Kilograms to Pounds and Ounces — Conversion Guide with Reference Tables
Kilograms and pounds are the two most common weight units in everyday life, and the need to convert between them comes up constantly — reading a foreign nutrition label, comparing body weight with someone in another country, checking luggage allowances, or understanding a recipe from a US cookbook. The conversion is a fixed ratio, but doing it in your head is where people tend to approximate and get slightly wrong answers.
The Weight Converter handles any combination of kg, lbs, oz, grams, and stone instantly. This article covers the formulas, reference tables, and some context on where each unit is used.
Kilograms to Pounds
pounds = kilograms × 2.20462
The quick mental approximation is to multiply by 2.2, which gives you a result within about 0.2% of the exact value. For most practical purposes that's fine.
Examples:
- 1 kg = 2.205 lb
- 5 kg = 11.023 lb
- 10 kg = 22.046 lb
- 50 kg = 110.23 lb
- 70 kg = 154.32 lb
- 100 kg = 220.46 lb
Pounds to Kilograms
kilograms = pounds × 0.453592
The quick approximation is to divide by 2.2, or equivalently multiply by 0.45.
Examples:
- 1 lb = 0.454 kg
- 10 lb = 4.536 kg
- 50 lb = 22.680 kg
- 100 lb = 45.359 kg
- 150 lb = 68.039 kg
- 200 lb = 90.718 kg
Kilograms to Pounds Reference Table
| Kilograms | Pounds | Pounds & ounces |
|---|---|---|
| 0.5 kg | 1.10 lb | 1 lb 1.6 oz |
| 1 kg | 2.20 lb | 2 lb 3.3 oz |
| 1.5 kg | 3.31 lb | 3 lb 4.9 oz |
| 2 kg | 4.41 lb | 4 lb 6.5 oz |
| 2.5 kg | 5.51 lb | 5 lb 8.2 oz |
| 3 kg | 6.61 lb | 6 lb 9.8 oz |
| 4 kg | 8.82 lb | 8 lb 13.1 oz |
| 5 kg | 11.02 lb | 11 lb 0.4 oz |
| 6 kg | 13.23 lb | 13 lb 3.6 oz |
| 7 kg | 15.43 lb | 15 lb 6.9 oz |
| 8 kg | 17.64 lb | 17 lb 10.2 oz |
| 9 kg | 19.84 lb | 19 lb 13.4 oz |
| 10 kg | 22.05 lb | 22 lb 0.7 oz |
| 15 kg | 33.07 lb | 33 lb 1.1 oz |
| 20 kg | 44.09 lb | 44 lb 1.5 oz |
| 25 kg | 55.12 lb | 55 lb 1.9 oz |
| 30 kg | 66.14 lb | 66 lb 2.2 oz |
| 40 kg | 88.18 lb | 88 lb 2.9 oz |
| 50 kg | 110.23 lb | 110 lb 3.7 oz |
| 60 kg | 132.28 lb | 132 lb 4.4 oz |
| 70 kg | 154.32 lb | 154 lb 5.1 oz |
| 80 kg | 176.37 lb | 176 lb 5.9 oz |
| 90 kg | 198.42 lb | 198 lb 6.7 oz |
| 100 kg | 220.46 lb | 220 lb 7.4 oz |
Pounds to Kilograms Reference Table
| Pounds | Kilograms |
|---|---|
| 1 lb | 0.454 kg |
| 5 lb | 2.268 kg |
| 10 lb | 4.536 kg |
| 15 lb | 6.804 kg |
| 20 lb | 9.072 kg |
| 25 lb | 11.340 kg |
| 30 lb | 13.608 kg |
| 40 lb | 18.144 kg |
| 50 lb | 22.680 kg |
| 75 lb | 34.019 kg |
| 100 lb | 45.359 kg |
| 125 lb | 56.699 kg |
| 150 lb | 68.039 kg |
| 175 lb | 79.379 kg |
| 200 lb | 90.718 kg |
| 250 lb | 113.398 kg |
| 300 lb | 136.078 kg |
Converting to Pounds and Ounces
When you want a result in pounds and ounces together (rather than decimal pounds), the process is:
1. Convert kg to decimal pounds: lbs = kg × 2.20462 2. Take the whole number part as the pounds 3. Multiply the decimal remainder by 16 to get ounces
Example: Convert 3.5 kg
- 3.5 × 2.20462 = 7.716 lb
- Whole pounds: 7
- Remaining decimal: 0.716
- Ounces: 0.716 × 16 = 11.5 oz
- Result: 7 lb 11.5 oz
Example: Convert 0.85 kg (a baby's birth weight)
- 0.85 × 2.20462 = 1.874 lb
- Whole pounds: 1
- Remaining decimal: 0.874
- Ounces: 0.874 × 16 = 13.98 oz ≈ 14 oz
- Result: 1 lb 14 oz
Kilograms to Ounces Directly
If you need just ounces (no pounds), multiply kg by 35.274:
ounces = kilograms × 35.274
Examples:
- 0.1 kg = 3.527 oz
- 0.5 kg = 17.637 oz
- 1 kg = 35.274 oz
- 2 kg = 70.548 oz
This comes up for food packaging weights — a 400g tin of tomatoes is 400 × 0.035274 = 14.1 oz, which is why US cans are often labeled "14 oz" for the equivalent metric size.
Where Each Unit Is Used
Kilograms are standard for body weight in most of the world — Europe, Asia, South America, Oceania, Africa. Health records, BMI calculations, and medical dosing in these regions all use kg. Grocery items, luggage, and shipping are also kg in metric countries.
Pounds are the primary body weight unit in the United States, and are also used alongside kilograms in the UK. US product weights, food labels, and shipping rates (USPS, UPS, FedEx domestic) use pounds and ounces.
Stone is used in the UK and Ireland specifically for human body weight — almost nowhere else. 1 stone = 14 pounds = 6.35 kg. A person who weighs "11 stone 4" weighs 158 lb or 71.7 kg. Outside the UK and Ireland, stone is rarely used even in other English-speaking countries.
Body Weight Reference Points
For people tracking or comparing weight across metric and imperial contexts:
| Weight (kg) | Weight (lb) | Weight (stone) |
|---|---|---|
| 50 kg | 110.2 lb | 7 st 12 lb |
| 55 kg | 121.3 lb | 8 st 9 lb |
| 60 kg | 132.3 lb | 9 st 6 lb |
| 65 kg | 143.3 lb | 10 st 3 lb |
| 70 kg | 154.3 lb | 11 st 0 lb |
| 75 kg | 165.3 lb | 11 st 11 lb |
| 80 kg | 176.4 lb | 12 st 8 lb |
| 85 kg | 187.4 lb | 13 st 5 lb |
| 90 kg | 198.4 lb | 14 st 2 lb |
| 95 kg | 209.4 lb | 14 st 13 lb |
| 100 kg | 220.5 lb | 15 st 10 lb |
Luggage and Shipping Weight Limits
Airlines and shipping carriers use both systems depending on the route and carrier. Most international airlines use kilograms for checked baggage limits:
- Budget European airlines: 15–20 kg checked allowance
- Full-service long-haul: 23 kg (50 lb) or 32 kg (70 lb) per bag
- US domestic carriers: often listed in pounds — typically 50 lb (22.7 kg)
If your scale reads in one unit and the airline limit is in another, the Weight Converter lets you check quickly without approximating.
For shipping: USPS, UPS, and FedEx domestic rates in the US are calculated in pounds and ounces. International shipping through these carriers often shows rates in both kg and lb. A 5 kg parcel is 11.02 lb — just over the 11 lb threshold if one exists.
