What is a Weight Converter?
The Weight Converter is a versatile online tool designed to help you quickly and accurately convert between different units of weight and mass. Whether you're cooking, shipping packages, working in science, or dealing with precious metals, this tool provides instant conversions across all major measurement systems.
Our converter supports a comprehensive range of units, including metric (kilograms, grams, milligrams, tons), imperial (pounds, ounces, stones), and specialized units like carats for jewelry and troy ounces for precious metals. Perfect for everyday use, professional applications, and scientific calculations.
Key Features:
- Comprehensive Unit Support: 18+ units including metric (kg, g, mg, t), imperial (lb, oz, st, ton), traditional (carat, troy oz, grain), and scientific (atomic mass unit)
- Instant Conversions: Real-time results as you type with no delays
- Adjustable Precision: Control decimal places from 1 to maximum precision for your specific needs
- Quick Conversion Shortcuts: One-click conversions for common pairs (kg↔lb, g↔oz)
- Scientific Notation: Toggle between decimal and scientific notation for very large or small values
- Privacy First: All conversions happen locally in your browser—no data sent to servers
Perfect For: Home cooks, professional chefs, scientists, jewelers, fitness enthusiasts, shipping logistics, international trade, and anyone needing accurate weight conversions between different measurement systems.
Frequently Asked Questions
What's the difference between weight and mass?
Mass is the amount of matter in an object (measured in kg, g, etc.), while weight is the force gravity exerts on that mass. In everyday use, the terms are often used interchangeably. Our converter handles mass units, which is what most people need for cooking, shipping, and general measurements.
How do I convert pounds to kilograms?
To convert pounds (lb) to kilograms (kg), multiply by 0.453592. For example, 10 lb = 10 × 0.453592 = 4.536 kg. Our converter does this calculation instantly—just enter your value and select the units.
What's the difference between troy ounce and regular ounce?
A troy ounce (31.1035 g) is used for precious metals like gold and silver, while a regular (avoirdupois) ounce (28.3495 g) is used for everyday items. Troy ounces are about 10% heavier than regular ounces.
How accurate is the weight converter?
Our converter uses precise conversion factors from international standards (NIST, ISO) and provides adjustable precision up to 15 decimal places. The accuracy is suitable for both everyday use and scientific applications.
Can I convert between metric tons and imperial tons?
Yes! Metric tons (1000 kg), US tons (2000 lb), and UK tons (2240 lb) are all supported. A metric ton equals approximately 1.102 US tons or 0.984 UK tons.