Weight Converter

Free online weight converter. Easily convert between kilograms, pounds, ounces, grams, and more with our accurate and user-friendly tool.

Weight

Convert between different units of measurement

About Weight Conversion

Weight conversion is the process of changing a measurement from one unit of mass to another. The metric system uses kilograms as its base unit, while the imperial system uses pounds and ounces.

Common Weight Units

  • Metric: Milligram (mg), Gram (g), Kilogram (kg), Metric Ton (t)
  • Imperial/US: Ounce (oz), Pound (lb), Stone (st), US Ton (short ton)
  • Other: Carat (ct), Grain (gr), Atomic Mass Unit (u)

Conversion Formulas

  • 1 kilogram = 2.20462 pounds (exactly)
  • 1 pound = 16 ounces (exactly)
  • 1 ounce = 28.3495 grams (exactly)
  • 1 metric ton = 1000 kilograms
  • 1 stone = 14 pounds

Historical Context

Weight measurements have evolved throughout history. The metric system standardized mass measurements using the kilogram, defined by the International Prototype of the Kilogram. The imperial system's pound was historically based on various physical objects, but today is precisely defined in terms of the kilogram. The stone, commonly used in the UK, represents a traditional unit that's still in use today.

Common Weight Conversions

  • 1 kilogram = 2.20462 pounds
  • 1 pound = 16 ounces
  • 1 ounce = 28.3495 grams
  • 1 metric ton = 1000 kilograms
  • 1 stone = 14 pounds

How to Use the Weight Converter

  1. Choose your source and target weight units from the dropdown menus.
  2. Enter the weight value you want to convert in the input field.
  3. See your converted weight value instantly displayed on screen.

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Frequently Asked Questions

How do I perform a quick weight conversion?

Simply enter your value in the input field, select your source and target units from the dropdowns, and our converter will instantly show you the converted value.

Are the weight conversions accurate?

Yes, our converter uses precise mathematical formulas for each conversion to ensure you get accurate results every time. Our calculations are based on internationally recognized standards.

Can I use this weight converter offline?

Our converter is a web-based tool, but you can save our page for offline use in most browsers. For regular offline usage, we recommend installing our progressive web app by clicking "Add to Home Screen" in your browser menu.