Weight Converter
Convert between different weight units including kilograms, pounds, ounces, stones, grams, tons, and more. Get instant, accurate conversions with detailed explanations.
Weight Converter
How to Use the Weight Converter
- Enter Weight Value: Input the weight amount you want to convert
- Select Source Unit: Choose the unit you're converting from (kg, lbs, oz, etc.)
- Select Target Unit: Choose the unit you want to convert to
- View Results: See the converted value instantly with the conversion formula
- Check All Units: View conversions to all other available weight units
- Use Common Conversions: Reference the common conversion examples for quick calculations
Examples and Use Cases
Common Weight Conversions
Practical Applications
Understanding Weight Units
Metric System
Milligrams (mg)
Very small weights, medications, precious substances
Grams (g)
Small weights, cooking ingredients, jewelry
Kilograms (kg)
Standard metric weight, body weight, produce
Metric Tons (t)
Very heavy weights, vehicles, cargo
Imperial/US System
Grains (gr)
Bullets, arrows, precious metals, pharmaceuticals
Ounces (oz)
Food packaging, postal weights, precious metals
Pounds (lbs)
Most common imperial weight, body weight, produce
US/UK Tons
Heavy machinery, cargo, industrial applications
Special Units
Stones (st)
UK body weight measurement (14 pounds)
Hundredweight (cwt)
Agricultural and commercial weights
Conversion Accuracy
Results rounded to 5 decimal places for precision
Frequently Asked Questions
What's the difference between US and UK tons?
A US ton (short ton) equals 2,000 pounds, while a UK ton (long ton) equals 2,240 pounds. A metric ton equals 1,000 kilograms or about 2,204.6 pounds.
How accurate are these weight conversions?
Our converter uses official conversion factors and provides results accurate to 5 decimal places, which is more than sufficient for most practical applications.
What's the easiest way to convert kg to lbs?
To quickly estimate, multiply kilograms by 2.2. For example: 70 kg × 2.2 ≈ 154 lbs. For exact conversions, use our calculator which multiplies by 2.20462.
Why do some results show scientific notation?
Very large or very small numbers are displayed in scientific notation for clarity. For example, 1 gram = 1.00e+6 micrograms means 1,000,000 micrograms.
Can I convert between different measurement systems?
Yes! Our converter seamlessly converts between metric (kg, g, mg), imperial (lbs, oz, stones), and specialized units like grains and hundredweight.
What weight units are most commonly used?
Globally, kilograms and grams are most common. In the US, pounds and ounces are standard. The UK uses a mix of metric and imperial, including stones for body weight.
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