Kale is a nutritional powerhouse with a remarkably low sugar profile — a 100 g serving of raw kale contains less than 1 g of sugar. Whether you are meal-prepping a green smoothie, following a low-carb diet, or simply trying to understand food labels, the Kale Sugar Per 100g Calculator gives you the sugar content for any amount of kale in seconds.
Use the tool in two ways: pick a standard kale form (raw, cooked, or frozen) and enter your portion in grams, ounces, cups, or handfuls; or switch to label mode and enter the exact sugar value from a packaged kale product. The calculator immediately shows total sugar, sugar per 100 g, and a teaspoon equivalent — helping you make informed choices without guesswork.
This calculator is ideal for nutrition enthusiasts, dietitians, and anyone tracking sugars in a balanced diet. With built-in reference values from USDA FoodData Central, the results are practical for daily meal planning and for comparing kale with other vegetables.
📊 Results
Estimates are based on total sugars. For seasoned or sauced kale, add any sweetener separately.
How to Use This Tool
Start by selecting the kale form that matches what you are actually eating — raw, cooked (boiled and drained), or frozen. Next, enter the amount you plan to use. You can type a precise weight in grams or ounces, or estimate a volume in chopped cups or handfuls if you are working from a recipe. Choose the sugar source: the standard USDA value for the selected kale form, or a custom value from a nutrition label if you are using a packaged product such as a kale blend, a seasoned bag, or a smoothie mix.
Click Calculate Sugar to see the total sugar in your portion, the sugar per 100 g, and the teaspoon equivalent. The breakdown panel shows each step of the math so you can follow along. Use the Reset button to clear everything and start a new calculation.
Worked Examples
Example 1 — Raw kale by the cup. A 2-cup serving of raw chopped kale weighs about 134 g. With the raw kale standard of 0.99 g sugar per 100 g, the total sugar is 0.99 × 134 ÷ 100 ≈ 1.33 g — roughly 0.32 teaspoons, well under half a teaspoon for a generous salad bowl.
Example 2 — Cooked kale from a recipe. A recipe calls for 250 g of boiled, drained kale. Using the cooked value of 0.53 g per 100 g, the calculation is 0.53 × 250 ÷ 100 = 1.33 g of sugar. Even a large cooked portion stays under 1.5 g.
Example 3 — Label mode with a packaged blend. A 170 g bag of kale and spinach blend lists 2 g of total sugars for the whole bag. In label mode, enter 170 g as the amount and 2 g as the label sugar. The tool computes sugar per 100 g as 2 ÷ 170 × 100 ≈ 1.18 g, with a teaspoon equivalent of about 0.48 tsp.
Formula Explained
All calculations are simple proportions. In standard mode, the tool multiplies the sugar density of the selected kale form by the weight of your portion:
Total sugar = (sugar per 100 g ÷ 100) × kale weight in grams
The sugar per 100 g comes directly from the reference value or your custom entry. In label mode the formula is reversed:
Sugar per 100 g = total sugar ÷ kale weight × 100
The teaspoon equivalent uses the nutrition convention that one level teaspoon of granulated sugar weighs about 4.2 g, so teaspoons = total sugar ÷ 4.2. This is a useful shortcut when comparing kale's sugar load with the WHO guideline of keeping added sugars below roughly 25–50 g per day — kale contributes only a tiny fraction of that.
Reference Data
Reference values are drawn from USDA FoodData Central entries: raw kale at 0.99 g total sugars per 100 g, boiled kale drained at 0.53 g per 100 g, and frozen kale unprepared at 1.00 g per 100 g. Cup weights assume chopped raw kale at about 67 g per cup and cooked kale at about 65 g per cup; a handful is estimated at 30 g.
| Kale form | Sugar per 100 g | Per 1 cup chopped | Per 1 handful |
|---|---|---|---|
| Raw kale | 0.99 g | 0.66 g | 0.30 g |
| Cooked kale (boiled, drained) | 0.53 g | 0.34 g | 0.16 g |
| Frozen kale (unprepared) | 1.00 g | 0.67 g | 0.30 g |
Tips & Best Practices
- Weigh kale raw unless a recipe clearly specifies cooked volume, because cooking removes water and changes how much fits in a cup.
- Massaged or sautéed kale is still extremely low in sugar — the real risk comes from added honey, maple syrup, agave, or sweet dressings.
- Flavored kale chips and packaged smoothie kits often contain added sugar or fruit concentrates; use label mode and enter the total sugar listed on the package.
- Kale's sugar is naturally occurring, not added sugar, so it does not count against your daily added-sugar limit.
- If you track carbohydrates, note that total sugar is a subset of total carbs — kale's high fiber content is why it fits so well into low-carb eating plans.
Factors Affecting Accuracy
USDA values are averages from lab-tested samples, so individual crops vary slightly with variety, growing conditions, and harvest time; baby kale and mature kale can also differ. Volume estimates for cups and handfuls are approximate because chopped leaf density depends on how finely you chop and how firmly you pack the cup. For the most accurate result, weigh your kale in grams and use the standard value for the form you are eating. For packaged products, the nutrition label is the most accurate figure for that specific batch — the FDA requires labels to list total sugars in grams with defined tolerance limits.
Frequently Asked Questions
Is kale a low-sugar vegetable? Yes. At under 1 g per 100 g, kale ranks among the lowest-sugar leafy greens, comparable to spinach and Swiss chard, and far below carrots (about 4.7 g per 100 g) or bell peppers (about 2.4 g per 100 g).
Does cooking change the sugar content? Cooking does not create or destroy sugar, but it removes water, so a 100 g cooked portion contains more leaf matter and therefore a different sugar density. The USDA reports boiled, drained kale at 0.53 g per 100 g.
Why show a teaspoon equivalent? Most people can picture a teaspoon of sugar, and since one teaspoon weighs about 4.2 g, the comparison makes kale's small sugar load easy to communicate to clients or family members.
Can I use custom mode for other greens? Absolutely. Enter any sugar value per 100 g — for example, spinach at about 0.4 g, collards at about 0.4 g, or a store-bought mix — and the calculator handles the portion math.
Additional Resources
For complete nutrient profiles, search the USDA FoodData Central database. Serving-size guidance is available from USDA MyPlate, and the WHO healthy diet fact sheet explains global guidance on sugars.