Yield
29 oz
Water
14 cups
Press
30 min
14 cups
8.0 cups
4.0 tsp
30 min
Inputs
Result
2 cups beans × 8 oz/cup × 1.8 yield factor = 28.8 ≈ 29 oz. Water = 2 × 7 = 14 cups. Nigari at 1.0 tsp/cup × 2.0 factor = 4.0 tsp.
Inputs
Result
1 cup × 8 oz × 2.2 silken factor = 17.6 ≈ 18 oz. Water = 1 × 10 = 10 cups. Gypsum at 1.2 × 1.0 × 2.2 factor adjust = 2.6 tsp.
Two cups of dry soybeans yield about 28–29 ounces of firm tofu (roughly 2 standard blocks). Each cup of dry beans produces about 4 cups of soymilk, which then coagulates into approximately 14 ounces of tofu depending on firmness.
| Firmness | Yield per Cup Beans | Water Ratio | Press Time |
|---|---|---|---|
| Silken | 18 oz | 1:10 | None |
| Medium | 16 oz | 1:8 | 15 min |
| Firm | 14 oz | 1:7 | 30 min |
| Extra Firm | 12 oz | 1:6 | 45 min |
Nigari (magnesium chloride) is the traditional Japanese coagulant, producing smooth, sweet tofu at 2 tsp per cup of dry beans. Gypsum (calcium sulfate) gives a tender silky texture. Lemon juice and apple cider vinegar are accessible alternatives at 6 tsp per cup of beans.
Press time determines firmness: silken tofu skips pressing entirely, medium tofu presses for 15 minutes, firm for 30 minutes, and extra firm for 45 minutes. Use a tofu press or stack plates with a weight (a can of beans works well).
The soybean-to-water ratio ranges from 1:6 for extra-firm tofu to 1:10 for silken. For standard firm tofu, use 7 cups of water per cup of dry soybeans. This water is used for blending the soaked beans into soymilk.
Read our guide
Read our guide
Read our guide
Soybean and starter ratios for tempeh
Vital wheat gluten ratios for seitan
Oat-to-water ratios for plant milk
Explore all our free food, baking, and brewing calculators
Last Updated: Mar 19, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.