Reviewed September 16, 2026 · Plant-protein comparison · Brand values vary

Tempeh vs Tofu Nutrition: Protein, Calories, Fiber, Iron and B12

Tofu is soft and mild. Tempeh is firm, nutty and fermented.

Both foods can anchor a filling plant-based meal.

The better choice depends on texture, nutrients and your recipe.

Tempeh vs tofu nutrition per 100 grams

Fermentation, water content, calcium salts and added oils change these numbers.

Protein: tempeh has a small edge

Tempeh often gives about 18 to 20 grams of protein per 100 grams.

Firm tofu usually gives about 16 to 18 grams.

That difference is modest in a real meal.

Add lentils, beans or edamame for more total protein.

Protein needs depend on body size, age and activity.

Fiber: tempeh usually wins

Tempeh keeps more of the soybean structure.

That structure often produces more fiber.

Tofu is pressed into a smooth block, so fiber can be lower.

Fiber supports fullness and normal digestion.

Increase portions slowly if your gut reacts to beans.

Calcium and iron

Calcium-set tofu can be an excellent calcium food.

Look for calcium sulfate in the ingredient list.

Tempeh supplies iron, but plant iron absorbs differently.

Eat tempeh with peppers, citrus or tomatoes.

Vitamin C can improve absorption of plant-based iron.

Lab tests, not one food, confirm iron status.

Does tempeh or tofu contain B12?

Plain tempeh and tofu usually contain little or no vitamin B12.

Some products add B12 during fortification.

Read the Nutrition Facts panel before counting B12.

Vegans often need fortified foods or a B12 supplement.

Ask a clinician for personal supplement advice.

Fermentation and digestion

Tempeh is fermented with a beneficial mold culture.

Fermentation changes texture, flavor and some soybean compounds.

Many people find tempeh easier to digest than whole beans.

That response is individual, not guaranteed.

Tofu remains a useful low-fiber option for sensitive eaters.

Cooking and flavor

A crispy coating can double calories without changing the food name.

Which one should you buy?

• Choose tempeh for more fiber and a hearty chew.
• Choose calcium-set tofu for a softer calcium-rich option.
• Choose extra-firm tofu for stir-fries and grilling.
• Choose plain products when you want full control.
• Choose fortified products when the label meets your nutrient goal.

Compare labels by serving size. Packages rarely use the same portion.

Safety notes

Tempeh and tofu contain soy, a major food allergen.

Refrigerate opened packs and follow the package date.

Cook tempeh and tofu with clean utensils.

People with thyroid medicine questions should ask their clinician.

What are tempeh and tofu?

Tempeh and tofu are both made from soybeans, but they are processed in different ways. Tempeh starts with cooked whole soybeans that are inoculated with a fermentation culture. The culture binds the beans into a firm cake. Tofu starts with soy milk. A coagulant separates the soy milk into curds, and the curds are pressed into blocks with different textures.

This difference explains why tempeh looks speckled and has a chewy bite, while tofu is usually smooth and pale. It also explains why tempeh commonly retains more of the soybean’s fiber. Tofu can have a lower calorie density when it contains more water, especially soft or silken tofu. Neither process makes one food universally superior.

Both foods are complete plant proteins in the practical sense that they provide all nine essential amino acids. The exact amount and digestibility vary by brand and serving. They can replace meat, eggs or dairy in many meals, but replacing a food also means replacing its nutrients. A tofu or tempeh meal still benefits from vegetables, grains, legumes, fruit and a reliable vitamin B12 source.

Tempeh vs tofu nutrition: how to compare fairly

Start with the same weight, such as 100 grams, rather than comparing one package serving with another. Then check whether the product is plain, marinated, smoked, breaded or fried. Added oil, sugar and salt can change the nutrition more than the difference between plain tempeh and plain tofu.

Texture also changes water content. Soft tofu may have fewer calories and less protein per 100 grams than extra-firm tofu simply because it contains more water. Tempeh brands may add grains, seeds or flavorings. Some tofu is set with calcium sulfate, while other tofu uses magnesium chloride or a combination of coagulants. These details matter when calcium is a nutrition goal.

