Weight Converter
Convert between ounces, pounds, grams, kilograms, and stones.
Last updated: June 13, 2026
Calculator
Results
How to Use This Calculator
- 1Enter the weight value to convert.
- 2Select the unit you are converting from.
- 3View all equivalent weights at once.
Formula Explanation
Weight units are converted through a common base unit (grams). Each unit has a fixed conversion factor.
Variables:
Worked Examples
150 pounds to kilograms
- 1. 1 pound = 453.592 grams
- 2. 150 × 453.592 = 68,038.8 grams
- 3. 68,038.8 ÷ 1000 = 68.04 kg
10 stones to pounds
- 1. 1 stone = 14 pounds
- 2. 10 × 14 = 140 pounds
Why Use This Calculator
- Convert between 5 common weight units.
- All conversions displayed simultaneously.
- Useful for cooking, fitness, shipping, and travel.
- Precise calculations.
Tips & Best Practices
- Quick reference: 1 kg ≈ 2.2 lbs, 1 stone = 14 lbs.
- For cooking: 1 oz ≈ 28g (use precise value 28.3495g for accuracy).
- Body weight in stones is common in the UK and Ireland.
Common Mistakes to Avoid
❌ Confusing fluid ounces with weight ounces.
✅ Fluid ounces measure volume, weight ounces measure mass. 1 fl oz of water weighs about 1.04 oz. This calculator converts weight ounces only.
❌ Using "metric tons" interchangeably with "tons".
✅ A metric ton = 1,000 kg ≈ 2,205 lbs. A US ton (short ton) = 2,000 lbs. A UK ton (long ton) = 2,240 lbs.
Frequently Asked Questions
How do I convert body weight from pounds to kg?
What is a stone in weight?
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