Firm Tofu Nutrition Facts

FoodData Central Updated 30 March 2026

Firm Tofu contains 181.4 calories, 21.8g protein, 3.5g carbs, and 11g fat. Firm tofu set with calcium sulfate, which leaves it richer in calcium than the nigari-set kind.

181.4

cal

3.5g

carbs

21.8g

protein

amino acids ↓

11g

fat

2.9g

fiber

sugar

Vitamins in Firm Tofu

Per 1/2 cup ~126g

Vitamin C
0.25mg
<1%
Vitamin B6
0.12mg
7%
Thiamin (B1)
0.2mg
17%
Niacin (B3)
0.48mg
3%
Folate
36.5mcg
9%

Minerals in Firm Tofu

Per 1/2 cup ~126g

Calcium
861mg
66%
Iron
3.35mg
19%
Magnesium
73.1mg
17%
Phosphorus
239mg
19%
Potassium
299mg
6%
Sodium
17.6mg
<1%
Zinc
1.98mg
18%
Selenium
21.9mcg
40%
Copper
0.48mg
53%
Manganese
1.49mg
65%

Amino Acids in Firm Tofu

Protein breakdown per 1/2 cup (126g), from the USDA record for this food.

Incomplete protein

Limiting amino acid: Methionine + Cystine — 71% of the FAO/WHO adult reference pattern per gram of protein.

Essential Amino Acids Per 1/2 cup (126g) Per 100g % of Protein
Histidine 543mg 431mg 2.5%
Isoleucine 1070mg 849mg 4.9%
Leucine 1754mg 1392mg 8.1%
Lysine 1113mg 883mg 5.1%
Methionine 266mg 211mg 1.2%
Phenylalanine 1052mg 835mg 4.8%
Threonine 989mg 785mg 4.5%
Tryptophan 296mg 235mg 1.4%
Valine 1096mg 870mg 5%
Other Amino Acids Per 1/2 cup (126g) Per 100g % of Protein
Alanine 974mg 773mg 4.5%
Arginine 1725mg 1369mg 7.9%
Aspartic Acid 2565mg 2036mg 11.8%
Cystine 72mg 57mg 0.3%
Glutamic Acid 4143mg 3288mg 19%
Glycine 924mg 733mg 4.2%
Proline 1366mg 1084mg 6.3%
Serine 1279mg 1015mg 5.9%
Tyrosine 883mg 701mg 4.1%

Protein quality is scored against the FAO/WHO/UNU 2007 adult indispensable amino acid reference pattern. The FDA publishes no Daily Values for individual amino acids, so the share of total protein is shown instead.

Learn More About Firm Tofu

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Verified Nutrition Data

Trusted & Verified Nutritional Information

All nutritional data on Food Index is sourced from official U.S. government databases and verified by nutrition experts at leading federal agencies.

USDA Official Source
FDA Safety Standards
HHS Health Standards
NIH Research Verified

Laboratory Analyzed

Nutrient values from certified lab analysis

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Data reviewed by nutrition scientists

Regularly Updated

Synced with latest official database releases

Nutritional values are based on standard reference data and may vary slightly based on preparation methods, brands, and natural variation in foods. Always consult with a healthcare professional for personalized dietary advice.