Weight Calculator
From
To
Converted Weight68.0388
The Weight Calculator converts a quantity between common weight and mass units: pounds, kilograms, stone, ounces, grams, US (short) tons, and metric tonnes. It converts every value through a single kilogram base, so any pairing is accurate in both directions. Use it for body weight, shipping weights, recipe amounts, or any quick everyday weight conversion.
Formula
result = value × kg_from / kg_to
- value
- The amount you enter
- kg_from
- Kilograms in one of the source unit
- kg_to
- Kilograms in one of the target unit
How it works
- Enter a value, pick the unit it is in (the "from" unit), and pick the unit you want (the "to" unit).
- The value is multiplied by the from-unit’s kilogram factor to get kilograms, then divided by the to-unit’s kilogram factor to land in the target unit.
- Supported units and their kilogram factors include pound (0.453592), stone (6.35029), ounce (0.0283495), gram (0.001), US ton (907.185), and metric tonne (1000).
Worked examples
Convert 70 kilograms to pounds.
- Kilogram factor for kg is 1, so 70 kg stays 70 in the base.
- Divide by the pound factor: 70 ÷ 0.453592 ≈ 154.32 lb.
70 kg ≈ 154.32 pounds.
Convert 150 pounds to kilograms.
- Multiply by the pound factor: 150 × 0.453592 = 68.0388 kg.
- Kilogram is the base unit, so no further division is needed.
150 lb ≈ 68.04 kilograms.
Frequently asked questions
- Which units can I convert between?
- Pounds (lb), kilograms (kg), stone, ounces (oz), grams (g), US short tons, and metric tonnes. Any of these can convert to any other in either direction.
- What is the difference between a US ton and a metric tonne?
- A US (short) ton is 907.185 kg, while a metric tonne is exactly 1000 kg. The calculator treats them as separate units, so choose the correct one for your context.
- Is weight the same as mass here?
- For conversion purposes the calculator treats these units as measures of mass on Earth. The kilogram-based factors apply equally whether you call the quantity weight or mass under normal gravity.
- How many pounds are in a stone?
- One stone equals 14 pounds, or about 6.35029 kilograms. The stone unit is commonly used in the UK and Ireland to express body weight.