Weight Converter

Weight Converter - Free Online Weight and Mass Conversion Tool

Convert between all common weight and mass units instantly with our free online weight converter. Supported units include milligrams (mg), grams (g), kilograms (kg), metric tons (t), ounces (oz), and pounds (lb). Whether you are cooking, shipping packages, tracking fitness goals, or working on engineering calculations, this tool provides accurate conversions between metric and imperial weight systems with no registration required.

Weight and mass measurements differ across countries and industries. Most of the world uses the metric system with grams and kilograms as standard units, while the United States commonly uses pounds and ounces. Understanding how to convert between these systems is essential for international trade, following recipes from different countries, interpreting nutritional information, and many other everyday tasks.

How to Use This Weight Converter

1. Enter the weight value you want to convert in the input field.
2. Select the source unit from the "From" dropdown (e.g., Kilogram, Pound, Ounce).
3. Select the target unit from the "To" dropdown.
4. Click the "Convert" button to see the result immediately.
5. Adjust the value or change units at any time for additional conversions.

Key Weight Conversion References

• 1 kilogram (kg) = 1,000 grams (g) = 2.20462 pounds (lb)
• 1 pound (lb) = 453.592 grams (g) = 16 ounces (oz)
• 1 ounce (oz) = 28.3495 grams (g)
• 1 metric ton (t) = 1,000 kilograms (kg) = 2,204.62 pounds (lb)
• 1 milligram (mg) = 0.001 grams (g)
• 1 gram (g) = 0.03527 ounces (oz)

Weight vs. Mass: What Is the Difference?

In everyday language, "weight" and "mass" are often used interchangeably, but they are technically different. Mass is a measure of the amount of matter in an object and does not change regardless of location. Weight, on the other hand, is the force exerted on that mass by gravity and can vary depending on where you are (for example, you would weigh less on the Moon than on Earth, but your mass would remain the same). For practical purposes on Earth, the terms are treated as equivalent, and units like kilograms, grams, pounds, and ounces are used for both. Our converter works perfectly for all everyday weight and mass conversion needs.

Frequently Asked Questions

Q. How do I convert kilograms to pounds?

A. To convert kilograms to pounds, multiply the kilogram value by 2.20462. For example, 70 kg equals approximately 154.32 lbs, and 100 kg equals approximately 220.46 lbs. A quick mental shortcut is to double the kilogram value and add about 10% to get a rough estimate in pounds. For precise results, use our converter tool above.

Q. How many ounces are in a pound?

A. There are exactly 16 ounces in one pound. This means half a pound is 8 ounces, and a quarter pound is 4 ounces. In metric terms, one ounce is approximately 28.35 grams and one pound is approximately 453.59 grams. These conversions are especially useful when comparing food packaging labels between metric and imperial systems.

Q. What is the difference between a metric ton and a US ton?

A. A metric ton (also called a tonne) equals exactly 1,000 kilograms or approximately 2,204.62 pounds. A US ton (also called a short ton) equals 2,000 pounds or approximately 907.185 kilograms. There is also the imperial ton (long ton) used in the UK, which equals 2,240 pounds or approximately 1,016.05 kilograms. The metric ton is the most widely used internationally and is the unit supported by our converter.