Weight & Mass Converter

Convert between milligrams, grams, kilograms, metric tons, ounces, pounds, stones, and more instantly.

Value

From

Common Weight Conversions

From	To	Result
1 Kilogram	Pounds	2.20462 lb
1 Pound	Kilograms	0.453592 kg
1 Kilogram	Ounces	35.274 oz
1 Ounce	Grams	28.3495 g
1 Stone	Kilograms	6.35029 kg
1 Stone	Pounds	14 lb
1 Metric Ton	Kilograms	1,000 kg
1 Short Ton	Kilograms	907.185 kg

Frequently Asked Questions

One kilogram equals 2.20462 pounds. Conversely, one pound equals 0.453592 kilograms. The kilogram is the SI base unit of mass, while the pound is used in the US customary and imperial systems.

Mass is the amount of matter in an object (measured in kg or lb) and does not change with location. Weight is the force exerted on a mass by gravity and varies by planet or altitude. In everyday use these terms are used interchangeably, but scientifically they are different quantities.

A stone is a unit of weight used in the UK and Ireland equal to 14 pounds or 6.35029 kilograms. It is commonly used for body weight in the UK. So a person weighing 70 kg is approximately 11 stone.

A metric ton (tonne) = 1,000 kg = 2,204.62 lb. A short ton (US ton) = 2,000 lb = 907.185 kg. A long ton (UK ton) = 2,240 lb = 1,016.05 kg. The metric ton is used internationally; the short ton is common in the United States.

How It Works

Enter a Value

Type any weight value. The converter supports whole numbers, decimals, and scientific notation.

Select Units

Pick source and target weight units from the dropdowns. Use the swap button to reverse direction.

Instant Conversion

Results appear instantly using precise conversion factors from international standards.

Common Use Cases

Health & Fitness

Convert body weight between kilograms, pounds, and stones for fitness tracking, BMI calculations, and communicating with doctors in different countries.

Shipping & Logistics

Convert package weights between kilograms and pounds for international shipping rates, customs declarations, and airline baggage allowances.

Cooking & Recipes

Convert ingredient weights between grams, ounces, and pounds when using international recipes that specify different measurement systems.

Agriculture & Industry

Convert bulk commodity weights between metric tons and short tons for trading, pricing, and capacity calculations in industrial applications.

E-commerce

Convert product weights for international listings, ensuring accurate shipping cost calculations for customers in different countries.

Science & Education

Convert mass values between SI and imperial units for physics, chemistry, and engineering coursework or laboratory measurements.

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