Weight Converter
Convert weights between pounds, kilograms, ounces, and grams.
How do I convert pounds to kilograms?
Divide pounds by 2.2046 (or multiply by 0.4536) to get kilograms. Formula: kg = lbs x 0.4536. Example: 150 lbs = 68.04 kg, 200 lbs = 90.72 kg. Reverse: kg x 2.2046 = lbs. Quick approximation: Divide by 2 for rough estimate (150 lbs ≈ 75 kg actual = 68 kg). Most countries use kg for body weight; US uses pounds. Medical settings often use kg globally.
How many ounces are in a pound?
1 pound = 16 ounces. Formula: ounces = pounds x 16. Example: 2 lbs = 32 oz, 5 lbs = 80 oz, 0.5 lbs = 8 oz. Reverse: ounces / 16 = pounds. Common uses: Cooking (8 oz cup of liquid), shipping (packages in lbs/oz), body weight (pounds), food portions (oz). Don't confuse with fluid ounces (volume) - this is weight/mass ounces. 16 oz weight = 1 pound mass.
What is the difference between grams and kilograms?
Metric system: 1 kilogram = 1,000 grams. "Kilo" means thousand. Gram is base unit (light items), kilogram for heavier items. Examples: Sugar packet = 4 grams, Phone = 200 grams, Person = 70 kilograms (70,000 grams). Common conversions: 1 kg = 1,000 g = 2.2 lbs = 35.3 oz. Cooking often uses grams for precision (baking), daily life uses kilograms (body weight, groceries).
How much does a gallon of water weigh?
Water weight: 1 US gallon = 8.34 pounds = 3.78 kilograms. 1 liter = 2.2 pounds = 1 kilogram (by definition - metric system). Quick reference: Cup of water (8 fl oz) = 0.52 lbs = 236g, Liter bottle = 2.2 lbs = 1 kg, 5-gallon jug = 41.7 lbs = 18.9 kg. Note: This is water specifically - other liquids vary (milk, oil, honey all different densities). Weight is temperature-dependent but negligible for daily use.