Cratox AI
Reviewed by Cratox Nutrition Team · Updated August 13, 2026

Tofu, raw, firm vs Tofu, hard, prepared with nigari: nutrition compared

Nutrient (per 100 g)Tofu, raw, firmTofu, hard, prepared with nigari
Calories144 kcal145 kcal
Protein17.3 g12.7 g
Carbohydrates2.8 g4.4 g
Fat8.7 g10 g
Fibre2.3 g0.6 g
Sodium14 mg2 mg

All values per 100 g. Source: USDA FoodData Central.

tofu raw firm
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Tofu, raw, firm

🔥 144 Calories
💪 17.3g Protein
2.8g Carbohydrates
🥑 8.7g Fat

Tofu, raw, firm provides 144 kcal per 100 g, with 17.3 g of protein, 2.8 g of carbohydrates and 8.7 g of fat. 0.5 cups of Tofu, raw, firm (126 g) provides about 181 kcal.

At a glance

A fast summary built from the current nutrition profile per 100g.

Category
Miscellaneous
Tofu, raw, firm
Energy density
Moderate
144 kcal per 100g
Macro energy profile
Balanced
44% Protein · 7% Carbohydrates · 49% Fat
Glycemic profile
Low GI
GI 15 · GL 0.4
Notable signals
Very high in calciumHigh in proteinLow in sugarLow in sodiumUSDA data

Nutritional Information

144
kcal/100g
Protein
17.3g
Carbohydrates
2.8g
Fat
8.7g
Glycemic Index:
15

Nutritional Information (per 100g)

NutrientAmount per 100 g
Calories144 kcal
Protein17.3 g
Carbohydrates2.8 g
Fat8.7 g
Fiber2.3 g
Sodium14 mg

USDA data · USDA FoodData Central

Calories per portion

PortionWeightCalories
0.5 cups126 g181 kcal
0.25 block81 g117 kcal
100 g100 g144 kcal

Portion weights: USDA FoodData Central

Portion calculator

Calories
144 kcal
Protein
17.3 g
Carbohydrates
2.8 g
Fat
8.7 g
Fiber
2.3 g
Sodium
14 mg

All values are computed from the per-100 g nutrition data (source: USDA).

About Tofu, raw, firm

Tofu, also known as bean curd, is a soy-based food that originated in ancient China over 2,000 years ago. It is made by coagulating soy milk and pressing the resulting curds into solid blocks. Tofu has become a staple in various cuisines around the world, particularly in East Asian dishes. Its versatility allows it to be used in both savory and sweet recipes, making it a popular choice among vegetarians and vegans as a meat substitute.

Nutritionally, firm tofu is an excellent source of protein, containing approximately 17.3 grams per 100 grams, making it an ideal choice for muscle building and repair. It is low in carbohydrates and contains healthy fats, primarily unsaturated fats. Additionally, tofu is rich in essential minerals such as iron and calcium, and it provides a small amount of fiber. Its subtle flavor allows it to absorb spices and marinades well, enhancing the taste of various dishes, from stir-fries to salads.

Health Benefits

Supports muscle growth and repair due to high protein content.
Rich in iron, which helps in oxygen transport in the body.
Contains calcium, promoting strong bones and teeth.
May help reduce the risk of heart disease due to low saturated fat.
Aids in weight management as a low-calorie food option.
Contains antioxidants that can combat free radicals.
May support hormonal balance due to phytoestrogens.
Can improve digestive health due to a small amount of fiber.
Supports healthy skin due to its vitamin content.
May lower the risk of certain cancers due to its isoflavones.

Recommended Food Pairings

🥗
Tofu and broccoli - the protein in tofu complements the vitamins and minerals in broccoli, enhancing overall nutritional value.
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Tofu and quinoa - both are excellent protein sources, making this combination ideal for a balanced meal.
🥗
Tofu and bell peppers - the vibrant flavors of bell peppers add a sweet crunch that pairs well with tofu's texture.
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Tofu and sesame oil - sesame oil adds a rich flavor to tofu dishes, enhancing taste and providing healthy fats.
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Tofu and spinach - the iron in tofu and spinach work together, improving iron absorption.

How to Consume

Serving size
150g, approximately 1 cup
Frequency
2-3 times per week
  • Marinate tofu before grilling or baking to enhance flavor.
  • Cube tofu and add it to stir-fries or salads for added protein.
  • Blend silken tofu into smoothies for a creamy texture.
  • Use firm tofu in soups and stews for a hearty meal.
  • Bake tofu with spices for a crunchy snack.

Selection & Storage

How to choose:

  • Select tofu that is firm and has a smooth texture, indicating freshness.
  • Check the expiration date on the packaging to ensure quality.
  • Look for tofu that is stored in water, as this helps maintain moisture.
  • Choose organic tofu to avoid genetically modified soybeans.
Storage
Store tofu in the refrigerator at a temperature below 40°F (4°C). Keep it submerged in water and change the water daily to maintain freshness.
Shelf life
5-7 days refrigerated when opened, 3 months if frozen.

Warnings & Contraindications

  • ⚠️Individuals with soy allergies should avoid tofu.
  • ⚠️Those on certain medications should consult a healthcare provider due to potential interactions.
  • ⚠️Excessive consumption may lead to digestive discomfort due to high fiber content.
  • ⚠️Cooking tofu improperly may lead to a bland taste; proper seasoning is essential.

Frequently Asked Questions

How many calories does Tofu, raw, firm have?

Tofu, raw, firm contains approximately 144 calories per 100 grams, making it a low-calorie protein source ideal for various diets.

Is Tofu, raw, firm healthy?

Yes, Tofu, raw, firm is considered healthy due to its high protein content, low saturated fat, and beneficial nutrients such as calcium and iron, making it an excellent choice for vegetarians and those looking to reduce meat consumption.

How should Tofu, raw, firm be stored?

Tofu should be stored in the refrigerator in its original packaging or submerged in water to maintain freshness. Change the water daily and consume it within 5-7 days after opening.

What are the benefits of eating Tofu, raw, firm?

Eating Tofu, raw, firm provides numerous health benefits, including being a great protein source, supporting bone health due to its calcium content, and potentially reducing the risk of heart disease and certain cancers.

How much Tofu, raw, firm can I eat per day?

A recommended daily serving of Tofu, raw, firm is about 150 grams, which can be consumed 2-3 times per week as part of a balanced diet.

How many calories are in 0.5 cups of Tofu, raw, firm (126 g)?

0.5 cups of Tofu, raw, firm (126 g) has about 181 kcal — 21.8 g protein, 3.5 g carbohydrates and 11 g fat (calculated from the USDA values per 100 g).

How many calories are in 0.25 block of Tofu, raw, firm (81 g)?

0.25 block of Tofu, raw, firm (81 g) has about 117 kcal — 14 g protein, 2.3 g carbohydrates and 7 g fat (calculated from the USDA values per 100 g).

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