Weight & Mass Converter
Convert weight and mass between kilograms, pounds, grams, ounces, tons, and more instantly.
📋 How to Use
- Enter the weight value you want to convert in the input field.
- Select the source unit (e.g., kilograms) from the dropdown.
- Select the target unit (e.g., pounds) from the second dropdown.
- The converted value appears instantly below.
- All equivalent values across all supported units are displayed simultaneously for reference.
About This Tool
Weight Converter — Convert Between All Weight Units Instantly
Weight conversions are needed in cooking, fitness, science, shipping, and international commerce. Our Weight Converter handles all common and scientific weight units with precision, giving you instant conversions in every direction.
Supported Weight Units
Metric system:
- Microgram (µg)
- Milligram (mg)
- Gram (g)
- Kilogram (kg)
- Metric ton / Tonne (t)
Imperial / US customary:
- Ounce (oz)
- Pound (lb)
- Stone (st) — used in the UK for body weight
- Short ton (US ton)
- Long ton (UK ton)
Other units:
- Carat (ct) — used for gemstones
- Troy ounce (troy oz) — used for precious metals
- Grain (gr) — used in pharmacy and ballistics
Common Weight Conversion Facts
- 1 kilogram = 2.20462 pounds
- 1 pound = 453.592 grams
- 1 stone = 14 pounds = 6.35 kg
- 1 metric ton = 1,000 kg = 2,204.62 lb
- 1 troy ounce = 31.1035 grams
- 1 carat = 0.2 grams
Use Cases
Cooking and baking: Convert between grams and ounces for international recipes. Convert metric cookbook measurements to US customary cups and tablespoons via weight.
Fitness and health: Convert your body weight between kilograms, pounds, and stones. Track weight loss progress across different measurement systems.
Shipping and logistics: Convert package weights between metric and imperial for international shipping rate calculations.
Science and chemistry: Work with precise measurements in milligrams, micrograms, and grams for laboratory applications.
Jewelry and gemstones: Convert between carats, grams, and troy ounces for precious stone and metal measurements.
Precious metals trading: Gold, silver, and platinum prices are quoted in troy ounces — convert to grams or kilograms for practical use.
Precision
All conversions use precise conversion factors with up to 10 significant figures to ensure accurate results for both everyday and scientific use.
Convert weight units now — free, instant, no sign-up.