Weight Converter
Convert between different units of weight and mass with precision and ease.
Weight Converter
Instant conversion between weight units
⚡ Popular Conversions
About Weight Conversion
Metric System
Decimal-based mass measurement system.
- • Microgram (μg) - 10⁻⁶ g
- • Milligram (mg) - 0.001 g
- • Gram (g) - Base unit
- • Kilogram (kg) - 1,000 g
- • Metric Ton (t) - 1,000 kg
Imperial System
Traditional weight units used in US/UK.
- • Grain (gr) - 64.79891 mg
- • Ounce (oz) - 28.3495 g
- • Pound (lb) - 453.592 g
- • Stone (st) - 14 pounds
- • Short Ton - 2,000 lbs
Troy Weight
Used for precious metals and gems.
- • Troy Grain - Same as grain
- • Pennyweight (dwt) - 24 grains
- • Troy Ounce (oz t) - 31.1035 g
- • Troy Pound (lb t) - 12 troy oz
Asian Units
Traditional Asian weight measurements.
- • Tael - ~37.8 g (varies)
- • Catty - ~604.8 g
- • Picul - ~60.48 kg
- • Apothecary - Medical units
Understanding Weight Units
Weight and mass are fundamental physical properties that describe the amount of matter in an object, measured in grams (g) as the base metric unit. Understanding weight conversions is crucial for cooking, shipping, scientific research, medicine, and international trade where precise measurements ensure accuracy and compliance.
The metric system provides intuitive weight measurements with clear decimal relationships. From micrograms used in pharmaceutical dosing to metric tons for industrial materials, the consistent scaling by factors of 10 simplifies calculations and reduces errors in scientific and commercial applications.
Imperial weight units include ounces, pounds, and tons that remain essential in the United States and specific industries worldwide. Converting between systems requires precise factors: 1 pound equals 453.592 grams, and 1 ounce equals 28.35 grams, critical for international shipping and recipe conversions.
Specialized weight systems serve unique purposes. Troy weight measures precious metals with different conversion factors than standard avoirdupois weight. Apothecary units historically measured medications, while carat measurements specify gemstone and precious metal purity in jewelry and trading markets.
Modern applications demand exceptional weight measurement precision. Laboratory balances achieve microgram accuracy for chemical analysis, postal systems require exact gram measurements for shipping costs, and medical dosing depends on precise weight conversions to ensure patient safety and treatment efficacy across diverse healthcare settings.