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Protein cost by food · July 2026

Tofu (firm): what its protein really costs

USDA macros joined to a current US grocery price, reduced to the numbers that decide a shopping list.

$ per gram protein

$0.024

30 g protein costs

$0.71

Protein / 100 kcal

11.8 g

Cost rank

#9 of 25

Per 100 g serving

PriceCaloriesProteinCarbsFat
$0.4014417 g3 g9 g

To get 30 g of protein from tofu (firm) you need 176 g, which costs $0.71 and carries 254 kcal. Scaled to a common 100 g/day protein target, a week on tofu (firm) alone runs $16.47. The calorie load per 30 g protein is modest, so it fits calorie-capped plans.

Smarter swaps

Next cheaper per gram of protein: lentils (cooked) at $0.022/g (vs $0.024/g here). If calories are the constraint, canned tuna (in water) carries 22.4 g protein per 100 kcal against 11.8 g here, at a higher $0.042/g.

Tofu (firm) against the field

Prices move. The cheapest-protein planner recomputes this ranking live against your own protein target and calorie cap, and the full dataset is free to download.

Weekly cheap-macro grocery lists

Get a fresh lowest-cost-to-hit-your-macros shopping list each week.

Frequently asked

How much does protein from tofu (firm) cost?
$0.024 per gram of protein at current US grocery prices (July 2026). A 30 g protein serving costs $0.71 and requires 176 g of tofu (firm), which also brings 254 kcal.
Is tofu (firm) a cheap protein source?
It ranks #9 of 25 tracked foods on cost per gram of protein. The cheapest tracked source, oats (dry), costs $0.009/g, which is 2.7x cheaper.
Is tofu (firm) good for cutting (protein per calorie)?
It carries 11.8 g protein per 100 kcal, rank #11 of 25. The leanest tracked source is canned tuna (in water) at 22.4 g per 100 kcal.
What does a week of protein from tofu (firm) cost?
Hitting 100 g of protein per day from tofu (firm) alone costs $16.47 per week at current prices. Most people mix sources; the planner computes the cheapest mix for your exact target.

Prices are representative US grocery prices as of July 2026; your store will differ. Educational content, not medical or dietary advice.