Weight Converter - kg to lbs, grams to ounces
Convert between kilograms, pounds, grams, ounces, and stones instantly. Perfect for cooking and body weight measurements.
How to Use the Weight Converter
- Select Source Unit: Choose the weight unit you're converting from (kilograms, pounds, grams, ounces) from the "From" dropdown.
- Enter Weight Value: Type the weight measurement you want to convert. Supports whole numbers and decimals for precise conversions.
- Choose Target Unit: Select the weight unit you want to convert to from the "To" dropdown menu.
- View Converted Weight: See your converted weight instantly. Perfect for cooking recipes, body weight tracking, or shipping calculations.
Weight Conversion Formulas
Kilograms to Pounds
lbs = kg × 2.20462Example: 10 kg = 10 × 2.20462 = 22.046 lbs
Pounds to Kilograms
kg = lbs ÷ 2.20462Example: 20 lbs = 20 ÷ 2.20462 = 9.072 kg
Grams to Ounces
oz = grams ÷ 28.3495Example: 100 grams = 100 ÷ 28.3495 = 3.527 oz
Weight Conversion Reference Table
| Metric | Imperial | Conversion Factor | Common Use |
|---|---|---|---|
| 1 gram | 0.035 oz | × 0.035 | Small items, spices |
| 100 grams | 3.527 oz | × 0.035 | Food portions |
| 1 kg | 2.205 lbs | × 2.205 | Body weight, produce |
| 1 pound | 0.454 kg | × 0.454 | US weight standard |
| 1 stone | 6.35 kg | × 6.35 | UK body weight |
| 1 ton (US) | 907 kg | × 907 | Heavy weights |
Real-World Weight Conversion Examples
Body Weight Tracking
Convert body weight between kilograms (used globally) and pounds (used in US). A person weighing 70 kg equals approximately 154 lbs, which helps track fitness progress across different measurement systems.
Cooking Recipes
Convert ingredient weights for international recipes. European recipes use grams, while American recipes often use ounces and pounds. Essential for accurate baking and cooking.
Shipping & Packages
Calculate package weights for international shipping. Most carriers use kilograms, while USPS uses pounds. Critical for calculating shipping costs and avoiding overweight fees.
Grocery Shopping
Compare product weights when shopping. Many products show both metric (grams/kg) and imperial (oz/lbs) weights. Helps you find the best value and understand package sizes.
Understanding Weight Measurement Systems
Understanding Weight vs Mass
Weight and mass are often used interchangeably in everyday language, but technically mass measures the amount of matter (constant), while weight measures the force of gravity (varies by location). For practical purposes, we use them the same way in conversions, but scientists distinguish between them.
Metric Weight System
The metric system uses grams as the base unit, with prefixes: milligram (0.001g), gram (1g), kilogram (1000g), and metric ton (1,000,000g). This decimal system makes conversions simple - just move the decimal point.
Imperial Weight System
The imperial system uses ounces and pounds, with 16 ounces equaling 1 pound. The stone (14 pounds) is used in the UK for body weight. The US ton (2000 lbs) differs from the metric ton, which can cause confusion in international trade.
Weight Conversion Tips
- 1 kilogram equals approximately 2.2 pounds (memorize this for quick mental math)
- For cooking, 1 pound of flour equals about 450 grams (useful for recipe conversions)
- Body weight: 1 stone (UK) = 14 pounds = 6.35 kilograms (common in UK/Ireland)
- When shipping internationally, always convert to the destination country's standard unit
- Precision matters: use exact conversions for scientific work, approximate for everyday use