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Weight Converter

Convert between kg, pounds, ounces, grams, stone, and tons. Comprehensive weight and mass conversion tool for Canada.

✓ Multiple Units✓ Instant Conversion✓ Free Tool✓ All-in-One
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Weight Converter

How do I convert between weight units?

Convert between kilograms, pounds, ounces, grams, and stones using standard conversion factors. Main formulas: 1 kg = 2.20462 lb, 1 lb = 0.453592 kg, 1 lb = 16 oz, 1 kg = 1000 g. For example: 70 kg = 154.32 lb = 2469.14 oz. The converter handles all conversions automatically.

This universal weight converter supports multiple units and provides instant conversions using internationally recognized standards for accurate results.

This Universal Weight Converter converts between multiple weight units including kilograms, pounds, ounces, grams, and stones. It provides instant, accurate conversions following international measurement standards used in Canada.

Standards: International System of Units, Measurement Canada Standards, Multi-Unit Conversion

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Why Use This Converter?

Instant Results

See all conversions at once

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Shows Formula

Understand how each conversion works

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Understanding Weight Unit Conversion

Weight and mass measurements vary significantly around the world, with the metric system (kilograms and grams) used in Canada and most countries, while the imperial system (pounds and ounces) remains common in the United States. Understanding how to convert between these units is essential for cooking, fitness tracking, shipping, and international commerce.

This comprehensive weight converter supports all major units including kilograms, pounds, grams, ounces, stone, and tons. Each unit serves specific purposes: kilograms for general measurements, grams for precision, pounds for body weight, ounces for cooking, stone for UK contexts, and tons for heavy loads.

  • Metric units (kg, g, metric tons) are based on powers of 10, making them easy to convert
  • Imperial units (lb, oz, stone, tons) have historical origins and varied conversion factors
  • Canada uses metric officially, but imperial units are still encountered in daily life
How to Use This Weight Converter

Our comprehensive weight converter makes it easy to convert between any weight units. Whether you're following a recipe, tracking fitness progress, or calculating shipping costs, follow these simple steps.

1

Enter Weight Value

Type the weight value you want to convert. Select the unit you're converting from using the dropdown menu. You can convert from any supported unit.

2

Select Target Unit

Choose the unit you want to convert to from the dropdown menu. The conversion happens instantly, showing you the result in your desired unit.

3

View All Conversions

See your weight converted to all available units at once. This comprehensive view helps you understand the relationships between different weight measurements.

Common Uses for Weight Conversion
  • Converting recipe ingredients between metric and imperial measurements
  • Tracking body weight and fitness progress in different units
  • Calculating shipping weights for packages and freight
  • Understanding product weights when shopping internationally online
Key Weight and Mass Terms

Metric System

An international decimal system using kilograms and grams for mass. Based on powers of 10, making conversions straightforward. Official system in Canada and most countries.

Imperial System

A system of measurements including pounds, ounces, stone, and tons. Primarily used in the United States, with historical use in Canada and the United Kingdom.

Mass vs Weight

Mass is the amount of matter in an object (measured in kg or lb), while weight is the gravitational force acting on that mass. In everyday usage, both terms refer to the same thing.

Base Units

The kilogram is the SI base unit for mass. All other weight units can be converted to and from kilograms using specific conversion factors.

References & Sources

This calculator is based on the following authoritative sources and research:

1

The International System of Units (SI)

Bureau International des Poids et Mesures (BIPM) (2026)

View Source
2

Measurement Canada - Weight Standards

Government of Canada (2026)

View Source
3

National Research Council Measurement Standards

National Research Council Canada (2026)

View Source

Important Note: Weight conversions use internationally recognized standards. The converter provides accurate results for all practical applications including health tracking, cooking, shipping, and sports.

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Frequently Asked Questions

Common questions about weight and mass conversions