Here is the answer up front: 1 pound = 453.6 grams. It is exact, it does not depend on what you are weighing, and it is the same figure professional kitchens and recipe developers use. The rest of this guide is the useful part around the number: a full table, three worked examples from real recipes, when to round and when not to, and the difference between the ounces on your kitchen scale and the ounces on a jewellery scale.

1 Pound in Grams conversion table

Pound Grams
1 pound 453.6 grams
5 pounds 2,268 grams
10 pounds 4,536 grams
25 pounds 11,340 grams
50 pounds 22,680 grams
100 pounds 45,359 grams
250 pounds 113,398 grams
500 pounds 226,795 grams
1,000 pounds 453,590 grams

Quick reference:

  • 1 pound = 453.6 grams
  • 10 pounds = 4,536 grams
  • 50 pounds = 22,680 grams
  • 250 pounds = 113,398 grams
  • 1,000 pounds = 453,590 grams

How to convert pounds to gramss

The conversion is a single multiplication, and the factor is exact: 453.6 grams per pound, derived from the international definition of the pound (453.59237 g exactly) and the ounce (28.349523125 g exactly). Because the factor is exact, the only errors in practice come from rounding and from the scale. Rounding to 28 g per ounce or 454 g per pound is fine for soups, stews and roasts; for bread, pastry and anything with yeast or baking powder, keep the extra decimals and weigh to the gram. A digital scale that reads to 1 g is the best twenty dollars a baker can spend, and it makes every conversion on this page unnecessary — you simply weigh the ingredient in the unit the recipe already uses.

Why this conversion comes up

You will use this conversion in two directions, and they feel different. Converting a recipe into your scale's units is a one-off piece of arithmetic before you start. Converting a shopping quantity — a 1 kg bag of flour, a 500 g block of cheese — into the recipe's units is something you do while standing in the kitchen with the bag open. Both directions use the same factor, and both are covered in the table below, so you can find the number without doing the multiplication in your head.

Worked examples

Jam sugar, weighed not scooped

A jam recipe calls for 2 pound of sugar, and jam is one place where the sugar weight is not negotiable: too little and it will not set, too much and it is cloying. 2 pound is 907.2 grams. Weigh the sugar on a scale in the unit the recipe uses — a cup of sugar can vary by 10 g depending on how it was scooped.

Meal-prep protein portions

Your meal plan calls for 5 pound of cooked chicken per portion, and you are prepping five portions: 25 pound, or 11,340 grams of chicken to cook. Weigh the chicken after cooking, not before — meat loses about a quarter of its weight to cooking, and the plan's number is almost always a cooked weight.

A spice blend by weight

A spice blend recipe calls for 1 pound of paprika as its base, with smaller amounts of the other spices. 1 pound is 453.6 grams. Weighing spices is more accurate than spooning them, especially for large batches, because a spoon of paprika can vary by a gram depending on how it was packed.

Practical guidance

Reading labels is the other everyday use. A carton of stock is labelled in millilitres, a recipe asks for quarts; a bottle of oil is labelled in litres, a recipe asks for cups; a bag of flour is labelled in kilograms, a recipe asks for pounds. The conversion lets you shop from the recipe rather than guessing at the shelf, and it stops the common mistake of buying a container that is almost — but not quite — enough.

Common mistakes to avoid

  1. Weighing with the bowl on the scale and forgetting to tare. Weighing with the bowl on the scale and forgetting to tare. The bowl's weight gets added to the ingredient, and everything after it is wrong. Tare the empty bowl, then add the ingredient.
  2. Rounding to a 'nice' number in baking. Rounding to a 'nice' number in baking. 250 g rounded to 9 oz is fine for a stew; 250 g of flour rounded to 8 oz in a bread dough is a 7% error and the dough will feel it. Keep the extra decimals for baking.
  3. Converting volume to weight without the ingredient. Converting volume to weight without the ingredient. Grams and ounces are weight; cups and millilitres are volume. The conversion between them depends on density, so there is no universal factor — check the ingredient table for flour, sugar, butter and the rest.
  4. Trusting a spring scale for small amounts. Trusting a spring scale for small amounts. Spring scales are inaccurate below about 50 g. For spices, yeast and baking powder, use a digital scale that reads to 1 g, or measuring spoons.

Frequently asked questions

Can I convert pounds to gramss for any ingredient?

Yes — this is a weight-to-weight conversion, so the ingredient does not matter. A gram of flour and a gram of sugar are both a gram. The ingredient only matters when you convert between weight and volume, for example grams to cups, because that depends on density.

Why does my scale show a different number from the conversion?

Usually because the bowl was not tared, the scale is set to the wrong unit, or the scale needs new batteries or recalibration. Tare the empty container, check the unit on the display, and test the scale with a known weight — a new 500 g bag of sugar is a convenient check.

Is 1 pound exactly 453.6 grams?

Yes, by international definition. The pound is defined as exactly 453.59237 g and the ounce as exactly 28.349523125 g, so the factor 453.6 is exact to the precision shown. The table rounds to a sensible number of decimals for kitchen use; the rounding error is a fraction of a gram at the amounts cooks actually weigh.

Should I weigh ingredients or use cups?

Weigh them, whenever the recipe allows it. Weight is more accurate than volume, especially for flour, which can vary by 20 g per cup depending on how it is measured. A digital kitchen scale that reads to 1 g costs less than a set of measuring cups and removes every conversion on this page from your cooking entirely.

How much should I round the result?

For soups, stews, roasts and everyday cooking, two significant figures are plenty — 28 g for an ounce, 454 g for a pound. For baking, keep one more figure (28.35 g, 453.59 g) because rounding five ingredients by a gram or two each can move a dough by 10 g. Round once, at the end, never at each step.

Related links