Weight Converter

How it works

Every unit is converted through a common base, the kilogram. The value is converted to kilograms, then to the target unit:

result = value × (factor_from ÷ factor_to)

where each factor is the unit's mass in kilograms. The key definitions are:

• 1 pound = 0.45359237 kg (exact)
• 1 ounce = 1/16 pound = 0.0283495 kg
• 1 stone = 14 pounds = 6.35029 kg
• 1 gram = 0.001 kg · 1 metric ton = 1,000 kg

Worked example

Convert 70 kilograms to pounds:

• pounds = 70 ÷ 0.45359237 ≈ 154.32 lb

And 12 ounces to grams: 12 × 28.3495 ≈ 340.19 g.