Use the table in this guide as a practical range, not a laboratory promise. Read the package label for the product in your refrigerator. If you are tracking a nutrient for a medical reason, record the brand and serving size instead of relying on a generic database entry.

Calories and macronutrients

Plain tempeh often has more calories than firm tofu per 100 grams because it is denser and contains less water. The difference is usually manageable. A 100-gram serving of tempeh may provide about 170 to 195 calories, while firm tofu may provide around 140 to 145 calories. Silken tofu can be lower, and fried tofu can be substantially higher.

Most of tempeh’s calories come from fat and protein, with a smaller amount from carbohydrate. Tofu is also mainly protein and fat, but its carbohydrate content is often very low. The most useful comparison depends on the rest of the meal. If you are adding tempeh to a grain bowl, its calories may help create a satisfying meal. If you are making a light soup, soft tofu may fit more comfortably.

Oil is the common hidden calorie source. Pan-frying a block in several tablespoons of oil can add more calories than the soybean food itself. Baking, steaming, air-frying with a light coating, grilling or using a nonstick pan can preserve texture with less added fat. Sauces made with coconut milk, peanut butter or sugar also deserve attention.

Protein for muscle, satiety and everyday meals

Tempeh’s small protein advantage is useful, but the practical difference is rarely decisive. A 100-gram serving may provide 18 to 20 grams of protein from tempeh and 16 to 18 grams from firm tofu. A larger serving, a side of edamame or a bean-based sauce can close that gap easily.

For muscle maintenance, total daily protein and resistance training matter more than choosing one soy food. Spread protein across meals and include a serving after training when convenient. Add tofu to a scramble, tempeh to a sandwich, or either food to a bowl with beans and whole grains. People with higher protein needs may benefit from a dietitian’s help to plan enough total protein without excessive calories.

Protein can improve fullness, but fullness is influenced by fiber, water, volume, sleep and eating habits. Tempeh’s firmer texture encourages chewing and may make a meal feel substantial. Tofu’s smooth texture works well in soups, sauces and blended desserts. Choose the form that helps you eat a balanced meal consistently.

Fiber and digestion: why tempeh usually leads

Tempeh keeps the soybean’s structure, so it usually contains more fiber than tofu. Fiber supports stool bulk, normal bowel movements and a diverse gut environment. A serving of tempeh may contribute several grams, while tofu often contributes fewer. The exact amount depends on the recipe and the label.

Fermentation may make some soy carbohydrates easier for certain people to tolerate. That does not mean tempeh is guaranteed to prevent gas or bloating. People respond differently, and a large serving can still be uncomfortable. Start with a small portion, cook it thoroughly and increase gradually.

Tofu can be useful when you want a lower-fiber soy protein. Soft tofu is gentle in soups, congee-style meals and blended dishes. This may suit someone temporarily following a lower-fiber plan, although a medical diet should be supervised. If you have ongoing pain, diarrhea, blood in stool or unexplained weight loss, seek medical care rather than experimenting with different soy products.

Calcium: the tofu advantage depends on the coagulant

Firm tofu can be a strong calcium source when calcium sulfate is used to set the soy milk. Some packages provide several hundred milligrams per serving. Other tofu products use a different coagulant and contain much less calcium. The front of the package cannot tell you the answer; check the Nutrition Facts panel and ingredients.

Tempeh supplies some calcium, but it is usually not as concentrated as calcium-set tofu. It can still contribute to daily intake when combined with fortified plant milk, yogurt, leafy greens or other calcium foods. Spread calcium-containing foods through the day for a practical pattern.

Calcium is only one part of bone health. Vitamin D status, protein, physical activity, hormones, smoking, alcohol and overall energy intake also matter. If you have a fracture, low bone density or a condition affecting absorption, ask for individualized advice.

Iron and zinc in tempeh and tofu

Both foods can contribute plant-based iron. Tempeh and tofu often provide similar amounts per 100 grams, although brands vary. The iron is non-heme iron, which is absorbed less predictably than heme iron from animal foods. Absorption improves when the meal includes vitamin C.

