Tonnes to pounds (t to lb)

The formula

lb = t × 2,204.622622

Where the factor comes from — each unit by its definition, then its size in SI:

• 1 t = 1000 × kg = 1,000 kg
• 1 lb = 0.45359237 × kg = 0.45359237 kg

Dividing the two SI sizes gives the factor: 2,204.62262185 (rounded for display; the underlying ratio is fixed by the definitions). The reverse factor is 0.00045359237.

Physics formulas take mass in kilograms. Pounds (lb) are a unit of mass; pound-force (lbf) is the weight of a pound — a different quantity, on the force page.

Worked examples

• A family car (1500 kg): 1.5 t = 3,306.93 lb — 1.5 × 2,204.622622 = 3,306.93
• An adult (75 kg): 0.075 t = 165.347 lb — 0.075 × 2,204.622622 = 165.347
• A bag of flour: 0.000453592 t = 1 lb — 0.000453592 × 2,204.622622 = 1
• A block of butter (250 g): 0.00025 t = 0.551156 lb — 0.00025 × 2,204.622622 = 0.551156

Frequently asked questions