Bacon is product- and process-specific
USDA FSIS describes dry curing, pumping and immersion curing as distinct bacon methods and gives different ingoing nitrite limits by method. A home recipe should be based on a tested formulation rather than a generic “grams per pound” rule.
Quick answer
For a 6.25% nitrite Cure #1 product: dry-cured bacon at the common 156 ppm target works out to 2.50 g per kg (1.13 g per lb) of belly; pumped or immersion-cured bacon at the 120 ppm reference works out to 1.92 g per kg (0.87 g per lb). Those method caps come from the U.S. bacon framework (9 CFR 424.22) evaluated on the skin-free green weight — pick the method your recipe actually uses below.
Bacon Curing Salt Calculator
Method-aware bacon cure math. Pick the bacon method your recipe uses — the tool sets the matching U.S. ingoing-nitrite reference (120 ppm pumped or immersion-cured, 200 ppm dry-cured) and calculates the cure weight for your target.
Calculated result only: verify the exact product label, recipe/process and applicable requirements before use.
Assumptions, units and limits
- U.S. references (9 CFR 424.22): pumped/massaged bacon 120 ppm ingoing sodium nitrite plus 550 ppm sodium ascorbate or erythorbate; immersion-cured bacon 120 ppm; dry-cured bacon 200 ppm. All are evaluated against the actual or estimated skin-free green weight of the belly.
- Targets are capped at the method reference in this tool: entering a higher value shows an error instead of a recipe. Lower targets (for example 120–156 ppm in a dry cure) are common in tested home recipes.
- The familiar "0.25% Cure #1" convention equals about 156 ppm with a 6.25% product — under the 200 ppm dry-cured reference but above the 120 ppm pumped/immersion reference. The method matters as much as the amount.
- Nitrate-containing cures (Cure #2) are not permitted in U.S. bacon and are discouraged for home bacon by extension guidance.
- Commercial bacon rules are not a home recipe. Use a tested home-bacon process from a trusted source (for example your university extension) and treat this tool as the arithmetic around it.
Background and method differences: why the product matters · Cure #1 vs Cure #2.
What curing salt is commonly used for bacon?
Oregon State University Extension describes bacon curing with salt, curing salt and flavoring ingredients and notes that Cure #2/nitrate-containing blends are not recommended for bacon. The exact product still needs to be checked against the recipe and package label.
Dry-cured vs pumped bacon
| Method | FSIS bacon reference | Why it matters |
|---|---|---|
| Dry-cured | USDA FSIS states sodium nitrite cannot exceed 200 ppm ingoing. | The calculation and process need to match the dry-cure method. |
| Pumped / immersion | USDA FSIS states sodium nitrite cannot exceed 120 ppm ingoing. | Pumping also has additional requirements such as cure accelerators in commercial bacon. |
Those are official U.S. commercial reference statements for bacon; they are not a universal recipe for every home-curing scenario.
Bacon cure chart — grams of Cure #1 by batch size (6.25% label)
Both U.S. reference caps are shown so you can match the method your recipe actually uses. All figures are evaluated on the skin-free green weight of the belly.
| Batch size | Dry-cured @ 200 ppm | Pumped / immersion @ 120 ppm | ≈ tsp (dry / pumped) |
|---|---|---|---|
| 1 lb (454 g) | 1.45 g | 0.87 g | 0.25 / 0.15 tsp |
| 2 lb (907 g) | 2.91 g | 1.74 g | 0.51 / 0.31 tsp |
| 5 lb (2.27 kg) | 7.26 g | 4.35 g | 1.27 / 0.76 tsp |
| 10 lb (4.54 kg) | 14.52 g | 8.70 g | 2.55 / 1.53 tsp |
| 25 lb (11.34 kg) | 36.29 g | 21.77 g | 6.37 / 3.82 tsp |
| 1 kg | 3.20 g | 1.92 g | 0.56 / 0.34 tsp |
| 2 kg | 6.40 g | 3.84 g | 1.12 / 0.67 tsp |
| 5 kg | 16.00 g | 9.60 g | 2.81 / 1.68 tsp |
Dry-cured grams = weight × 200 ÷ (0.0625 × 1,000,000); pumped grams = weight × 120 ÷ (0.0625 × 1,000,000). Teaspoon figures are approximate conversions (1 level tsp ≈ 5.7 g of Cure #1) — weighing on a gram scale is the reproducible method. Many published home-bacon recipes land near 1 level tsp per 5 lb for pumped-style bacon, which is the 120 ppm line in this table.
Why we do not publish one “grams per pound” answer
Different curing blends contain different concentrations of nitrite and may contain nitrate or other ingredients. A fixed amount becomes misleading as soon as the product composition changes. The better workflow is to select the target required by your tested recipe/process and enter the concentration from the actual package label.
Bacon calculation workflow
- Weigh the meat.
- Choose the bacon method represented by your recipe/process.
- Verify the curing product and its nitrite concentration.
- Use the calculator to inspect the math and basis.
- Cross-check against your tested recipe or applicable official requirement.
Worked examples: 5 lb (2,268 g) of belly
Dry-cured at 156 ppm
Cure (g) = (156 × 2,268) ÷ (0.0625 × 1,000,000) = 5.66 g of a 6.25% Cure #1 product — 1.13 g per pound. The 156 ppm target sits below the 200 ppm dry-cured reference.
Pumped or immersion-cured at 120 ppm
Cure (g) = (120 × 2,268) ÷ 62,500 = 4.35 g — 0.87 g per pound. The same 5.66 g that is fine for a dry cure would push a pumped or immersion process above its 120 ppm reference, which is why the method select drives the target in the calculator.
Frequently asked questions
How much Cure #1 should I use for bacon?
It depends on the method. Dry-cured bacon has a 200 ppm ingoing reference, which allows the familiar 0.25% convention (about 156 ppm with a 6.25% product). Pumped and immersion-cured bacon are limited to 120 ppm ingoing — no more than about 0.19% of green weight with a 6.25% product. Weigh the belly, pick the method that matches your recipe, and stay at or below the matching limit.
Why can't I use Cure #2 on bacon?
U.S. regulations permit nitrite but not nitrate in bacon, and Oregon State University Extension specifically advises against nitrate-containing blends such as Prague Powder #2 for home bacon. If your recipe is a bacon recipe, it should call for Cure #1 or an equivalent nitrite-only product.
What does green weight mean?
Green weight is the weight of the fresh, uncured product before any cure, pump or brine is added. The federal bacon references are evaluated against the actual or estimated skin-free green weight of the belly, which is why this calculator asks for the raw belly weight rather than a post-pump weight.
Does pumped bacon need anything besides Cure #1?
Under the federal bacon framework, pumped or massaged bacon is formulated with 120 ppm ingoing sodium nitrite together with 550 ppm sodium ascorbate or sodium erythorbate as a cure accelerator. Home recipes approximate commercial processes, so follow a tested home-bacon recipe from a trusted source for the full ingredient list and process steps.
Is 0.25% Cure #1 safe for every bacon method?
0.25% delivers about 156 ppm ingoing nitrite with a 6.25% product — below the 200 ppm dry-cured reference but above the 120 ppm reference for pumped or immersion-cured bacon. The same amount is not interchangeable between methods, which is why this calculator keys the target to the method you select.
Sources
USDA FSIS — Bacon and Food Safety
Official page covering bacon curing methods and the method-specific ingoing nitrite limits.
Oregon State University Extension — Making cured bacon at home
Home-bacon publication covering curing ingredients, methods and recipe-based safety guidance.
Calculate a bacon batch
Use the main calculator with Cure #1 and the concentration printed on your product label.