Calculator.pro

Weight Converter

Convert weight between different units including kilograms, pounds, ounces, stone, and more.

Quick Examples

Enter the weight value you want to convert
Select the unit you want to convert from
Select the unit you want to convert to

About This Calculator

This weight converter allows you to easily convert between different weight measurement units from around the world: • Metric units: kilograms (kg), grams (g), milligrams (mg), metric tons • Imperial/US units: pounds (lb), ounces (oz), stone (st), US tons Whether you're following a recipe from another country, tracking your fitness goals, working on a science project, or calculating shipping weights, this calculator provides accurate and instant conversions between all common weight units. Simply enter a weight value, select the unit you're converting from and the unit you want to convert to, and get immediate results along with a comprehensive conversion table.

Frequently Asked Questions

How do I convert kilograms to pounds?

To convert kilograms to pounds, multiply the kilogram value by 2.20462. For example, 10 kg × 2.20462 = 22.0462 pounds. You can also use our calculator for an instant and precise conversion.

How do I convert pounds to kilograms?

To convert pounds to kilograms, divide the pound value by 2.20462 (or multiply by 0.45359237). For example, 20 pounds ÷ 2.20462 = 9.07 kilograms. Our calculator performs this conversion automatically.

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

A metric ton (tonne) is equal to 1,000 kilograms or 2,204.62 pounds. A US ton (also called a short ton) is equal to 2,000 pounds or 907.18 kilograms. There's also an Imperial/UK ton (long ton) which equals 2,240 pounds or 1,016 kilograms.

What is a stone and how is it used?

A stone (st) is a unit of weight used primarily in the United Kingdom and Ireland that equals 14 pounds or 6.35 kilograms. It's commonly used to express human body weight, where a person might say they weigh "11 stone 4 pounds" (158 pounds or 71.7 kg).

Why are there different weight measurement systems?

Different weight measurement systems evolved separately across regions and throughout history. The metric system (kilograms, grams) was developed in France in the late 18th century as a standardized decimal system. The imperial system (pounds, ounces) evolved from earlier Roman and Anglo-Saxon measurements. Today, most countries use the metric system officially, while the US still commonly uses imperial units.

Which countries use pounds and which use kilograms?

Most countries in the world use kilograms as their primary weight measurement as part of the metric system. The United States is the main country that still primarily uses pounds (imperial system). The United Kingdom uses a mix, with body weight often measured in stones and pounds, but most other weights given in kilograms.