Kg to Pounds and Ounces: A Simple Conversion Guide
Converting between kilograms, pounds and ounces should not feel like a maths exam. Once you know the three numbers behind it, you can move between metric and imperial weights in your head — for parcels, luggage, groceries or anything else where the units don't quite match up.
Why these three units matter
Almost every weight you encounter day to day will be in kilograms, pounds, or ounces. The metric system uses kilograms (and the smaller gram and milligram); the imperial system uses pounds and ounces. The two systems sit side by side on packaging, shipping labels, fitness apps and travel rules, and you sooner or later need to translate between them.
This guide covers the conversions you actually use, with rounded numbers for mental maths and exact figures for when accuracy matters. If you only need a quick answer, use the kilograms to pounds converter or the pounds to kilograms converter instead of doing the maths manually.
The three numbers worth memorising
Every conversion in this guide comes back to these three relationships. Learn them and you can derive the rest.
| Relationship | Exact value | Round figure |
|---|---|---|
| 1 kilogram | 2.20462262 pounds | ~2.2 lb |
| 1 pound | 0.45359237 kilograms | ~0.454 kg |
| 1 pound | 16 ounces | 16 oz (exact) |
Notice that the pound-to-ounce relationship has no decimals. If you are only switching between those two units, the pounds to ounces converter and ounces to pounds converter are faster than working through kilograms.
Converting kilograms to pounds
To turn a weight in kilograms into pounds, multiply it by 2.20462. For most everyday purposes you can simplify the multiplier to 2.2, or use the kilograms to pounds converter when you need the exact figure.
| Kilograms | Pounds | Often used for |
|---|---|---|
| 1 kg | 2.20 lb | Bag of sugar |
| 5 kg | 11.02 lb | Hand luggage limit (some airlines) |
| 10 kg | 22.05 lb | Cabin bag limit |
| 20 kg | 44.09 lb | Standard checked baggage |
| 23 kg | 50.71 lb | Common airline checked limit |
| 32 kg | 70.55 lb | Maximum single-bag limit |
| 50 kg | 110.23 lb | Sack of cement |
Converting pounds to kilograms
Going the other way, divide pounds by 2.2046, or multiply by 0.4536. For exact parcel, luggage, or body-weight conversions, use the pounds to kilograms converter. For a quick estimate, divide the pounds by 2 and subtract about 10 percent.
| Pounds | Kilograms | Stones & pounds |
|---|---|---|
| 10 lb | 4.54 kg | 0 st 10 lb |
| 25 lb | 11.34 kg | 1 st 11 lb |
| 50 lb | 22.68 kg | 3 st 8 lb |
| 100 lb | 45.36 kg | 7 st 2 lb |
| 150 lb | 68.04 kg | 10 st 10 lb |
| 200 lb | 90.72 kg | 14 st 4 lb |
| 250 lb | 113.40 kg | 17 st 12 lb |
Converting kilograms to pounds and ounces
Sometimes a single number in pounds isn't enough. Baby weights, deli scales and parcel labels often need an answer in pounds and ounces — for example, "5 lb 4 oz". If you only need the total ounce value, use the kilograms to ounces converter; otherwise, follow the three-step method below.
- Multiply kilograms by 2.20462 to get the total in decimal pounds.
- Take the whole number part — those are your pounds.
- Multiply the leftover decimal by 16 to get ounces.
| Kilograms | Pounds (decimal) | Pounds & ounces |
|---|---|---|
| 0.5 kg | 1.10 lb | 1 lb 1.64 oz |
| 1 kg | 2.20 lb | 2 lb 3.27 oz |
| 2 kg | 4.41 lb | 4 lb 6.55 oz |
| 3 kg | 6.61 lb | 6 lb 9.82 oz |
| 5 kg | 11.02 lb | 11 lb 0.36 oz |
| 7 kg | 15.43 lb | 15 lb 6.91 oz |
| 10 kg | 22.05 lb | 22 lb 0.74 oz |
| 15 kg | 33.07 lb | 33 lb 1.10 oz |
| 20 kg | 44.09 lb | 44 lb 1.48 oz |
| 25 kg | 55.12 lb | 55 lb 1.85 oz |
Working with ounces on their own
Ounces show up in two places where kilograms don't quite fit: small items (postage, ingredients, small parcels) and the fractional part of a larger pounds-and-ounces weight. The relationship is simple — sixteen ounces in a pound, no remainders.
To get from ounces straight to kilograms, divide by 35.274, or use the ounces to kilograms converter. The reverse direction uses the same number, and the kilograms to ounces converter is useful for small parcels and ingredient weights.
| Ounces | Pounds | Grams | Kilograms |
|---|---|---|---|
| 1 oz | 0.0625 lb | 28.35 g | 0.028 kg |
| 4 oz | 0.25 lb | 113.40 g | 0.113 kg |
| 8 oz | 0.50 lb | 226.80 g | 0.227 kg |
| 12 oz | 0.75 lb | 340.19 g | 0.340 kg |
| 16 oz | 1.00 lb | 453.59 g | 0.454 kg |
| 32 oz | 2.00 lb | 907.18 g | 0.907 kg |
| 64 oz | 4.00 lb | 1,814.37 g | 1.814 kg |
Note that the ounce here is the standard avoirdupois ounce — the everyday unit used for food and parcels. The troy ounce (used for precious metals) is a separate unit and is roughly 10 percent heavier.
Mental maths shortcuts
Most weights you'll deal with don't need a calculator. A handful of approximations get you within a fraction of a percent.
Kilograms to pounds
Double the kilograms, then add 10 percent of that figure. For 30 kg: double to 60, add 6, total 66 lb (the exact answer is 66.14).
Pounds to kilograms
Halve the pounds, then take 10 percent off. For 80 lb: half is 40, minus 4, total 36 kg (the exact answer is 36.29).
Ounces to grams
Multiply ounces by 28 for a quick floor, by 30 for a quick ceiling. The real number sits in between.
Common situations where this comes up
The numbers above turn up over and over in everyday life. A few examples:
- Air travel. Most international airlines set checked-bag limits in kilograms (often 23 kg), while US domestic carriers use pounds (often 50 lb). The two figures are nearly identical — 23 kg is 50.7 lb — but worth confirming before you fly.
- Recipes. A British or Australian recipe in kilograms can be turned into pounds by doubling the weight. For finer baking measurements, use the grams to ounces tool for exact figures.
- Parcel shipping. Carriers in the US, UK and EU each quote in their own units. A 10 kg box is a 22 lb box; a 5 lb box is roughly 2.27 kg. For exact shipping weights, use kilograms to pounds or pounds to kilograms.
- Pet weights. Vet records and pet food often mix the two systems. A 7 kg cat weighs about 15.4 lb; a 30 lb dog is around 13.6 kg.
Related converters and reading
If you want a single number rather than a chart, jump straight to the converter you need:
For deeper context on related units, you may also like our complete weight conversion chart, the grams, ounces and pounds guide, and our walkthrough of the stone, pounds and kilograms relationship.