Serve soy foods with tomatoes, cabbage, bell peppers, broccoli, kiwi, citrus or berries. Soaking, cooking and fermentation can change compounds that bind minerals, but they do not turn a food into a guaranteed iron supplement. Tea and coffee may reduce absorption when taken directly with an iron-focused meal.

Zinc is also present in soy foods, but phytate can reduce absorption. Variety helps. Include beans, whole grains, nuts and seeds, and use food preparation methods you enjoy. If you have fatigue, frequent headaches, pale skin or restless legs, request appropriate testing instead of guessing from a nutrition table.

Vitamin B12: an important vegan nutrition issue

Plain tempeh and tofu are not dependable vitamin B12 sources. Fermentation does not automatically make tempeh a B12 food. Some products are fortified, but fortification is brand-specific and can change over time. Look for vitamin B12 in the nutrition panel and follow the serving size.

Vitamin B12 supports red blood cell formation and normal nerve function. A deficiency can develop gradually, and symptoms may be nonspecific. People eating a fully vegan diet generally need a regular fortified-food pattern or a B12 supplement recommended by a qualified professional. Do not assume that seaweed, fermented foods or unfortified soy provide enough.

Fortified tofu or tempeh can be convenient, but read the label for the amount per serving and storage instructions. If you have numbness, weakness, balance changes or persistent fatigue, arrange a medical assessment. B12 testing and treatment should be based on your situation.

Fermentation, phytates and soy compounds

Tempeh fermentation uses a controlled culture that grows through the cooked beans and binds them together. It produces the characteristic white coating and nutty aroma. A few dark or gray spots can occur as the culture matures, but strong ammonia odor, sliminess or unexpected colors can indicate spoilage. Follow the manufacturer’s guidance.

Fermentation can reduce some oligosaccharides and alter phytate, protein and flavor compounds. These changes may improve digestibility or mineral availability for some people, but research results depend on the exact starter, time and temperature. Tofu is not fermented, yet it remains a nutritious, easy-to-digest way to eat soy.

Soy contains isoflavones, natural compounds with weak estrogen-like activity. Normal servings of tofu and tempeh are generally compatible with a varied diet for most people. If you have a hormone-sensitive condition, take thyroid medication or have been given specific soy restrictions, discuss your intake with your clinician rather than relying on internet claims.

Tempeh vs tofu for weight loss

Either food can fit a weight-loss plan. Tempeh is more calorie-dense but often more filling because it contains protein, fiber and a firm texture. Tofu may provide fewer calories per gram, particularly when it is soft or packed in water. The better choice is the one that helps you create a satisfying meal within your energy needs.

Preparation matters. Deep-fried tofu, battered tempeh and sugary sauces can turn a moderate meal into a high-calorie one. Bake or grill the food, use a measured amount of oil, and fill the plate with vegetables. A reasonable serving might be 100 to 150 grams, but individual needs differ.

Weight change is shaped by the overall pattern, not one ingredient. Avoid promises that tempeh or tofu “burns fat.” If you are losing weight unintentionally, have a history of disordered eating or need a therapeutic diet, work with a healthcare professional.

Which tastes better?

Tempeh has a pronounced, nutty flavor and a firm, sliceable texture. Steaming it briefly can soften bitterness before marinating. It works well with ginger, garlic, soy sauce, chili, smoked paprika, maple, lime and peanut-based sauces. Thin slices become crisp at the edges while staying chewy inside.

Tofu has a mild flavor and absorbs marinades. Extra-firm tofu can be pressed, cubed and baked or pan-seared. Medium and soft tofu suit soups, curries, scrambles and sauces. Silken tofu can replace part of the cream in a blended dressing or dessert, although the finished dish still needs seasoning.

Texture is a nutrition factor in practice because enjoyment influences consistency. A person who dislikes a food will not benefit from buying it. Try both in familiar recipes and judge by taste, cost, convenience and how your body responds.

Cooking methods and nutrition

Steaming

Steaming tempeh for five to ten minutes can warm it and soften its flavor before marinating. It adds no oil and works well before baking or grilling.

