5.6 kcal | 1.3 g | 0.2 g | 0.0 g | 0.4 g |
| Thick slice | ≈35 g | 9.8 kcal | 2.3 g | 0.3 g | 0.0 g | 0.6 g |
Nutrient values are rounded to one decimal place. If you are tracking closely, use the custom weight option and your own scale for best results.
How the Calculation Works
This calculator uses a simple proportional method. First, it finds the total weight of all your slices by multiplying the number of slices by the grams per slice. Then it divides that total by 100 to get a factor that represents how many 100 g portions you have. Finally, it multiplies each nutrient value per 100 g by that factor.
For example, 5 medium slices at 20 g each give a total weight of 100 g, so the factor is exactly 1. That means the totals are simply the per-100 g values: 28 kcal, 6.4 g carbs, 0.9 g protein, 0.1 g fat, and 1.8 g fiber. The calories-per-slice value is then the total calories divided by the number of slices.
Worked Examples
Example 1: Snack plate — You slice 6 medium slices (20 g each). Total weight = 120 g, factor = 1.2. Total calories = 28 × 1.2 = 33.6 kcal. Carbs = 7.7 g, protein = 1.1 g, fat = 0.1 g, fiber = 2.2 g. Per slice = 5.6 kcal.
Example 2: Roasted turnip portion — You plan 8 thick slices at 35 g each. Total weight = 280 g, factor = 2.8. Total calories = 78.4 kcal. Carbs = 18.0 g, protein = 2.5 g, fat = 0.3 g, fiber = 5.0 g. Per slice = 9.8 kcal.
These examples assume raw, plain turnips. If you roast or sauté them with oil, the added fat will increase the calorie count beyond what this tool shows.
Tips for Accurate Portioning
- Weigh raw turnip slices before cooking whenever possible, since moisture loss during cooking concentrates calories.
- Use a mandoline or a sharp chef's knife to keep slices uniform; this makes manual counting more reliable.
- For mixed salads, count slices individually, but remember that julienned or shredded turnip may pack differently into a measuring cup.
- If you use a food scale, the custom weight option is the most accurate. Weigh one slice, or weigh all slices and divide by the number.
- Remember that turnip greens are separate and have different nutrition values — do not mix them with root slices.
Frequently Asked Questions
Are cooked turnips higher in calories? Plain boiling or steaming does not add calories, but it changes weight because turnips absorb water. For the same raw weight, the calories remain essentially the same; roasted turnips with oil will add the oil's calories. This tool is designed for raw slices.
How many slices are in one medium turnip? A medium turnip weighs roughly 120–150 g. Using 20 g slices, that works out to about 6–7 medium slices. The exact number depends on the shape of the root and where you start cutting.
Why does my nutrition app show different numbers? Different databases may list raw turnip as 26–30 kcal per 100 g depending on the specific variety, growing conditions, and sourcing. USDA data is a reliable standard; if your app uses a different source, small differences are normal.
Can I use this calculator for other root vegetables? No — the per-100 g values are specific to raw turnips. For another root vegetable, check its own nutrition panel or use a dedicated calculator. If you count other sliced vegetables by portion, the artichoke slice calculator uses a similar approach. For broader daily calorie planning, see women's nutrition target calculator.
Is turnip good for low-carb diets? Turnips are relatively low in net carbs for a root vegetable. A 100 g serving has 6.4 g total carbs and 1.8 g fiber, leaving about 4.6 g net carbs — but portions should still be accounted for in your daily target.