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Last updated: 2026-03-08

Weight Converter

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Body Weight (US)

Body Weight (Metric)

Package Weight

Weight Conversion Reference

This converter handles the most common weight and mass units used worldwide. All conversions go through grams as the base unit.

1 lb = 453.592 g = 0.4536 kg

1 kg = 2.2046 lb = 35.274 oz

1 oz = 28.3495 g

1 st = 14 lb = 6.3503 kg

Pounds and ounces are used in the US and UK for everyday weight. Kilograms and grams are the metric standard used worldwide. Stones are commonly used for body weight in the UK and Ireland (1 stone = 14 pounds).

Weight conversion FAQs

Answers to common questions about weight and mass units.

What is the quick way to convert kg to lbs?

Multiply by 2.2. Example: 70 kg × 2.2 = 154 lbs. For more precision, multiply by 2.2046.

What is a stone?

A stone is a unit of weight equal to 14 pounds (6.35 kg). It's commonly used in the UK and Ireland for measuring body weight. For example, 150 lbs ≈ 10 stone 10 lbs.

Is there a difference between weight and mass?

Technically yes — mass is the amount of matter (measured in kg), while weight is the force of gravity on that mass (measured in Newtons). In everyday use, the terms are interchangeable since we're all on Earth.

Why does the US use pounds instead of kilograms?

The US uses the imperial/customary system inherited from British colonial times. While most countries adopted the metric system, the US retained its traditional units for everyday use, though metric is standard in science and medicine.

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Disclaimer

This tool provides approximate conversions and estimates for informational purposes. Verify critical values with authoritative sources.

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