Weight Conversions: How to Accurately Convert Between Units

Weight (or mass) is an essential measurement in cooking, science, fitness, and trade. Converting between different weight units ensures accuracy in recipes, shipping, medicine, and engineering.

Common Weight Units

Metric System (Used Worldwide)

• Milligram (mg) – Smallest unit, used for medicine and small objects

• Gram (g) – Common for food and everyday items

• Kilogram (kg) – Standard weight unit (1 kg = 1,000 g)

• Metric Ton (t) – Used for large-scale weights (1 metric ton = 1,000 kg)

Imperial & U.S. Customary Units

• Ounce (oz) – Small unit (used in cooking and postal weights)

• Pound (lb) – Standard weight unit in the U.S. and UK

• Stone (st) – Common in the UK for measuring body weight (1 stone = 14 lb)

• Ton (short ton, U.S.) – 2,000 pounds

• Ton (long ton, UK) – 2,240 pounds

Weight Conversion Formulas

🔹 Metric to Metric

• 1 kilogram (kg) = 1,000 grams (g)

• 1 gram (g) = 1,000 milligrams (mg)

🔹 Metric to U.S. Customary

• 1 kilogram (kg) = 2.205 pounds (lb)

• 1 gram (g) = 0.035 ounces (oz)

• 1 metric ton (t) = 1.102 U.S. tons

🔹 U.S. Customary to Metric

• 1 pound (lb) = 0.454 kilograms (kg)

• 1 ounce (oz) = 28.35 grams (g)

• 1 ton (short ton) = 907.184 kilograms (kg)

🔹 Stone to Pounds & Kilograms

• 1 stone (st) = 14 pounds (lb)

• 1 stone (st) = 6.35 kilograms (kg)

• Cooking & Baking – Recipes use different units depending on region.

• Fitness & Health – Weight tracking often requires conversions.

• Science & Medicine – Precision is critical in pharmaceutical and chemical measurements.

• Shipping & Trade – International transactions require accurate weight conversion.

Instead of manual calculations, weight conversion calculators provide quick and precise results. Whether in kitchens, gyms, labs, or industries, knowing how to convert weight ensures accuracy and efficiency in everyday tasks!