Baking

Bake marinated cubes on a lined tray until browned. Use a measured teaspoon or tablespoon of oil rather than pouring freely. Turn the pieces once for even browning.

Pan-searing

A hot nonstick or well-seasoned pan creates a crisp surface. Tofu benefits from draining and pressing; tempeh benefits from thin, even slices. Watch sauces containing sugar because they can burn.

Blending

Silken tofu blends into soups, sauces, smoothies and desserts. The flavor is mild, so use herbs, spices, citrus or cocoa. Check the final recipe for added sugar and sodium.

Easy meal ideas using both foods

• Make a tofu scramble with mushrooms, spinach, turmeric and calcium-set extra-firm tofu.
• Use baked tempeh strips in a whole-grain sandwich with cabbage and a yogurt or tahini dressing.
• Add silken tofu to a miso soup with mushrooms and greens.
• Build a bowl with tempeh, brown rice, edamame, peppers and a lime dressing.
• Blend soft tofu with berries and oats for a high-protein breakfast.
• Use crumbled tempeh in tacos with beans, tomato, lettuce and avocado.

These combinations pair soy protein with vegetables, whole grains, legumes and vitamin C. They also make it easier to use a moderate portion rather than relying on a large block of one food.

Shopping checklist

For tempeh, look for a short ingredient list, a firm cake and a fresh mushroom-like or nutty smell. Flavored varieties can be convenient but may contain added sodium, sugar or oil. For tofu, choose the texture that fits the recipe and check whether calcium sulfate appears in the ingredients if calcium is important to you.

Compare the nutrition panel per 100 grams when possible. Check protein, fiber, calcium, iron, sodium and added sugars. Frozen tofu can develop a porous texture that absorbs marinades; it is safe when handled correctly and can be useful for stir-fries.

Keep unopened products refrigerated according to the package. Once opened, place tofu in a covered container with fresh water if the label recommends it, change the water daily and use it promptly. Store tempeh as directed, and discard either product if it smells sour in an unusual way, becomes slimy or shows unexpected mold.

Soy allergy, intolerance and medical questions

Tempeh and tofu are soy foods. A soy allergy can cause hives, swelling, vomiting, coughing, wheezing or a severe reaction. Avoid both products if you have been diagnosed with a soy allergy, and read labels for soy flour, soybean oil, miso, edamame and other soy ingredients.

Allergy and intolerance are different. Some people report digestive symptoms without an immune-mediated allergy, but symptoms still deserve attention. A clinician or allergy specialist can help identify the cause. Do not repeatedly challenge yourself with soy at home after a serious reaction.

Soy may interact with the absorption of levothyroxine when consumed close to the medication. Many people can eat soy with appropriate timing, but follow your prescriber’s instructions. People with kidney disease, digestive disorders or a restricted protein plan should ask for tailored advice.

Tempeh vs tofu: a practical decision guide

There is no need to choose one food forever. Rotate tempeh and tofu based on the meal, price, availability and your nutrition goals. A varied plant-based diet can include both.

Common misconceptions

• “Tempeh is always healthier.” Tempeh often has more fiber, but calcium-set tofu may provide more calcium and fewer calories.
• “Tofu is empty nutrition.” Tofu supplies protein and can provide iron and calcium depending on how it is made.
• “Fermented means unlimited.” Tempeh still contains calories, soy and sometimes added sodium or oil.
• “Soy gives enough B12.” Unfortified tofu and tempeh are not dependable B12 sources.
• “A package serving is always comparable.” Brands use different weights and product textures.

Use nutrition claims as a starting point, then check the actual ingredient list and label. The healthiest choice is usually the product that fits your whole meal and can be eaten consistently.

Frequently asked questions

Bottom line

Tempeh and tofu are versatile soy foods with different strengths.

Use tempeh for fiber and texture.

Use calcium-set tofu for a softer, calcium-focused choice.

Check labels for oils, sodium, calcium and added B12.

Sources and further reading

• USDA FoodData Central
• Cleveland Clinic: tempeh nutrition
• Health: tempeh versus tofu overview
• Foodmanac food database