Tofu Nutrition Facts
Complete tofu nutrition breakdown with 76 kcal per 100g, glycemic index, and diet compatibility.
Written by Victura Nutrition TeamReviewed by Victura Editorial ReviewLast updated Aug 16, 2026
76
Calories
8.1g
Protein
1.9g
Carbs
Generally yes
Is it healthy?
per 100g · per panel values
Track this food in VicturaQuick answer
A 3-ounce serving of tofu contains around 65 calories, while 100g contains about 76 calories. Per 100g you get about 1.87g carbs and 8.08g protein. Glycemic index is around 15.
Tofu is a whole food with approximately 76 calories per 100g, tracked in Victura for macro-aware meal logging.
- Calories (3-ounce serving)
- 65 kcal
- Calories (100g)
- 76 kcal
- Carbs (100g)
- 1.87g
- Protein (100g)
- 8.08g
- Serving reference
- 85g · 3-ounce serving
- Glycemic index
- 15
Serving calculator
How much did you eat or drink — Tofu?
76
Calories
8.1g
Protein
1.9g
Carbs
4.8g
Fat
Nutrition facts
per 100g · Source: USDA FoodData Central (seeded Phase 0)
76 kcal
Calories
Minerals
- Calcium: 350mg
Scientific explanation
Research-backedTofu provides a highly efficient, plant-based protein source that is low in carbohydrates and rich in essential minerals. According to USDA FoodData Central reference data, a standard 100-gram serving of raw, regular tofu prepared with calcium sulfate delivers 76 calories (kcal), 8.08 grams of high-quality protein, 4.78 grams of fat, and 1.87 grams of total carbohydrates. Of these carbohydrates, 0.3 grams come from dietary fiber, leaving a net carbohydrate count of approximately 1.57 grams. This extremely low carbohydrate profile makes tofu highly compatible with ketogenic and low-carb dietary protocols. The protein in tofu is considered complete, meaning it contains all nine essential amino acids that the human body cannot synthesize on its own. This makes it an invaluable staple for vegetarian and vegan diets. The lipid profile of tofu consists primarily of unsaturated fatty acids, which are widely recognized for supporting cardiovascular health by helping to maintain optimal cholesterol levels. One of the standout micronutrient features of tofu prepared with calcium sulfate is its exceptional calcium content. A 100-gram serving provides 350 milligrams of calcium, which represents approximately 27% of the daily recommended value. This bioavailable calcium is crucial for maintaining bone density, supporting muscular contractions, and facilitating nerve transmission. From a glycemic perspective, tofu has an estimated glycemic index (GI) of 15, placing it firmly in the low-GI category. Because it contains only 0.62 grams of sugar per 100 grams and is rich in protein and fats, it has a negligible impact on blood glucose levels. This makes it an excellent dietary choice for individuals managing type 2 diabetes or insulin resistance, as it provides sustained energy without triggering rapid insulin spikes. The synergy of low glycemic impact, high protein density, and essential minerals positions tofu as a foundational food for metabolic health and tissue repair.
Community insights
Community insightAmong Victura meal logs, tofu appears frequently as a versatile, high-protein ingredient favored by both plant-based athletes and individuals pursuing fat-loss goals. Users frequently log tofu in diverse culinary applications, ranging from savory breakfast scrambles and air-fried cubes to silken tofu blended into protein smoothies. Analysis of community feedback reveals that pairing tofu with high-fiber vegetables and healthy fats, such as avocado or sesame oil, yields the highest satiety ratings. Many users report that incorporating tofu into their evening meals helps prevent late-night cravings, likely due to its slow-digesting protein structure. In contrast to animal proteins, users appreciate that tofu does not cause a heavy, sluggish feeling post-consumption, making it a popular choice for midday lunches. Furthermore, fitness-focused members of the Victura community frequently utilize tofu as a post-workout recovery food. By combining its complete amino acid profile with a complex carbohydrate source like brown rice or quinoa, they optimize muscle protein synthesis and glycogen replenishment. The neutral flavor profile of tofu is also highly praised, as it readily absorbs marinades and spices, allowing for endless dietary variety without flavor fatigue.
