Enter values to see results
—
—
—
—
—
Enter values to see results
—
—
—
—
—
The Weight Converter provides instant, accurate conversion between all major weight and mass units used around the world. Whether you need to convert kilograms to pounds for a fitness goal, ounces to grams for a recipe, or stone to kilograms for a medical checkup, this tool handles every scenario with precision.
Weight measurement systems vary globally. The metric system uses grams and kilograms — the international standard for science, medicine, and most everyday use. The imperial system uses ounces, pounds, and stone — common in the United States, United Kingdom, and other English-speaking countries. Metric tons (1,000 kg) are used for large industrial and commercial weights.
Understanding weight conversions is essential for cooking and baking (recipes often mix metric and imperial), health and fitness (body weight, food nutrition labels), shipping and logistics (package weight limits), and international trade. This converter provides simultaneous results in all major units, saving time and eliminating manual calculation errors.
The converter uses a base-unit approach: all inputs are first converted to kilograms, then converted to each output unit using exact multiplication factors.
Convert to kilograms (base unit):
Convert kilograms to outputs:
The conversion factor 1 kg = 2.20462 lbs is derived from the exact legal definition: 1 pound = 0.45359237 kg exactly (international avoirdupois pound).
Context matters when reading weight conversions. For body weight, a 70 kg person weighs approximately 154 lbs or 11 stone — a commonly needed conversion for international medical records. For cooking, 1 pound of flour is about 454 grams. For postal shipping, knowing that 1 kg ≈ 2.2 lbs helps estimate shipping costs when labels use different units. For very light items like jewelry, ounces or grams are most meaningful; for heavy industrial loads, metric tons are appropriate.
Inputs
Results
11 stone (common UK body weight measurement) equals approximately 69.85 kg or 154 lbs — useful for international medical consultations.
Inputs
Results
8 ounces (0.5 pounds) equals approximately 227 grams — a standard conversion for baking recipes that use imperial measurements.
There are exactly 2.20462 pounds in one kilogram. This is based on the international avoirdupois definition where 1 pound = 0.45359237 kg exactly. A quick approximation: multiply kg by 2.2 to get a close pound equivalent.
A stone equals 14 pounds or approximately 6.35 kg. It is primarily used in the United Kingdom and Ireland to express body weight. For example, a 70 kg person weighs about 11 stone. The stone unit is rarely used outside these countries.
Technically, mass (measured in kg) is the amount of matter in an object, while weight is the gravitational force on that mass (measured in Newtons). In everyday usage, both terms are used interchangeably for measurements in kg, lbs, and oz, since we assume standard Earth gravity.
Divide the number of grams by 28.3495 (since 1 oz = 28.3495 g). Alternatively, multiply grams by 0.035274. For quick mental math: 100 grams ≈ 3.5 ounces, and 28 grams ≈ 1 ounce.
This converter uses internationally recognized conversion factors based on the exact legal definition of the pound (0.45359237 kg). Results are displayed to 3–4 decimal places. Precision is more than sufficient for all practical applications including scientific, culinary, and commercial uses.
A metric ton (tonne) = 1,000 kg = approximately 2,204.62 lbs. A short ton (US ton) = 2,000 lbs = approximately 907.18 kg. A long ton (UK ton) = 2,240 lbs = approximately 1,016 kg. This converter uses metric tons. Always clarify which ton is meant in commercial and industrial contexts.
Roboculator Team
The Roboculator Team explains calculations, planning tools, and practical formulas in clear language for real-life situations.
How helpful was this calculator?
Be the first to rate!
