How many kilograms are in a pound?

1 pound equals 0.453592 kilograms. To convert pounds to kg, multiply the pound value by 0.453592. For example, 10 pounds = 10 × 0.453592 = 4.53592 kg.

How do I convert ounces to grams?

To convert ounces to grams, multiply the ounce value by 28.3495. For example, 8 ounces = 8 × 28.3495 = 226.796 grams. This is because 1 ounce equals 28.3495 grams.

What is a stone in weight measurement?

A stone is a unit of weight equal to 14 pounds or 6.35029 kilograms. It's commonly used in the UK and Ireland for measuring body weight.

Is this weight converter accurate for scientific use?

Yes, our converter uses precise conversion factors and supports up to 10 decimal places. It's suitable for scientific, medical, and commercial applications where accuracy is important.

Weight Converter

Convert between pounds, kilograms, ounces, grams and more with instant results and high precision. Perfect for cooking, shipping, fitness tracking and scientific applications.

Weight Conversion Calculator

Convert between metric and imperial weight units with high precision

From

Decimal Places: 6

Key Features

Instant conversion between metric and imperial weight units

High precision calculations with adjustable decimal places (0-10)

Supports all major units: kg, lbs, oz, stones, tons

Perfect for cooking, shipping, fitness, and scientific use

Understanding Weight

Metric System: Based on kilograms (kg) and grams (g). 1 kg = 1,000 g, widely used globally

Imperial System: Uses pounds (lbs) and ounces (oz). 1 lb = 16 oz, common in US and UK

Stone (st): British unit equal to 14 pounds, traditionally used for body weight in UK/Ireland

Tons: Metric ton (1,000 kg), US ton (2,000 lbs), Imperial ton (2,240 lbs) - used for heavy objects

Tips & Strategies

Quick Mental Math: 1 kg ≈ 2.2 lbs, 1 lb ≈ 450g, 1 oz ≈ 28g for rough estimates

Cooking Conversions: Use grams for baking precision, ounces for US recipes, ml to grams: 1:1 for water

Shipping Guidelines: Use kg for international shipping, lbs for domestic US, check weight limits carefully

Body Weight Tracking: Use consistent units - kg internationally, lbs in US, stones in UK traditionally

Precision Settings: Use 0-1 decimals for daily use, 2-3 for cooking, 4+ for scientific measurements

Common Mistakes: Don't confuse US tons (2,000 lbs) with metric tons (1,000 kg) in calculations

Scientific Use: Always use metric units (g, kg) for lab work and scientific documentation

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Frequently Asked Questions

What's the difference between mass and weight?

Mass is the amount of matter in an object (measured in kg or lbs), while weight is the force exerted by gravity on that mass. In everyday use, we often use these terms interchangeably, and our converter works for both concepts.

Why are there different types of tons?

There are three main types: metric tons (1,000 kg), US tons (2,000 lbs), and imperial tons (2,240 lbs). The metric ton is most common internationally, while US tons are used in American commerce.

How accurate are these conversions?

Our converter uses official conversion factors defined by international standards. The precision can be adjusted up to 10 decimal places, making it suitable for both everyday use and scientific applications.

What is a stone and where is it used?

A stone is a British imperial unit equal to 14 pounds or about 6.35 kg. It's commonly used in the UK and Ireland for measuring body weight. For example, someone might weigh "11 stone 3 pounds" instead of "157 pounds."

Which weight unit should I use for cooking?

Use grams for baking precision (especially flour, sugar), ounces for US recipes, and kilograms for large quantities. Digital kitchen scales often display both grams and ounces simultaneously.

How do I convert between pounds and kilograms quickly?

For quick estimates: pounds to kg, divide by 2.2 or multiply by 0.45. For kg to pounds, multiply by 2.2. Example: 150 lbs ÷ 2.2 ≈ 68 kg, or 70 kg × 2.2 ≈ 154 lbs.

What's the best precision setting for different uses?

Use 0-1 decimals for daily weight (body weight, luggage), 2-3 for cooking and recipes, 4-6 for scientific measurements or precious materials like gold and medications.

How much does a gallon of water weigh?

A US gallon of water weighs about 8.34 lbs (3.78 kg), while an Imperial gallon weighs about 10 lbs (4.54 kg). This is useful for calculating liquid shipping weights and container capacities.