Pros
- Tofu is a whole food with measurable macro nutrients
- Excellent source of highly bioavailable calcium when prepared with calcium sulfate
- Complete plant-based protein containing all nine essential amino acids
Cons
- Portion size still matters for calorie goals
- Raw tofu requires proper pressing and seasoning to maximize flavor appeal
Best time to eat
Pair with complex carbohydrates and fiber for balanced, long-lasting energy.
Good windows
- Post-workout recovery
- With main meals
Consider avoiding
- Deep-fried preparations late at night
Diet compatibility
Weight loss
Friendly
At 76 kcal and 8.08g protein per 100g, this food is highly satiating and low in energy density.
Keto
Friendly
Net carbs ~1.57g per 100g - compatible with strict keto.
Diabetic friendly
Friendly
GI 15 with 0.62g sugar - generally blood-sugar friendly in moderation.
Frequently asked questions
People also ask
Is tofu healthy?
Yes — tofu is a whole food with measurable nutrients. Healthiness depends on overall diet, portions, and your goals. Estimated GI is 15.
Can I eat tofu every day?
Most people can include tofu daily as part of a balanced diet, as long as total calories and carbs fit their plan.
Are tofu good for weight loss?
At 76 kcal and 8.08g protein per 100g, this food is highly satiating and low in energy density.
How many calories are in tofu?
A typical medium serving of tofu has about 76 calories, while 100g contains about 76 calories (USDA reference).
Are tofu good before a workout?
Tofu can work before activity when you want easy carbs; pair tofu with protein if your session is long.
Are tofu high in sugar?
Tofu contain about 0.6g sugar per 100g — mostly natural sugars when whole.
Is tofu good for weight loss?
Yes, tofu is highly beneficial for weight loss. At just 76 calories per 100g, it is a low-calorie, high-protein food that promotes satiety and helps preserve lean muscle mass during a calorie deficit. Protein has a high thermic effect of food, meaning your body burns more calories digesting it compared to fats or carbs. To maximize weight loss results, prepare tofu using low-calorie cooking methods like baking, steaming, or air-frying rather than deep-frying.
Is tofu good before a workout?
Tofu can be an excellent pre-workout food, particularly when consumed 2 to 3 hours before exercise. Because it contains 8.08g of complete protein and 4.78g of healthy fats per 100g, it provides a sustained release of amino acids to protect muscle tissue during training. For optimal workout energy, pair tofu with an easily digestible complex carbohydrate source, such as sweet potato or brown rice, to ensure your glycogen stores are fully fueled.
Is tofu high in sugar?
No, tofu is extremely low in sugar. It contains only 0.62 grams of sugar per 100 grams, which is a negligible amount. This minimal sugar content, combined with its low net carbohydrate count of 1.57g, ensures that tofu will not cause rapid spikes in blood glucose or insulin levels. This makes it an ideal food choice for anyone on a low-sugar, ketogenic, or diabetic-friendly diet.
Is tofu keto-friendly?
Absolutely. With only 1.87g of total carbohydrates and 0.3g of fiber per 100g, tofu has a net carb count of just 1.57g. This exceptionally low carbohydrate profile makes it highly compatible with strict ketogenic diets. It allows keto practitioners to meet their protein requirements without risking ketosis disruption, especially when prepared with healthy keto-friendly fats like olive or avocado oil.
What is the glycemic index of tofu?
Tofu has an estimated glycemic index (GI) of 15, which is classified as very low. Because it contains minimal carbohydrates (1.87g per 100g) and is rich in protein and fat, it has virtually no immediate impact on blood sugar levels. This low-GI profile helps maintain stable energy levels and prevents the energy crashes often associated with high-glycemic foods.
Is tofu safe for people with diabetes?
Yes, tofu is highly recommended for individuals managing diabetes. Its low glycemic index of 15 and low sugar content (0.62g per 100g) mean it does not trigger blood glucose spikes. Furthermore, the high protein and healthy fat content in tofu help slow down the absorption of other carbohydrates consumed during the meal, promoting overall glycemic stability and improved insulin sensitivity.
How we review this guide
- Written by
- Victura Nutrition Team
- Reviewed by
- Victura Editorial Review
- Reference sources
- 4
- Last updated
- Aug 16, 2026
References
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