Weight Converter
Convert between kg, lbs, g, oz, stone, and more.
How to Use Weight Converter
- 1Enter a weight value
- 2Select the source unit
- 3See all other unit equivalents instantly
About Weight Converter
The Weight Converter converts any mass value between all common metric and imperial units: milligrams, grams, kilograms, metric tons, ounces, pounds, stones, short tons, and long tons. Enter a value in any unit and see all other equivalents simultaneously.
The converter covers the full range of practical weight scenarios: milligrams for pharmaceutical and laboratory measurements, grams and kilograms for everyday cooking and fitness, pounds and ounces for US measurements, and stones for UK body weight conventions.
All processing runs locally in your browser with no server calls. Whether you need to convert a recipe ingredient, compare international shipping weights, or convert body weight between unit systems, results appear instantly.
Key Features of Weight Converter
- Convert between milligrams, grams, kilograms, and metric tons
- Convert between ounces, pounds, stones, short tons, and long tons
- All equivalents shown simultaneously in one view
- High-precision conversion factors for laboratory and shipping use
- Accepts decimal and very large or very small values
- Instant results as you type
- Useful for cooking, fitness, shipping, and scientific measurements
- Fully browser-based with no server dependency
Supported Formats
Input Formats
Output Formats
1 pound = 453.59237 grams exactly. 1 stone = 14 pounds. 1 short ton = 2,000 lb. 1 long ton = 2,240 lb. 1 metric ton = 1,000 kg.
Examples
Convert kilograms to pounds
Convert a body weight of 70 kg to imperial units.
Input
70 kilograms
Output
154.32 pounds | 11.02 stone | 70,000 grams
Convert ounces to grams for cooking
Find the gram equivalent of 8 ounces of flour.
Input
8 ounces
Output
226.8 grams | 0.2268 kg
Common Use Cases
- Converting body weight between kilograms and pounds for medical forms
- Converting recipe ingredient weights between grams and ounces
- Calculating shipping costs that depend on weight in specific units
- Converting lab measurements between milligrams and grams
- Comparing product weights listed in different unit systems
- Converting heavy load capacities between metric and imperial tons
Troubleshooting
Confusing short tons and long tons
Solution
A short ton (US ton) = 2,000 lb. A long ton (UK ton) = 2,240 lb. A metric ton = 1,000 kg = 2,204.6 lb. Always specify which ton you mean in international contexts.
Confusing grams and fluid ounces when cooking
Solution
Fluid ounces measure volume, not weight. Grams measure mass. The relationship between them depends on the density of the ingredient. This converter handles weight only.
Assuming 1 kg equals exactly 2 lb
Solution
1 kg = 2.20462 lb. Using the approximation of 2 lb introduces a 2.3% error. Use the converter for precise values.
Frequently Asked Questions
Which weight units are supported?
Milligram, gram, kilogram, metric ton (t), ounce (oz), pound (lb), stone (st), short ton (US), and long ton (UK).
What is the difference between a metric ton, short ton, and long ton?
Metric ton = 1,000 kg. Short ton (US) = 2,000 lb = 907.2 kg. Long ton (UK) = 2,240 lb = 1,016 kg. They are three distinct units despite sharing the word "ton."
What is a stone in weight?
A stone is a British imperial unit equal to 14 pounds (approximately 6.35 kg). It is still commonly used in the UK and Ireland for expressing body weight.
Can I convert very small weights like milligrams?
Yes. The converter handles milligrams accurately, which is useful for pharmaceutical dosing, nutritional supplement measurements, and laboratory work.
How many pounds are in a kilogram?
1 kilogram = 2.20462 pounds exactly. The common approximation of 2.2 lb is accurate to within about 0.2% for most practical purposes.
Can I convert weight to volume (e.g., kg to liters)?
No. Weight and volume are different physical quantities. The relationship between them requires the density of the specific substance. This converter handles mass units only.
Is the converter accurate for scientific use?
Yes. High-precision conversion factors are used throughout. For most scientific purposes, the displayed precision is sufficient.
Is my data private?
Yes. All conversions run entirely in your browser. No values are transmitted to any server.