Turnips are a crisp, slightly peppery root vegetable that fits beautifully into low-carb and keto meal plans. But if you're tracking macros, you need precise numbers — not just a rough guess. This calculator gives you the exact carbohydrate content of turnips per 100 grams, with options to adjust for serving size, preparation method, and whether you're counting total carbs or net carbs.
Whether you're meal prepping, following a diabetic-friendly diet, or simply curious about the nutritional profile of this humble vegetable, this tool does the math for you. It accounts for the difference between raw and cooked turnips, lets you enter your own portion weight, and even shows the fiber and sugar breakdown so you can make informed decisions. No more squinting at nutrition labels or doing mental arithmetic — just enter your details and get instant, accurate results.
🥬 Turnip Carb Calculator
📊 Results
How to Use This Tool
Using the turnip carb calculator is straightforward. Start by entering the weight of your turnips in grams, ounces, or cups. If you're using a kitchen scale, grams are the most accurate. For a quick estimate, you can use the preset buttons for 100 g, 150 g, 200 g, or 1 cup of chopped turnip. Next, select how your turnips are prepared — raw, boiled, or roasted — because cooking affects the carbohydrate concentration. Finally, choose whether you want total carbs or net carbs. Net carbs are calculated by subtracting fiber from total carbs, which is a common approach for low-carb and keto diets. Click "Calculate" and you'll see the carb content for your specific portion, along with a breakdown of fiber and sugar.
How It Works
The calculator uses standard USDA nutritional data for turnips. For raw turnips, the carbohydrate content is approximately 6.43 g per 100 g. Boiling reduces this slightly to about 5.06 g per 100 g because some carbohydrates leach into the cooking water. Roasting, which removes moisture, concentrates the carbs to roughly 7.0 g per 100 g. The fiber content also varies: raw turnips have about 1.8 g per 100 g, boiled about 2.0 g, and roasted about 2.2 g. Sugar content follows a similar pattern. The calculator converts your input weight to grams, then applies the appropriate per-100g values to compute the totals. For net carbs, it subtracts the fiber from the total carbohydrate. This method is consistent with how many nutrition tracking apps calculate net carbs.
Worked Examples
Example 1: You have 150 g of raw turnip. Total carbs = (6.43 / 100) × 150 = 9.65 g. Fiber = (1.8 / 100) × 150 = 2.7 g. Net carbs = 9.65 − 2.7 = 6.95 g.
Example 2: You have 1 cup of boiled turnip (about 130 g). Total carbs = (5.06 / 100) × 130 = 6.58 g. Fiber = (2.0 / 100) × 130 = 2.6 g. Net carbs = 6.58 − 2.6 = 3.98 g.
Example 3: You have 200 g of roasted turnip. Total carbs = (7.0 / 100) × 200 = 14.0 g. Fiber = (2.2 / 100) × 200 = 4.4 g. Net carbs = 14.0 − 4.4 = 9.6 g.
Tips & Best Practices
- Weigh turnips raw before cooking for the most accurate carb count, as water loss during cooking changes the weight.
- If you're following a keto diet, remember that net carbs are what matter most. Turnips are relatively low in net carbs compared to potatoes, making them a great substitute.
- For meal prep, calculate the carbs for the entire batch and then divide by the number of servings to get per-serving values.
- Use the quick-fill buttons to quickly estimate common portion sizes without a scale.
Factors Affecting Accuracy
The values used in this calculator are averages from the USDA FoodData Central database. Actual carb content can vary based on the variety of turnip, growing conditions, and cooking method. Boiling in a large amount of water may leach more carbs, while roasting with oil adds fat but doesn't significantly change carbs. For medical or strict dietary purposes, always refer to the nutrition label on the specific product you're using. This tool is for educational and general planning purposes and should not replace professional dietary advice.
Frequently Asked Questions
Are turnips keto-friendly?
Yes, turnips are considered keto-friendly because they are low in net carbs. A 100 g serving of raw turnip has about 4.6 g of net carbs, which fits well into a standard 20-50 g daily net carb limit.
What is the difference between total carbs and net carbs?
Total carbs include all carbohydrates, including fiber. Net carbs are calculated by subtracting fiber from total carbs, because fiber is not digested and does not raise blood sugar. Many low-carb diets focus on net carbs.
Can I use this calculator for other root vegetables?
No, this calculator is specifically calibrated for turnips. Other vegetables like potatoes, carrots, and parsnips have different carb profiles. You can find dedicated calculators for those on this site.
How many carbs are in a whole turnip?
A medium turnip (about 122 g) contains roughly 7.8 g of total carbs and 5.6 g of net carbs when raw. Use the calculator with the weight of your specific turnip for a precise number.
Additional Resources
For more detailed nutritional information, you can refer to the USDA FoodData Central database, which provides comprehensive data on thousands of foods. If you're interested in comparing turnips to other vegetables, check out our potato carb calculator or our parsnip net carb calculator.