Lbs to Pounds Converter: Lbs to Kg, Oz, Grams and Stones
Short answer first: lbs and pounds are the same thing. To convert lbs to pounds you change nothing: 150 lbs = 150 pounds, exactly. The conversion people actually want is lbs to kg (or pounds to kg), and this page does exactly that: a two-way live converter between pounds and kilograms, plus ounces, grams and stones, with every step of the working shown.
Pounds converter
What is lbs, and why is pound abbreviated that way?
Lbs means pounds. If you were wondering about the lbs meaning: it is the plural written abbreviation of "lb", and there is no separate unit hiding behind it. 1 lb = 1 pound, exactly.
The odd spelling comes from Latin. The Roman unit of weight was the libra (a pair of scales), and the phrase libra pondo meant "a pound by weight". The abbreviation lb survived from libra, and English adds an s for the plural, giving lbs. The same Latin root gave us the currency symbol £, a stylised capital L.
Two things follow from this history:
- Lbs vs pounds is not a real conversion. Any "lbs to pounds converter" that does more than echo the number back is theatre. The useful conversions are lbs to kg, lbs to oz, lbs to g and lbs to stone, which is what the tool above computes.
- 1 lb is defined exactly. Since the 1959 international agreement, one avoirdupois pound is exactly 0.45359237 kilograms. From that single definition everything else follows: 16 oz per lb, 453.59237 g per lb, 14 lb per stone.
Worked examples
Multiply pounds by the exact factor 0.45359237. So 150 lbs is 68.0388555 kg.
Going the other way, divide kilograms by 0.45359237. So 68 kg is 149.9143382857 lb, about 149.91 lb at 2 decimals.
One stone is exactly 14 lb. Dividing 150 by 14 gives 10 whole stone with 10 lb left over, written 10 st 10 lb.
Grams divide by 453.59237 per pound; ounces divide by exactly 16 per pound.
Quick reference tables
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 1 | 0.4536 |
| 5 | 2.2680 |
| 10 | 4.5359 |
| 25 | 11.3398 |
| 50 | 22.6796 |
| 100 | 45.3592 |
| 150 | 68.0389 |
| 200 | 90.7185 |
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 1 | 2.2046 |
| 5 | 11.0231 |
| 10 | 22.0462 |
| 25 | 55.1156 |
| 50 | 110.2311 |
| 100 | 220.4623 |
| 150 | 330.6934 |
| 200 | 440.9245 |
Frequently asked questions
Is lbs the same as pounds?
Yes. Lbs is simply the common written abbreviation of pounds, so 150 lbs and 150 pounds are exactly the same weight. Use the converter above to turn that weight into kilograms, ounces, grams or stones.
Why is pound abbreviated lbs?
It comes from Latin. The Roman unit of weight was the libra, and the phrase libra pondo meant a pound by weight. The abbreviation lb survived from libra, and the plural adds an s, giving lbs.
What does lbs mean?
Lbs means pounds, the avoirdupois unit of mass used in the United States and, alongside stones, in the United Kingdom. One pound is defined as exactly 0.45359237 kilograms.
How many kilograms is 1 lb?
Exactly 0.45359237 kg. That is the international definition agreed in 1959. So 150 lb is 150 times 0.45359237, which is 68.0388555 kg.
How many pounds are in 1 kg?
One kilogram is 2.2046226218 lb, usually rounded to 2.2046 lb. So 70 kg is 154.3235835294 lb.
What is the formula to convert lbs to kg?
Multiply pounds by 0.45359237: kg = lb times 0.45359237. To go the other way, divide kilograms by 0.45359237: lb = kg divided by 0.45359237.
What is 150 lbs in kg?
150 lbs is 68.0388555 kg. The working: 150 times 0.45359237 = 68.0388555. As a stone breakdown, 150 lb is 10 st 10 lb.
What is 70 kg in pounds?
70 kg is 154.3235835294 lb, about 154.32 lb. The working: 70 divided by 0.45359237 = 154.3235835294.
How many ounces are in a pound?
16 ounces make one pound, exactly. One ounce is 28.349523125 g, so 32 oz is 2 lb, and 1 kg is 35.2739619496 oz.
How many grams are in a pound?
Exactly 453.59237 grams. That is why 500 g is 1.1023 lb: 500 divided by 453.59237 = 1.1023113109.
How many pounds are in a stone?
14 pounds make one stone, exactly. So 10 stone is 140 lb, which is 63.5029318 kg.
What is 10 stone in pounds?
140 lb, exactly. In kilograms that is 63.5029318 kg, which is 10 times 6.35029318.
Is there a difference between lb and lbs?
No difference in the unit, only in writing. Lb is the singular form and lbs the plural, so 1 lb but 150 lbs. Science style guides use lb for both.
Is the pound sign related to lbs?
Yes. The currency symbol is a stylised capital L taken from libra, the same Latin root as lb. That is why British money was once counted in pounds, shillings and pence. For money conversions, see our pence-to-pounds converter.
Can I use this converter for inch-pounds of torque?
No. Inch-pounds measure torque, which is force times distance, not mass, so the numbers are not interchangeable with pounds of weight. Use our inch-pounds to newton-meters converter for torque.
How do I convert pounds to stones?
Divide pounds by 14. For example, 150 lb divided by 14 is 10 stone with 10 lb left over, written 10 st 10 lb. Our kg-to-stones converter shows the same breakdown starting from kilograms.
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