How Many Grams Are in a Pound?
Quick Answer: 453.59 grams in 1 pound · 0.454 kg · 16 ounces
At a glance
- 1 avoirdupois pound = 453.59 g (the everyday pound — groceries, body weight, postage)
- In metric: 1 lb = 0.454 kg · 1 kg = 2.20 lb (exact international-standard values since 1959)
- Useful reverse: 500 g = 1.10 lb (a half-kilo — standard European package size)
A pound holds 453.59 grams, or almost exactly 0.454 kilograms. That's the clean cross-system number connecting the US customary pound with the metric gram — the conversion you need when an American recipe says "1 lb of butter" and your kitchen scale reads in grams, or when a European fitness app tracks you in kg but you think in pounds. The exact value is 453.59237 g, but 453.59 g (or 454 g rounded) is precise enough for any cooking, fitness, or everyday weighing. This page covers the full pound-to-gram conversion, the metric kilogram bridge (2.2 lb = 1 kg), and common body-weight kg↔lb references.
What does a pound look like on a gram scale?
pound → gram Quick Converter
Need more features? Try our complete pound to gram converter.
1 pound on the gram scale
1 pound = 453.59 g
Why "lb" for pound? The letter mystery
It looks wrong. The English word is "pound", but the abbreviation is lb. Neither letter is in "pound". The explanation: lb comes from the Latin word libra, meaning "scales" or "balance" (also the astrological constellation shaped like scales). Romans weighed commodities using a phrase, libra pondo, meaning "a pound by weight" — literally "scales weight".
- English kept the noun — pondo → pound, giving us the unit name.
- But took the abbreviation from elsewhere — libra → lb, giving us the symbol. So English fused two parts of the Latin phrase: the noun of one word with the abbreviation of another.
- Same origin: the "#" symbol — in North American usage, "#" is called the "pound sign" because it's historically a stylized abbreviation of lb — the letters written quickly with a horizontal bar through them. (Elsewhere it's the hash, octothorpe, or number sign.)
- The plural "lbs" is technically wrong — Latin abbreviations don't pluralize (you don't write "etcs" for "et ceteras"). But "lbs" is universally accepted in modern English and even dictionaries list it.
This is the same family of Latin weight words that gave Spanish libra, Portuguese libra, Italian libbra, French livre, and the abbreviation for the British pound currency: £. The £ symbol is a stylized "L" for libra — same origin, different unit (currency rather than weight).
How many pounds in a kilogram?
2.20 pounds per kilogram (exact: 2.20462 lb). This is the other half of the pound-metric bridge — and a search topic that gets hundreds of thousands of monthly queries on its own. Anyone using a European fitness app, a kg-reading kitchen scale, or an international recipe needs this factor in their head.
| Kilograms | Pounds | Grams |
|---|---|---|
| 0.1 kg | 0.22 lb | 100 g |
| 0.25 kg | 0.55 lb | 250 g |
| 0.5 kg | 1.10 lb | 500 g |
| 1 kg | 2.20 lb | 1,000 g |
| 2 kg | 4.41 lb | 2,000 g |
| 5 kg | 11.02 lb | 5,000 g |
| 10 kg | 22.05 lb | 10,000 g |
| 25 kg | 55.12 lb | 25,000 g |
| 50 kg | 110.23 lb | 50,000 g |
Quick mental math: kg × 2.2 ≈ pounds (0.2% off), and pounds ÷ 2.2 ≈ kg. For baking precision, use 2.2046 instead of 2.2.
Body-weight: kilograms to pounds for fitness
Fitness trackers, gym equipment, and travel scales constantly mix kg and lb. The table below covers common body-weight brackets for quick reference — useful when your tracker reads in kg but your pound-scale instinct doesn't match.
| Kilograms | Pounds | Approx. stones (UK) |
|---|---|---|
| 45 kg | 99.2 lb | 7 st 1 lb |
| 50 kg | 110.2 lb | 7 st 12 lb |
| 55 kg | 121.3 lb | 8 st 9 lb |
| 60 kg | 132.3 lb | 9 st 6 lb |
| 65 kg | 143.3 lb | 10 st 4 lb |
| 70 kg | 154.3 lb | 11 st 1 lb |
| 75 kg | 165.3 lb | 11 st 11 lb |
| 80 kg | 176.4 lb | 12 st 8 lb |
| 85 kg | 187.4 lb | 13 st 5 lb |
| 90 kg | 198.4 lb | 14 st 2 lb |
| 100 kg | 220.5 lb | 15 st 10 lb |
Stones are a UK weight unit: 1 stone = 14 pounds = 6.35 kg. UK gym equipment and medical charts still use stones-plus-pounds for body weight, which is why the last column is included.
