{"schema":"askedwell-answer-v1","url":"https://askedwell.com/pages/how-to-convert/pounds-to-grams","question":"How do I convert pounds to grams?","short_answer":"1 pound (lb) = 453.59 grams (g). Most home recipes round to 1 lb = 454 g or 450 g. For 1 ounce = 28.35 g (commonly rounded to 28 g). Multiply pounds × 453.59 for exact gram conversion.","long_answer":"**The conversion (always the same number)**\n\n1 pound (lb) = 453.59237 grams (g) — defined exactly by the international avoirdupois pound, adopted 1959. Most home cooking + baking rounds to 454 g (precise to 0.1%) or 450 g (precise to 0.8%). For very precise applications (sourdough percentages, scaling commercial recipes), use 453.6.\n\n**Quick reference table (memorize these for cooking)**\n\n| Pounds | Grams (exact) | Grams (cooking-rounded) |\n|---|---|---|\n| 1/4 lb | 113.4 g | 115 g |\n| 1/2 lb | 226.8 g | 225 g |\n| 3/4 lb | 340.2 g | 340 g |\n| 1 lb | 453.6 g | 450 g |\n| 1.5 lb | 680.4 g | 680 g |\n| 2 lb | 907.2 g | 900 g or 910 g |\n| 5 lb | 2,268 g (2.27 kg) | 2,270 g |\n| 10 lb | 4,536 g (4.54 kg) | 4,500 g |\n\n**Ounces in the mix (most US recipes mix lb + oz)**\n\n1 pound = 16 ounces. So 1 ounce = 453.59 / 16 = 28.35 g.\n\n| Ounces | Grams |\n|---|---|\n| 1 oz | 28.35 g (round to 28) |\n| 2 oz | 56.7 g (round to 57) |\n| 4 oz | 113.4 g (round to 113) |\n| 8 oz (1/2 lb) | 226.8 g (round to 227) |\n| 12 oz | 340.2 g (round to 340) |\n| 16 oz (1 lb) | 453.6 g (round to 454) |\n\nNOTE: US \"ounce\" by weight is 28.35 g. US \"fluid ounce\" is 29.57 mL (volume, not weight). Don't confuse them — recipes specifying weight use the weight ounce; recipes specifying volume use the fluid ounce. They differ by ~4%.\n\n**When to convert vs use a scale**\n\nFor BAKING and FERMENTATION precision (any recipe where percentages matter — sourdough hydration, dough strength, brine concentration), use a scale set to grams directly. Don't convert from cup or pound measurements — go straight to grams. The grams-to-grams accuracy is much better than pounds-to-cups-to-grams chains.\n\nFor COOKING (where ±5% doesn't change the outcome), pound-to-gram conversions with cooking-rounded values are fine.\n\n**Common recipe scenarios**\n\n- \"2 lb beef chuck for stew\" → 900-910 g (any number in that range works)\n- \"1 lb sourdough flour\" → 454 g (use exact for hydration calculation)\n- \"8 oz cream cheese\" → 226 g (one block; usually pre-portioned)\n- \"1.5 lb chicken breast\" → 680 g (about 3 medium breasts)\n- \"5 lb whole chicken\" → 2.27 kg or 2,270 g (typical roaster)\n\n**Reverse: grams to pounds**\n\nDivide grams by 453.59. Or use these mental shortcuts:\n- 1000 g (1 kg) ≈ 2.2 lb\n- 500 g ≈ 1.1 lb\n- 100 g ≈ 3.5 oz (0.22 lb)\n- 50 g ≈ 1.8 oz\n\n**Cross-reference:** see /pages/how-to-convert/ounces-to-grams for ounce-specific conversion + /pages/how-to-convert/cups-to-grams for volume-to-weight (which requires knowing what ingredient) + /pages/how-to-convert/fahrenheit-to-celsius for temperature.","ranges":[{"condition":"Quick mental conversion needed","duration":"< 5 seconds","note":"1 lb ≈ 450 g (within 1%)"},{"condition":"Cooking-precise conversion","duration":"5 seconds","note":"multiply pounds × 454"},{"condition":"Baking-precise conversion","duration":"10 seconds","note":"multiply pounds × 453.59 for sourdough hydration math"}],"variables":[{"name":"Application precision needed","effect":"Cooking: ±5% fine (use 450). Baking: ±1% needed (use 454). Commercial: exact (453.59)."},{"name":"Weight vs volume ounce","effect":"Weight ounce = 28.35 g. Fluid ounce = 29.57 mL. Check recipe context — meat is weight, water/oil in oz is usually volume."},{"name":"Rounding strategy","effect":"Round to nearest 5 g for cooking; nearest 1 g for baking; exact for percentages."}],"sources":[{"label":"NIST — International Pound definition (1959)","url":"https://www.nist.gov/pml/owm/si-units-mass","note":"Authoritative metric-to-imperial conversion source","tier":1},{"label":"USDA FoodData Central","url":"https://fdc.nal.usda.gov/","note":"Standard recipe weights in both US and metric units","tier":1},{"label":"King Arthur Baking — measurement conversion","url":"https://www.kingarthurbaking.com/learn/resources/ingredient-weight-chart","note":"Practical cooking-precision conversion table","tier":2},{"label":"BIPM (International Bureau of Weights and Measures) — SI brochure","url":"https://www.bipm.org/en/publications/si-brochure","note":"Definitive metric definition","tier":1}],"faq":[{"question":"Why does my recipe say \"1 lb (454 g)\" if the exact value is 453.59?","answer":"Cookbook convention rounds to whole grams for readability. 453.59 → 454 is the standard \"round half up\" convention; some publishers use 450 g (cleaner number, 0.8% error). Either works for cooking. For commercial bakers calculating sourdough percentages, the exact 453.59 matters (0.1% accumulates over multi-pound batches); for home use, both 450 and 454 give indistinguishable results."},{"question":"Is the metric pound (500 g) the same as the US pound?","answer":"No — they're different. The US/imperial pound (avoirdupois) = 453.59 g exactly. The metric pound (used informally in Germany, Netherlands, parts of Scandinavia) = 500 g. If you're translating a European recipe that says \"500 g\" or \"1 metric pound,\" use 500 g directly — DO NOT convert to US pounds. If it says \"1 lb\" with English context, it's the US pound = 454 g."},{"question":"Can I just measure by cups instead of converting pounds?","answer":"For baking — NO. Cup measurements vary 20-40% by how packed/sifted the ingredient is. A \"cup of flour\" can weigh 120-180 g depending on technique. Always weigh in grams for baking precision. For cooking — YES, cup measurements are usually fine; the recipe tolerates the variance."}],"keywords":["pounds to grams","lb to g","pounds grams conversion","oz to grams","1 lb in grams"],"category":"cooking","date_published":"2026-05-21","date_modified":"2026-05-21","license":"CC-BY-4.0","attribution":"https://askedwell.com"}