Weight & Mass Converter

Mass is the amount of matter in an object (measured in kilograms), while weight is the force gravity exerts on that mass (measured in newtons). However, in everyday conversions, "weight" units like pounds and kilograms are often used interchangeably. Our converter handles both mass and weight units for practical purposes.

Recipes vary because countries use different measurement systems: metric countries use grams and kilograms, while the US uses ounces and pounds. This stems from historical measurement standards. Converting recipe weights accurately is crucial for baking, where precision affects texture and taste.

A troy ounce (used for precious metals) weighs 31.1035 grams, while a regular (avoirdupois) ounce weighs 28.3495 grams. Troy ounces are about 10% heavier. This distinction is crucial when buying gold, silver, or other precious metals, as prices are quoted in troy ounces.

Essential cooking conversions include: 1 pound = 453.592 grams, 1 ounce = 28.35 grams, 1 kilogram = 2.205 pounds. For baking precision, use grams when possible, as they're more accurate than cups or tablespoons. Professional chefs prefer weight measurements over volume for consistency.

International shipping uses kilograms as the standard, but domestic services may use pounds. Common limits include 20kg (44 lbs) for standard international packages and 30kg (66 lbs) for express services. Understanding these conversions helps avoid shipping surcharges and ensures package acceptance.

One carat equals exactly 0.2 grams or 200 milligrams. This standard was established internationally for gemstone trading. So a 5-carat diamond weighs exactly 1 gram. This precise relationship is crucial for jewelry valuation and international gem trade.