Did you know?
The exact value 453.59237 grams per pound has 11 significant digits because it was engineered in 1959 to be simultaneously consistent with (a) the older UK grain-based pound (7,000 grains at 0.0648 g/grain = 453.5923 g) and (b) the SI kilogram, whose prototype at the time was a platinum-iridium cylinder held at the International Bureau of Weights and Measures near Paris. Starting in 2019, the kilogram was redefined in terms of Planck's constant (a fundamental physical constant) — which means the modern pound is no longer defined against a physical object at all. It's defined as exactly 0.45359237 kg, and the kilogram is defined in terms of a constant of nature. If the reference kilogram prototype were somehow destroyed, the pound would survive unchanged — a nice piece of metrological engineering.
How many grams in 2, 5, or 10 pounds?
Scale up by multiplying pound count by 453.59:
- ½ lb = 226.80 g (deli-counter half pound)
- 1 lb = 453.59 g (the canonical answer)
- 1½ lb = 680.39 g (dinner roast)
- 2 lb = 907.18 g (whole chicken, 2-lb bag)
- 3 lb = 1,360.78 g (pork shoulder)
- 5 lb = 2,267.96 g (5-lb bag of flour — 2.27 kg)
- 10 lb = 4,535.92 g (large bag of rice — 4.54 kg)
- 20 lb = 9,071.85 g (turkey-sized — 9.07 kg)
- 50 lb = 22,679.62 g (bulk bag — 22.68 kg)
For fractional pounds: multiply first. 2.5 lb × 453.59 = 1,133.98 g ≈ 1.13 kg.
Complete pound-to-gram reference
Gram values are NIST-exact, rounded to 1 decimal.
| Pounds | Grams | Kilograms | Ounces |
|---|---|---|---|
| ⅛ lb | 56.7 | 0.057 | 2 oz |
| ¼ lb | 113.4 | 0.113 | 4 oz |
| ½ lb | 226.8 | 0.227 | 8 oz |
| ¾ lb | 340.2 | 0.340 | 12 oz |
| 1 lb | 453.6 | 0.454 | 16 oz |
| 1¼ lb | 566.9 | 0.567 | 20 oz |
| 1½ lb | 680.4 | 0.680 | 24 oz |
| 2 lb | 907.2 | 0.907 | 32 oz |
| 2½ lb | 1,134.0 | 1.134 | 40 oz |
| 3 lb | 1,360.8 | 1.361 | 48 oz |
| 5 lb | 2,268.0 | 2.268 | 80 oz |
| 10 lb | 4,535.9 | 4.536 | 160 oz |
| 25 lb | 11,339.8 | 11.340 | 400 oz |
| 50 lb | 22,679.6 | 22.680 | 800 oz |
Word order matters
- "How many grams in a pound?" → 453.59 (this page's main answer, avoirdupois)
- "How many pounds in a gram?" → 0.0022 (1/453.59, extremely small)
- "How many grams in a troy pound?" → 373.24 (different system, smaller pound — 12 troy oz × 31.10 g)
- "How many pounds in 500 grams?" → 1.10 lb (half a kilo, slightly over 1 lb)
- "How many pounds in a kilogram?" → 2.20 lb (exact: 2.2046)
The formula
grams = pounds × 453.59237 (avoirdupois, exact)
kilograms = pounds × 0.45359237 (same factor, kilo-scaled)
pounds = kilograms × 2.20462 (reverse)
The 453.59237 g value was fixed in 1959 by the international yard-and-pound agreement. Since 2019, the kilogram has been defined in terms of Planck's constant (a fundamental physical constant), making the pound indirectly defined against nature itself — not against any physical prototype. For working purposes, 453.59 g is the right precision for recipes, fitness, and everyday weighing.
How to work with pounds, grams, and kilograms
Baking from US or European recipes
If you bake from American recipes, you'll see "lb" and "oz". If you bake from European recipes, you'll see "g" and "kg". The simplest practice: weigh everything in grams, regardless of the recipe's original unit. Grams are finer (453× finer than a pound, 28× finer than an ounce), so your scale has more precision per measurement. Convert the recipe once at the start (lb × 453.59 = g), write the grams in the margin, and bake from the metric column.
