Weight Converter
Enter a value and select the source and target units to convert between seven common weight (mass) units: milligrams, grams, kilograms, ounces, pounds, metric tons, and stone. The conversion updates instantly as you type.
The converter covers both metric and imperial weight units, making it useful for cooking (grams and ounces), shipping (kilograms and pounds), and body weight (kilograms, pounds, and stone). All conversion factors follow international standards.
Runs entirely in your browser with no server involved. Useful for international shipping, recipe conversions, fitness tracking, and science homework.
By The Paper Room Editorial Team — Converter Tools
Frequently asked questions
How many grams are in a pound?▼
One pound equals approximately 453.592 grams, or about 0.4536 kilograms.
What is a stone?▼
A stone is an imperial unit equal to 14 pounds (approximately 6.35 kg). It is commonly used in the UK and Ireland for body weight.
Is this measuring weight or mass?▼
In everyday use, the terms are interchangeable. Technically, this converter handles mass units. Weight depends on gravity, while mass is constant. On Earth's surface, the practical difference is negligible for everyday conversions.