Mushrooms are a low-calorie, nutrient-dense food, but their sugar content varies widely by variety and preparation. This calculator helps you estimate the total sugar in your mushroom serving, whether you're tracking carbs for diabetes, following a low-sugar diet, or simply curious about your daily intake.
Simply enter the amount of mushrooms you plan to eat, select the variety and preparation method, and the tool will compute the sugar content based on standard USDA nutrition data. You'll also see the sugar per 100g and per serving, plus a quick comparison to common foods.
Perfect for meal planning, keto or low-carb tracking, and anyone who wants precise nutrition numbers without guesswork.
🍄 Mushroom Sugar Calculator
How to Use This Tool
Enter the amount of mushrooms you plan to eat, choose the unit (grams, ounces, or cups of chopped mushrooms), select the variety, and pick the preparation method. The calculator uses standard USDA nutrition data to estimate the total sugar content. For example, if you're making a stir-fry with 150 g of shiitake mushrooms, select "shiitake" and "raw" (or "cooked" if you boil them first) to get an accurate estimate.
The result shows the total sugar in your serving, the sugar per 100 g, and a quick comparison in teaspoons of sugar. This helps you put the number in perspective — a typical serving of mushrooms contains far less sugar than a piece of fruit or a sugary drink.
How It Works
The calculator multiplies the weight of your mushrooms (converted to grams) by the sugar content per 100 g for the selected variety. Sugar values are based on the USDA FoodData Central database. For example, raw white mushrooms contain about 2.2 g of sugar per 100 g, while enoki mushrooms contain only about 0.2 g per 100 g. Cooking methods like boiling or sautéing do not significantly change the sugar content because sugars are water-soluble but not lost in typical cooking times; the main change is water content, which affects weight but not the sugar per 100 g of dry matter.
For cups, we use an average of 70 g of chopped mushrooms per cup. This is an approximation — actual weight can vary by how finely you chop and how tightly you pack the cup. For the most accurate results, weigh your mushrooms on a kitchen scale.
Worked Examples
Example 1: You eat 1 cup of chopped white mushrooms (raw). 1 cup ≈ 70 g. Sugar per 100 g = 2.2 g. Total sugar = (70/100) × 2.2 = 1.54 g. That's about 0.4 teaspoons of sugar.
Example 2: You sauté 200 g of portobello mushrooms. Sugar per 100 g = 2.5 g. Total sugar = (200/100) × 2.5 = 5.0 g. That's about 1.25 teaspoons — still quite low compared to a can of soda (about 39 g).
Tips & Best Practices
- Weigh mushrooms raw before cooking for the most accurate sugar estimate, as cooking removes water and concentrates nutrients by weight.
- If you're tracking net carbs, remember that sugar is a subset of total carbohydrates. Mushrooms also contain fiber, which is not digested.
- For keto or low-carb diets, mushrooms are an excellent choice — even a large 200 g serving of white mushrooms has only about 4.4 g of sugar.
- Different varieties have different sugar profiles. Shiitake and portobello are slightly higher, while enoki and morels are very low.
Factors Affecting Accuracy
The sugar values are averages from USDA data and can vary by growing conditions, maturity, and storage. The cup-to-gram conversion is an estimate; using a kitchen scale will improve accuracy. Cooking methods that involve added sugar (e.g., glazing with honey or teriyaki sauce) will add sugar beyond what this calculator estimates. Always check the nutrition label of any added sauces or marinades.
Frequently Asked Questions
Are mushrooms high in sugar?
No. Most mushrooms contain less than 3 g of sugar per 100 g, making them a very low-sugar food. For comparison, an apple has about 10 g per 100 g, and a banana about 12 g.
Do cooked mushrooms have more sugar?
Not in terms of sugar per 100 g of dry matter. Cooking removes water, so the same weight of cooked mushrooms represents more mushroom solids, but the sugar content per 100 g of the cooked product is similar to raw. This calculator assumes no added sugar.
Can I use this for dried mushrooms?
This calculator is designed for fresh mushrooms. Dried mushrooms have concentrated sugar per gram, so the values would be higher. If you rehydrate them, the sugar per 100 g of rehydrated product is closer to fresh.
How does mushroom sugar affect blood sugar?
Mushrooms have a low glycemic index and are unlikely to cause significant blood sugar spikes. The small amount of sugar is accompanied by fiber and other nutrients.
Additional Resources
For more detailed nutrition data, visit the USDA FoodData Central. You can also explore our mushroom calorie calculator for calorie estimates, or the fruit sugar calculator to compare with other foods.