Enter your bone quantity, water volume, spice amounts, and simmer time to calculate the perfect pho broth ratios. You'll get the broth yield, cost per batch, cost per bowl, and a full ingredient breakdown — so every pot you make is consistent and profitable.
Broth Cost Per Bowl
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Usable Broth Yield
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Bowls Per Batch
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Total Batch Cost
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Bone-to-Water Ratio
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Suggested Menu Price (30% Food Cost)
A classic ratio is about 0.5–1 lb of bones per quart of water for a rich, full-bodied broth. Beef broth benefits from a higher ratio (closer to 1 lb/qt), while chicken pho can use slightly less. The calculator shows your exact ratio so you can adjust batch to batch.
Expect to lose roughly 20–30% of your starting water volume to evaporation during a long simmer. A 6-quart starting volume typically yields around 4–5 quarts (128–160 oz) of usable broth. Simmer time, pot lid position, and heat level all affect final yield.
Target 25–30% food cost for the complete bowl. For broth alone, keeping cost under $1.00–$1.50 per bowl leaves room for protein, noodles, garnish, and packaging while staying within that margin. The calculator uses 30% as the benchmark for its suggested menu price.
Beef knuckle bones and neck bones offer the best collagen yield per dollar, typically $1.50–$3.00/lb. Marrow bones add richness but cost more. A mix of knuckle and marrow (70/30) balances cost and flavor. Oxtail adds depth but significantly raises batch cost.
Beef pho broth simmers 6–12 hours to fully extract collagen and flavor from the bones. Chicken pho is lighter and needs only 3–6 hours. Over-simmering can turn the broth bitter and muddy — especially if spices are left in too long. Remove spice bags after 2–3 hours.
Pho profitability is sensitive to three variables: broth yield (how many bowls your pot actually produces), protein portion weight (especially expensive cuts like brisket and rare beef), and garnish drift (herbs, sprouts, lime, and sauces add up fast). Small inconsistencies in any of these can erode margins significantly over time.
Yes — extra protein, premium cuts, or larger bowl sizes should carry an upcharge. Even a $1–$2 add-on charge for an extra portion of brisket or rare beef can make a meaningful difference to your food cost percentage, especially given the high cost of quality beef.
The core pho spice blend includes star anise, cinnamon, cloves, black cardamom, and coriander seeds — toasted and added to the broth. Charred onion and ginger are equally critical for depth and color. Fish sauce, rock sugar, and salt season the finished broth. This calculator lets you dial in quantities for any batch size.