Weight Converter

Switch between kilograms, pounds, ounces, grams, metric and US/UK tons, and stones. Use it for recipe conversions, shipping weights, or any metric-imperial weight comparison; no account needed.

Smart Tips

• Metric weight units (grams, kilograms) are based on powers of 10 for easy conversion

• 1 kilogram equals approximately 2.205 pounds - useful for quick mental conversions

• Stone is commonly used in the UK for body weight (1 stone = 14 pounds = 6.35 kg)

• For cooking, remember that 1 ounce = 28.35 grams for accurate recipe conversions

The Formula

Converted Weight = Original Weight × Conversion Factor

Original Weight = Weight in source unit
Input measurement value

Conversion Factor = Unit conversion ratio
e.g., 1 kg = 2.20462 lb

Converted Weight = Result in target unit
Metric uses base-10, Imperial uses specific ratios

Weight Conversion Reference

Unit	Conversion
Kilogram (kg)	Base metric unit, 1 kg = 1,000 g = 2.20462 lb
Gram (g)	1 g = 0.001 kg = 0.035274 oz
Pound (lb)	1 lb = 0.453592 kg = 16 oz
Ounce (oz)	1 oz = 0.0283495 kg = 0.0625 lb
Stone (st)	1 st = 6.35029 kg = 14 lb
Metric Ton (t)	1 t = 1,000 kg = 2,204.62 lb

Key Insights

Metric System

The metric system (grams, kilograms, metric tons) is used worldwide and based on powers of 10 for easy conversion.

Imperial System

The imperial system (ounces, pounds, tons) is primarily used in the United States and requires specific conversion factors.

Precision Matters

Choose the appropriate unit for your measurement - use grams for precision, kilograms for everyday use, tons for large weights.

Common Conversions

1 pound = 0.4536 kg, 1 ounce = 28.35 g, 1 ton = 1000 kg are among the most frequently used conversions.

Frequently Asked Questions

Select your input unit, enter the value, choose your target unit, and our converter will instantly provide the converted value. All conversions use standard conversion factors for accuracy.

Metric units (kilograms, grams) are based on the decimal system, while imperial units (pounds, ounces) use traditional measurements. Our converter handles both systems seamlessly.

Our converter uses precise conversion factors and provides accurate results to multiple decimal places. All conversions are based on official international standards and definitions.

Yes, our converter supports conversions between metric (kilograms, grams) and imperial (pounds, ounces) units, making it perfect for international projects and travel.

We support kilograms, grams, milligrams, micrograms, pounds, ounces, metric tons, short tons, long tons, stones, grains, carats, troy ounces, and troy pounds. The converter handles both common and specialized weight measurements.

Our weight conversions are based on International System of Units (SI) mass standards, National Institute of Standards and Technology (NIST) weight conversion guidelines, and metric and imperial conversion factors.

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Converted Weight

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Note: Weight conversions use standard factors between metric and imperial units. For regulated/medical use, verify conversions against an authoritative source.