Use our comprehensive weight converter tool to convert between kilograms, pounds, ounces, grams, and stones. Calculate your BMI with health categories, compare weights to common objects, estimate shipping costs, and access industry-specific weight standards—perfect for health tracking, shipping calculations, cooking, and professional use.
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When converting weights, it's important to understand the different measurement systems used around the world. The metric system is used by most countries, while the imperial system is primarily used in the United States.
Troy Ounce: Used for precious metals (31.1035 grams) • Carat: Used for gemstones (0.2 grams) • Grain: Used for bullets and arrows (0.0648 grams)
Convert between metric, imperial, troy, and specialized weight units with precision
Calculate Body Mass Index with automatic category classification and health insights
Visualize weights by comparing to common objects, animals, and vehicles
Get instant shipping cost estimates based on package weight and dimensions
- Dr. Sarah Chen, Nutritionist“This weight converter is incredibly accurate for dietary planning. The food portion comparisons help clients visualize their intake better.”
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Try Time Converter →For cooking: 1 cup of flour ≈ 120g, 1 cup of sugar ≈ 200g
Healthy BMI range: 18.5-24.9 for adults
Standard luggage weight: 23kg (50lb) for most airlines
Use comparison tool to visualize abstract weights