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⚖️ Weight Unit Converter

⚡ Quick Conversions

1 kg → lb
1 lb → kg
1 g → oz
1 oz → g
100 g → lb
1 t → ton
1 st → kg
1 ct → g

⚖️ Common Weight Conversions

📊 Metric ↔ Imperial Conversions

🌍 Metric to Imperial

  • 1 kilogram 2.205 pounds
  • 1 gram 0.0353 ounces
  • 1 metric ton 2204.6 pounds
  • 1 metric ton 1.102 US tons
  • 100 grams 3.527 ounces

🇺🇸 Imperial to Metric

  • 1 pound 453.6 grams
  • 1 ounce 28.35 grams
  • 1 stone 6.35 kilograms
  • 1 US ton 907.2 kilograms
  • 1 US ton 0.907 metric tons

💎 Precious Metals & Gems

  • 1 troy ounce 31.1 grams
  • 1 carat 0.2 grams
  • 1 pennyweight 1.555 grams
  • 1 grain 0.0648 grams
  • 1 tola 11.664 grams

🍳 Cooking & Kitchen

  • 1 cup flour 120 grams
  • 1 cup sugar 200 grams
  • 1 cup butter 225 grams
  • 1 tablespoon 15 grams
  • 1 teaspoon 5 grams

🧮 Conversion Formulas

⚖️ Basic Weight Conversion Formulas

Metric Conversions

kilograms = grams ÷ 1000
grams = milligrams ÷ 1000
metric_tons = kilograms ÷ 1000
milligrams = grams × 1000

Imperial Conversions

pounds = ounces ÷ 16
stones = pounds ÷ 14
tons = pounds ÷ 2000
ounces = pounds × 16

Metric ↔ Imperial

pounds = kilograms × 2.20462
kilograms = pounds ÷ 2.20462
ounces = grams × 0.035274
grams = ounces × 28.3495

Precious Metals & Gems

troy_ounces = grams ÷ 31.1035
carats = grams ÷ 0.2
grains = grams ÷ 0.06479891
pennyweights = grams ÷ 1.55517

📋 Real-World Examples

🍳 Cooking & Baking

Recipe conversions, ingredient measurements, portion control. Essential for chefs, bakers, and home cooks working with international recipes and different measurement systems.

💊 Medical & Pharmacy

Medication dosages, patient weight monitoring, laboratory measurements. Critical for healthcare professionals, pharmacists, and medical researchers.

💎 Jewelry & Precious Metals

Gold and silver trading, gemstone weights, jewelry making. Important for jewelers, traders, and precious metal dealers working with troy ounces and carats.

🏋️‍♀️ Fitness & Health

Body weight tracking, equipment weights, nutritional planning. Used by fitness trainers, nutritionists, and health-conscious individuals.

🚚 Shipping & Logistics

Package weights, cargo calculations, shipping costs. Essential for logistics companies, shipping departments, and international trade.

🔬 Science & Research

Laboratory measurements, chemical quantities, research data. Critical for scientists, researchers, and laboratory technicians.

🏭 Manufacturing & Industry

Raw material quantities, product weights, quality control. Important for manufacturers, engineers, and quality assurance teams.

🌾 Agriculture & Farming

Crop yields, livestock weights, fertilizer amounts. Used by farmers, agricultural engineers, and food production managers.

📖 Weight Measurement Guide

Understanding Weight vs. Mass

While often used interchangeably, weight and mass are different concepts. Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass. In everyday use, we typically refer to both as "weight."

Metric System (SI Units)

The metric system provides a decimal-based system for weight measurements:

  • Metric Ton (t): 1,000 kilograms - heavy cargo, industrial materials
  • Kilogram (kg): Base unit for mass - body weight, food packages
  • Gram (g): 1/1,000 kilogram - small items, cooking ingredients
  • Milligram (mg): 1/1,000 gram - medications, precision measurements
  • Microgram (μg): 1/1,000,000 gram - vitamins, trace elements

Imperial System

The imperial system uses traditional units, primarily in the United States and UK:

  • Ton (US): 2,000 pounds - heavy machinery, cargo
  • Stone (st): 14 pounds - body weight (UK)
  • Pound (lb): 16 ounces - body weight, food items
  • Ounce (oz): 1/16 pound - small food portions, liquids
  • Dram (dr): 1/16 ounce - very small measurements

Specialized Units

Unit Symbol Equivalent Common Use
Troy Ounce oz t 31.1035 g Precious metals, coins
Carat ct 0.2 g Gemstones, diamonds
Grain gr 0.0648 g Ammunition, pharmaceuticals
Pennyweight dwt 1.555 g Precious metals, jewelry
Tola - 11.664 g Gold trading (South Asia)

Conversion Tips

  • Memorize key conversions: 1 kg = 2.2 lbs, 1 oz = 28.35 g
  • Use kitchen scales: Digital scales provide accurate measurements
  • Consider context: Body weight vs. cooking vs. scientific measurements
  • Check precision needs: Medical dosages require high precision
  • Understand regional differences: US vs. Imperial tons differ

Common Mistakes to Avoid

  • Confusing US tons (2,000 lbs) with metric tons (1,000 kg)
  • Using regular ounces instead of troy ounces for precious metals
  • Ignoring precision requirements in medical or scientific contexts
  • Mixing weight and volume measurements in cooking
  • Not accounting for local measurement preferences

Professional Applications

  • Healthcare: Patient monitoring, medication dosing, medical devices
  • Food Industry: Recipe scaling, nutrition labeling, portion control
  • Manufacturing: Quality control, material specifications, shipping
  • Precious Metals: Trading, jewelry making, investment
  • Science: Laboratory work, chemical reactions, research