Weight Converter
Convert weight units
Weight Converter
Convert between metric and imperial weight units
Converted Weight
About Weight Converter
The Weight Converter is a comprehensive tool for converting between different weight measurement units. It handles milligrams, grams, kilograms, tonnes, ounces, pounds, and stones.
Weight conversion is essential in many fields: Cooking and baking (recipe scaling), Fitness and health (body weight tracking), Shipping and logistics (package weights), Science and laboratory work, International trade and commerce.
Our converter supports 7 weight units with high precision (6 decimal places). Whether you're converting kitchen measurements, tracking your fitness progress, or calculating shipping weights, you'll get accurate results instantly.
How to Use This Weight Converter
Step 1: Enter the weight value you want to convert.
Step 2: Select the "From" unit (milligram, gram, kilogram, tonne, ounce, pound, or stone).
Step 3: Select the "To" unit (milligram, gram, kilogram, tonne, ounce, pound, or stone).
Step 4: Click "Convert" to see the result.
Step 5: Use "Swap" (🔄) to quickly reverse the conversion.
Step 6: Use Reset to clear all inputs and start over.
Why Use a Weight Converter?
✓ Cooking & Baking
Convert recipes between grams, ounces, and pounds. Perfect for following international recipes with precision.
✓ Fitness & Health
Track your body weight in kilograms, pounds, or stones. Convert between units for fitness goals and progress tracking.
✓ Shipping & Logistics
Calculate package weights in different units. Convert between metric and imperial for international shipping.
✓ Science & Education
Perfect for students and scientists working with weight and mass. Accurate conversions for experiments and calculations.
Common Weight Conversions
| From | To | Multiply By |
|---|---|---|
| 1 Kilogram | Pounds | 2.20462 |
| 1 Pound | Kilograms | 0.453592 |
| 1 Gram | Ounces | 0.035274 |
| 1 Ounce | Grams | 28.3495 |
| 1 Stone | Kilograms | 6.35029 |
| 1 Tonne | Kilograms | 1000 |
| 1 Milligram | Grams | 0.001 |
| 1 Pound | Ounces | 16 |
* These are standard conversion factors. Our calculator uses these exact values for precise conversions.
Everyday Object Weights
| Object | Weight Range | In Kilograms | In Pounds |
|---|---|---|---|
| 🍎 Apple | 150-200g | 0.15-0.2 kg | 0.33-0.44 lbs |
| 🍌 Banana | 120-150g | 0.12-0.15 kg | 0.26-0.33 lbs |
| 🍞 Loaf of Bread | 500-800g | 0.5-0.8 kg | 1.1-1.76 lbs |
| 💻 Laptop | 1.5-2.5kg | 1.5-2.5 kg | 3.3-5.5 lbs |
| 🎳 Bowling Ball | 6-7kg | 6-7 kg | 13.2-15.4 lbs |
| 🧑 Human Adult | 60-80kg | 60-80 kg | 132-176 lbs |
| 🚗 Car | 1,200-2,000kg | 1,200-2,000 kg | 2,646-4,409 lbs |
| 🐘 Elephant | 4,000-6,000kg | 4,000-6,000 kg | 8,818-13,228 lbs |
* These are approximate average weights. Actual weights vary by brand, model, and specific item.
Metric vs Imperial Weight Guide
📏 Metric System
- • Milligram (mg): 1/1,000,000 kg
- • Gram (g): 1/1,000 kg
- • Kilogram (kg): Base unit
- • Tonne (t): 1,000 kg
- • Used in most countries worldwide
- • Base 10 system (easy to convert)
🇺🇸 Imperial/US Customary
- • Ounce (oz): 28.35 g
- • Pound (lb): 0.454 kg
- • Stone (st): 6.35 kg
- • Used mainly in USA, UK, Ireland
- • Based on historical measurements
Our converter handles both systems seamlessly. Select any unit from either system and convert instantly.
Interesting Weight Facts
Kilogram Standard
The kilogram was once defined by a physical object (Le Grand K). Since 2019, it's based on the Planck constant - a fundamental physics constant.
Avoirdupois vs Troy
The avoirdupois pound (used for most things) = 16 oz. The troy pound (used for precious metals) = 12 troy oz. A troy ounce is heavier than a standard ounce.
Stone Age
The stone as a weight unit comes from the practice of using literal stones as weights. It's still used in the UK and Ireland for body weight.
Weight on Other Planets
Your mass is constant, but your weight changes with gravity. You'd weigh 1/6 of your Earth weight on the Moon, and 2.5x more on Jupiter!
Weight Conversion Tips
- 💡Remember key conversions: 1 kg = 2.2046 lbs, 1 lb = 0.4536 kg, 1 oz = 28.35 g, 1 stone = 14 lbs. These are the most commonly used conversions.
- 💡Use mental math for quick estimates: Multiply kg by 2.2 for lbs (close enough). Divide lbs by 2.2 for kg. For ounces, multiply grams by 28 for rough estimates.
- 💡Cooking conversions: 1 cup of flour = 120-150g, 1 cup of sugar = 200g. For accuracy in baking, always use weight measurements (grams) rather than volume.
- 💡Use the swap button: Click 🔄 to quickly check reciprocal conversions. For example, kg to lbs and back to verify your calculations.
- 💡Know your unit abbreviations: mg (milligram), g (gram), kg (kilogram), t (tonne), oz (ounce), lb (pound), st (stone). These are used worldwide.