Weight Converter

Convert weight between different units including kilograms, pounds, ounces, grams, stones, and more. Get precise conversions instantly.

Common Weight Conversions
1 kilogram (kg) = 2.20462 pounds (lb)
1 pound (lb) = 0.453592 kilograms (kg)
1 kilogram (kg) = 1000 grams (g)
1 pound (lb) = 16 ounces (oz)
1 stone (st) = 14 pounds (lb)
1 metric ton (t) = 1000 kilograms (kg)
1 ounce (oz) = 28.3495 grams (g)
1 carat (ct) = 0.2 grams (g)

How to Use the Weight Converter

  1. Enter the value you want to convert in the "Enter Value" field.
  2. Select the unit you're converting from in the "From Unit" dropdown.
  3. Select the unit you want to convert to in the "To Unit" dropdown.
  4. Click the "Convert" button to see the result.
  5. Use the "Swap Units" button to quickly reverse the conversion.
  6. Click on the copy icon next to any result to copy it to your clipboard.
About Weight Units

Weight (more accurately, mass) is a measure of the amount of matter in an object. Different weight units are used around the world for various purposes, from everyday measurements to scientific applications.

Metric Weight Units
  • Kilogram (kg): The base unit of mass in the International System of Units (SI). One kilogram is defined by the Planck constant.
  • Gram (g): Equal to 1/1000 of a kilogram. Commonly used for measuring food ingredients and small items.
  • Milligram (mg): Equal to 1/1000 of a gram. Used in medicine, nutrition, and scientific contexts.
  • Metric Ton (t): Equal to 1000 kilograms. Used for measuring large masses like vehicles or shipping cargo.
Imperial and US Weight Units
  • Pound (lb): The primary unit of weight in the imperial and US customary systems. Defined as exactly 0.45359237 kilograms.
  • Ounce (oz): Equal to 1/16 of a pound. Used for measuring smaller weights in cooking, postal services, etc.
  • Stone (st): Equal to 14 pounds. Commonly used in the UK and Ireland for measuring body weight.
  • US Ton (short ton): Equal to 2000 pounds. Used primarily in the United States.
  • UK Ton (long ton): Equal to 2240 pounds. Traditionally used in the United Kingdom.
Other Weight Units
  • Carat (ct): Equal to 0.2 grams. Used for measuring gemstones and pearls.
  • Grain (gr): Equal to 1/7000 of a pound. Used in firearms for measuring bullets and powder.
The kilogram is the only SI base unit that is defined by a physical object rather than a fundamental physical property. In 2019, it was redefined in terms of the Planck constant.

Common Use Cases

Professional Use

Perfect for developers, designers, and digital marketers who need quick results.

Education

Great for students and teachers for learning and verification.

Personal Projects

Simplify your personal tasks with this easy-to-use tool.

Everyday Tasks

Save time on routine calculations and conversions.

Frequently Asked Questions

Yes, Weight Converter is completely free to use. There are no hidden charges or subscriptions required.

Yes, your data is secure. All processing happens in your browser, and we do not store any of your input data on our servers.

Yes, Weight Converter is fully responsive and works perfectly on all devices, including smartphones and tablets.

Learn More About Weight Converter

A free online Weight Converter tool.

This tool is designed to be simple, fast, and effective. Whether you are a professional or just need a quick solution, Weight Converter is here to help. We continuously update our tools to ensure accuracy and better user experience.