This converter turns a weight in grams into pounds, and into pounds and ounces, using the exact international conversion factor of 453.59237 grams per pound, the value fixed by the 1959 International Yard and Pound Agreement. It is useful whenever you are working from a metric scale or food label but need an imperial figure, for example when following a recipe from the United States or United Kingdom, checking a parcel's postal weight, or comparing body weight readings. Type any weight into the grams field, or choose from the quick presets covering common weights from a single paperclip through to five kilograms, and pick how many decimal places you want in the answer, from two up to six. The calculator instantly returns three results: the weight as a decimal figure in pounds, the same weight split into whole pounds and remaining ounces, and the total weight expressed purely in ounces. Below the results, a conversion breakdown shows each step of the maths, and a worked example walks through a 100 gram conversion in full, followed by a reference table listing pounds and ounces equivalents for common gram weights. Because the 453.59237 gram figure is an exact legal definition rather than a rounded approximation, every result is precise to the decimal place you select, making this suitable for cooking, shipping, or everyday reference.
Select a preset to populate the grams field, or type any value directly.
| Grams (g) | Pounds (lbs) | Pounds and Ounces | Ounces only (oz) |
|---|
To convert grams to pounds, divide the number of grams by 453.59237. This conversion factor is exact by international definition: since 1959 the pound has been defined as exactly 453.59237 grams under the International Yard and Pound Agreement, adopted by the United States, United Kingdom, Australia, Canada, New Zealand, and South Africa.
The formula is:
pounds = grams / 453.59237
For example, 500 grams / 453.59237 = 1.1023 lbs.
If you need the result in pounds and ounces rather than decimal pounds:
New Zealand uses the metric system, so food labels, postal weights, and scientific measurements are given in grams and kilograms. However, pounds are still widely understood, particularly in cooking recipes from the United States and United Kingdom, and in body weight discussions where some people use the imperial system. Common reference points:
| Grams | Pounds (decimal) | Pounds and Ounces | Common context |
|---|---|---|---|
| 28.35 g | 0.0625 lb | 0 lb 1 oz | One ounce (exact: 28.3495 g) |
| 100 g | 0.2205 lb | 0 lb 3.527 oz | Small food portion |
| 250 g | 0.5512 lb | 0 lb 8.818 oz | Butter block, meat portion |
| 454 g | 1.0009 lb | 1 lb 0.01 oz | Approximately 1 pound |
| 500 g | 1.1023 lb | 1 lb 1.637 oz | Half a kilogram |
| 1,000 g | 2.2046 lb | 2 lb 3.274 oz | One kilogram |
| 2,000 g | 4.4092 lb | 4 lb 6.548 oz | Two kilograms |
| 5,000 g | 11.0231 lb | 11 lb 0.37 oz | Five kilograms |
The value 453.59237 grams per pound is exact by legal definition, not a measured approximation. Before 1959, slightly different values were used in different countries (the US pound was 453.59243 g and the UK pound was 453.59237 g). The 1959 International Yard and Pound Agreement standardised the pound at 453.59237 grams to 8 significant figures, and that value has been in force ever since. The gram itself is defined via the kilogram, which since 2019 is defined by fixing the Planck constant, making the entire chain of definitions exact in SI units.
Sources and method: International Yard and Pound Agreement 1959. SI base unit definitions via BIPM (bipm.org). Conversion factor: 1 lb = 453.59237 g exactly.
This converter uses the exact international pound definition (453.59237 g). Results are accurate to the precision selected. For scientific or legal purposes, verify with your applicable standard.
100 grams is equal to 0.2205 pounds (lbs), or approximately 3.527 ounces. The exact conversion is 100 / 453.59237 = 0.220462 lbs. This is a common weight for small food items, spice packets, and ingredients.
The exact formula is: pounds = grams / 453.59237. This is the internationally agreed value defined in 1959 by the International Yard and Pound Agreement. Since 1 pound equals exactly 453.59237 grams, dividing the gram value by 453.59237 gives pounds. To also get ounces, take the decimal part of the pounds result and multiply by 16.
First divide grams by 453.59237 to get total pounds as a decimal. The whole-number part is the pounds. Multiply the remaining decimal by 16 to get ounces. For example, 500 g / 453.59237 = 1.1023 lbs. The whole-number part is 1 lb. The decimal 0.1023 x 16 = 1.637 oz. So 500 g = 1 lb 1.64 oz.
If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.
Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.
Calculate.co.nz is the sister site of CalculatorHub.com, the world's largest calculator website by tool count.
All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.
Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.
Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.
Calculate.co.nz is hosted in Auckland by SiteHost New Zealand.
All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.
About & trust: Why Calculate is NZ's most comprehensive · By the Numbers · How we compare · Editorial standards · How we keep data current · NZ finance glossary · Research & data · Financial literacy NZ · About · Privacy policy · Terms of use
Reviewed and maintained. Last reviewed 2026-08-15 and checked on a twice-monthly cycle against IRD, RBNZ and Stats NZ. How we keep data current.
© 2026 Calculate.co.nz. All rights reserved. Building free NZ calculators since 2011.