Fitness and body-weight tracking
US apps (MyFitnessPal, Apple Health US) usually default to pounds; European apps (Yazio, or anything localized for EU) default to kilograms. Most apps have a unit-switch setting. If you can't change it, the 2.2 conversion is cheap: weight in kg × 2.2 = approximate weight in pounds (0.2% error). For precise medical uses, use 2.20462 or let the app convert.
Shopping from mixed-unit labels
US food packaging shows both pounds and grams on nutrition labels by FDA regulation. If a package says "1 lb (454 g)", that's a rounded 454 g — the exact value is 453.59 g. Some imports show only grams/kg; multiply kg by 2.2 for a pound estimate. For buying in bulk (5-lb bags, 10-lb bags), the gram-to-pound math is linear: multiply or divide by 453.59.
Frequently Asked Questions
How many grams are in a pound?
453.59 grams in 1 avoirdupois pound — the pound used everywhere in daily life (groceries, body weight, postage, meat). Exact value: 453.59237 g, fixed by international definition in 1959. For kitchen and fitness purposes, 453.59 g (or 454 g rounded) is precise enough.
How many kilograms are in a pound?
0.454 kilograms in 1 pound (exact: 0.45359237 kg). Or flipped: 1 kg = 2.20 pounds (exact: 2.2046 lb). Most kitchen and fitness conversions round to 2.2 lb per kilo, which is accurate to within 0.2%.
How many pounds are in a kilogram?
2.20 pounds in 1 kg (exact: 2.20462 lb). The inverse of the kg-to-pound factor. If a fitness app or European scale shows kg and you think in pounds, multiply by 2.2 for a quick conversion.
How many pounds is 500 grams?
1.10 pounds (500 ÷ 453.59). 500 g is a half-kilo — a common European package size for butter, meat, or pasta. Slightly more than 1 lb, not exactly 1 lb. For rough conversions, think "500 g = just over 1 lb".
How many grams are in 5 pounds?
2,268 grams (5 × 453.59). A 5-pound bag of flour or sugar — a standard grocery size in the US — weighs 2,268 g or about 2.27 kg. Useful when scaling a large-batch recipe from pounds to metric.
How many pounds is 75 kilograms (body weight)?
165.3 pounds (75 × 2.2046). Common body-weight benchmarks: 60 kg = 132 lb, 75 kg = 165 lb, 90 kg = 198 lb, 100 kg = 220 lb. Multiply kg by 2.2 for a quick mental estimate.
Why is pound abbreviated "lb" and not "pd"?
The abbreviation lb comes from the Latin word libra (meaning "scales" or "balance"), not from the English word "pound". Romans used libra pondo ("a pound by weight") — English kept the word pound from pondo, but the abbreviation lb from libra. Same reason "#" is called the "pound sign" in some contexts: it's an ASCII shorthand for libra.
Are there grams in a troy pound?
Yes — a troy pound (used for precious metals) contains 12 troy ounces = 373.24 g, lighter than an avoirdupois pound. But the troy pound itself is largely obsolete; modern gold and silver are priced per troy ounce (31.10 g), not per troy pound. When this page says "pound", it means avoirdupois — 453.59 g.
How do I convert pounds to grams for baking?
Multiply pounds by 453.59. For quick mental math, multiply by 450 (0.8% off) or 454 (0.09% off) — both are close enough for home baking. Example: 2.5 lb flour × 453.59 = 1,134 g. Serious baking works directly in grams because the unit is finer and more precise than ounces or pounds, so switch your scale to grams once and stay there.
Related Weight Conversions
- How many ounces in a pound? — 16 oz
- How many grams in an ounce? — 28.35 g
- How many ounces in a cup? — 8 fl oz (volume)
- How many mL in an ounce? — 29.57 mL (volume)
- Pound to Gram full converter
- Pound to Kilogram full converter
- Kilogram to Pound full converter
- Gram to Pound full converter
- Cooking Volume to Weight Converter — density-based
- Cooking Weight to Volume Converter — reverse
- All Cooking Measurement Tools
This page uses the avoirdupois pound (453.59237 g exact, 453.59 g in working form) as the default — the pound used in everyday life across the US, UK, Canada, and most of the English-speaking world for food, shipping, body weight, and commerce. The metric gram and kilogram are the SI reference units used worldwide in science, European commerce, and international recipes. Conversions in tables round to 1 decimal place for readability.