120 lbs to kg

How to convert 120 lbs to kg

A pound is defined as exactly 0.45359237 kilogram, so multiply:

120 lb × 0.45359237 = 54.43 kg

Dividing by 2.20462 gives the same answer. The converter above starts at 120 lb and has a second field for ounces; type a different number and the kilograms follow, or use the full lbs to kg converter. To go the other way, see kg to lbs.

120 lbs in kilograms and grams, and in stone

The 0.43 after the whole kilograms is a fraction of a kilogram: 0.4311 × 1,000 = 431.1 grams. So 120 pounds is:

• 54 kg 431 g — the way a metric scale or a parcel form reads;
• 54,431 g — in grams;
• 8 st 8 lb — the British way of stating weight (120 ÷ 14).

The result block shows all of these for whatever you enter. Freight and courier forms outside the U.S. ask for kilograms: a 120 lb crate is 54.43 kg, which a form that rounds up to the next kilogram records as 55 kg.

Nearby values

From 20 to 220 lb:

Rounded for display, 120 lb is 54.4 kg on a scale with one decimal and 54 kg on one that shows whole kilograms. Going the other way, 54 kg is 119.0 lb, so a reading of 54 kg on a metric scale is 1.0 lb less than 120 lb.

120 pounds and some ounces

Scales in the U.S. often read pounds and ounces. Each ounce is 28.35 grams, so the ounces matter at this weight only in the first decimal:

120.25 lb is 120 lb 4 oz, 120.5 lb is 120 lb 8 oz and 120.75 lb is 120 lb 12 oz. Type the ounces into the second field to convert an exact reading.

A quick rule for your head

Halve the pounds, then take away 10% of that: 120 ÷ 2 = 60, and 60 − 6 = 54 kg. The rule is about 0.8% low — here 0.43 kg. Halving alone (60 kg) is 5.57 kg too high. Couriers usually round up, so 54.43 kg becomes 55 kg on the bill. For smaller weights, use ounces to grams.