# Pounds to Grams Converter URL: https://speedycalculator.com/calculators/conversion/lbs-to-g/ Last updated: 2026-10-25 > Convert pounds (lb) to grams (g): 1 pound = 453.59237 g, so multiply by 453.59237 or divide by 0.0022046226. Both fields are editable, so you can also type in grams and get pounds back. ## Inputs - Pounds (lb) ## Results - Grams ## Formula ``` 1 lb = 453.59237 g 1 g = 0.0022046226 lb g = lb × 453.59237 ``` ## Explanation One pound is exactly 453.59237 g. Recipes in pounds (a pound of butter, 2 lb of flour) convert to grams for a kitchen scale. ### How to use the Pounds to Grams Converter - Type the number of pounds into the **Pounds** field. Decimals such as 0.5 are fine. - Read the answer in **Grams** – it updates as you type, with no button to press. - To convert the other way, type into **Grams** and the pounds are recalculated. - Press **Copy results** to copy both values with the page title, or **Copy link** to share this exact conversion. This page converts only lb ⇄ g. Need a different unit? Use the general weight converter, where you can choose any “from” and “to” unit. ### How it works Both units measure weight, so they are always in the same ratio: one pound equals 453.59237 grams. The calculator multiplies the number of pounds you type by 453.59237 to give grams, and when you type into the grams field it divides by the same factor to give pounds. Because the ratio never changes, doubling the pounds always doubles the grams. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation). ### How to convert pounds to grams - Write down the value in pounds, for example **1 lb**. - Multiply by the conversion factor 453.59237 (because 1 pound = 453.59237 g). - 1 × 453.59237 = **453.59237 g**. - To go back from grams to pounds, divide by 453.59237 – or multiply by 0.0022046226. ### lb to g conversion table PoundsGramsGramsPounds0.25 lb113.39809 g1 g0.0022046226 lb0.5 lb226.79619 g2 g0.0044092452 lb0.75 lb340.19428 g5 g0.011023113 lb1 lb453.59237 g10 g0.022046226 lb1.5 lb680.38855 g20 g0.044092452 lb2 lb907.18474 g50 g0.11023113 lb2.5 lb1,133.9809 g100 g0.22046226 lb5 lb2,267.9619 g1,000 g2.2046226 lb10 lb4,535.9237 g ### What is a pound? The avoirdupois pound is defined as exactly 0.45359237 kg and is divided into 16 ounces. It is the everyday weight unit in the U.S. and is still widely used in the UK for body weight and food. ### What is a gram? A gram is one thousandth of a kilogram. Recipes, nutrition labels, postage and jewellery weights use grams in metric countries. ### Quick mental conversion For a fast estimate, multiply pounds by about **450** to get grams; the error is about 0.8%. Use the calculator above when you need the exact figure. ### Common mistakes to avoid Confusing fluid ounces (volume) with ounces (weight), using troy ounces for food or regular ounces for gold, and mixing u.s. short tons, uk long tons and metric tonnes. ## Worked example Inputs — Pounds: 1 lb. Results — **Grams = 453.59237 g**. ## FAQ **How many grams in a pound?** 453.59 g. **How many grams in half a pound?** About 226.8 g. **How do I convert pounds to grams?** Multiply the number of pounds by 453.59237. For example, 1 lb × 453.59237 = 453.59237 g. **How do I convert grams back to pounds?** Divide by 453.59237 (or multiply by 0.0022046226), or simply type the value into the grams field above. **What is 10 lb in grams?** 10 lb = 4,535.9237 g. **What is 5 lb in grams?** 5 lb = 2,267.9619 g. **Is this conversion exact?** Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit. **Can I convert to other units on this page?** This page converts only between pounds and grams. To pick any weight unit, use the general weight converter linked under Related calculators. **What formula does the Pounds to Grams Converter use?** 1 lb = 453.59237 g. ## Sources - [NIST Special Publication 811 – Guide for the Use of the International System of Units](https://www.nist.gov/pml/special-publication-811) - [NIST Handbook 44 Appendix C – General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)