Kilograms to Pounds Converter
Convert a weight between kilograms, pounds, grams, ounces and stones. Enter any value and choose the unit you are starting from. Every other unit updates instantly, and the result also shows the split formats used for body weight: stones and pounds (UK), and pounds and ounces.
Formula
Worked example
70 kg to pounds: 70 / 0.45359237 = 154.3236 lb. Split: 154 lb + 0.3236 x 16 = 154 lb 5.18 oz. In stones: 70 / 6.35029 = 11.0231 st = 11 st 0.32 lb.
How to convert kilograms to pounds
Multiply the number of kilograms by 2.20462 to get pounds. Going the other way, multiply pounds by 0.453592 to get kilograms. These factors come from the exact international definition of one pound as 0.45359237 kilograms (agreed in 1959 by the US, UK and Commonwealth), so the conversion is perfectly reversible. For a quick mental check, double the kilograms and add ten percent: 70 kg x 2 = 140, plus 7 = 147, which is close to the exact 154.3 lb.
Stones and pounds (UK body weight format)
In the United Kingdom and Ireland, body weight is traditionally stated as stones and pounds rather than just pounds or kilograms. One stone is 14 avoirdupois pounds, or approximately 6.35 kilograms. So 70 kg equals 11 stone 0.3 lb. This calculator shows both the decimal pounds result and the split stones-and-pounds format so you can communicate weight in whichever system your audience uses.
Pounds and ounces for infants and small packages
Birth weight and infant weight gain are routinely recorded in pounds and ounces in the US and UK. One pound contains 16 avoirdupois ounces, so 5.5 lb equals 5 lb 8 oz. Shipping carriers and recipe ingredients also use pounds and ounces, so the split format avoids the ambiguity of a decimal pound value.
Quick reference for common weights
Some useful anchors: 1 kg = 2.205 lb, 5 kg = 11.023 lb, 10 kg = 22.046 lb, 50 kg = 110.231 lb, 100 kg = 220.462 lb. In grams: 100 g = 3.527 oz, 500 g = 1.102 lb. A UK bag of sugar (1 kg) weighs about 2 lb 3.27 oz. A US short ton is 2000 lb = 907.185 kg. A metric tonne is 1000 kg = 2204.623 lb.
Kilograms to pounds and stones reference
| kg | lb (decimal) | lb and oz | st and lb |
|---|---|---|---|
| 1 | 2.2046 | 2 lb 3.27 oz | 0 st 2.20 lb |
| 5 | 11.0231 | 11 lb 0.37 oz | 0 st 11.02 lb |
| 10 | 22.0462 | 22 lb 0.74 oz | 1 st 8.05 lb |
| 20 | 44.0925 | 44 lb 1.48 oz | 3 st 2.09 lb |
| 30 | 66.1387 | 66 lb 2.22 oz | 4 st 10.14 lb |
| 40 | 88.1849 | 88 lb 2.96 oz | 6 st 4.18 lb |
| 50 | 110.2311 | 110 lb 3.70 oz | 7 st 12.23 lb |
| 60 | 132.2774 | 132 lb 4.44 oz | 9 st 6.28 lb |
| 70 | 154.3236 | 154 lb 5.18 oz | 11 st 0.32 lb |
| 80 | 176.3698 | 176 lb 5.92 oz | 12 st 8.37 lb |
| 90 | 198.4161 | 198 lb 6.66 oz | 14 st 2.42 lb |
| 100 | 220.4623 | 220 lb 7.40 oz | 15 st 10.46 lb |
| 120 | 264.5548 | 264 lb 8.88 oz | 18 st 12.55 lb |
| 150 | 330.6934 | 330 lb 11.09 oz | 23 st 8.69 lb |
| 200 | 440.9245 | 440 lb 14.79 oz | 31 st 6.92 lb |
Exact values are rounded for display. The stones-and-pounds column uses the UK body weight convention.
Frequently asked questions
How many pounds are in a kilogram?
Exactly 2.2046226218 pounds. For everyday use, multiplying kilograms by 2.2 is close enough. Use the full six-decimal factor when accuracy is critical, such as in medical or scientific contexts.
How do I convert pounds back to kilograms?
Multiply the number of pounds by 0.45359237, or simply select "lb" as the input unit above and the calculator shows the kilograms. The conversion is exact and fully reversible.
How do I convert kilograms to stones and pounds?
Divide the kilograms by 6.35029318 to get decimal stones. The whole-number part is the stones. Multiply the fractional part by 14 to get the remaining pounds. This calculator does that automatically and shows the result in the "Stones and pounds" field.
How do I convert kilograms to pounds and ounces?
Convert to decimal pounds first (multiply kg by 2.20462). Take the whole number as the pounds. Multiply the remaining decimal by 16 to get the ounces. For example, 3.5 kg = 7.7162 lb = 7 lb and 0.7162 x 16 = 7 lb 11.46 oz.
Is this the same as pound-force?
No. This calculator converts mass using the avoirdupois pound, not force. Pound-force is a unit of weight-as-force and numerically equals a pound-mass only at standard gravity (9.80665 m/s). For most everyday purposes the distinction does not matter.
What is the difference between a UK stone and a pound?
One stone is exactly 14 avoirdupois pounds, or about 6.35029 kilograms. The stone is used for body weight in the UK and Ireland but not in the US. Both countries use the same pound definition, so 70 kg = 154.3 lb = 11 stone 0.3 lb.