Weight Unit Converter โ kg to lbs, grams, ounces, stone, tonnes
Convert between kilograms, pounds, grams, ounces, stone, and tonnes instantly. Results update as you type. Free online weight converter, no signup.
Quick reference table
| Value | kg | lbs |
|---|
Kilograms vs Pounds โ The Most Common Conversion
1 kilogram = 2.20462 pounds. For quick mental math, multiply kilograms by 2.2. This gives a result accurate to within 0.2%, which is good enough for most practical purposes. Going the other direction: divide pounds by 2.2 to get kilograms.
Body weight is the most common reason people need this conversion. A person weighing 70 kg is approximately 154 lbs. 100 kg is 220 lbs. 180 lbs is approximately 81.6 kg. The converter above handles any value instantly โ enter your weight in either unit and the other updates immediately.
Understanding Stone โ The UK Weight System
Stone is a unit of weight used almost exclusively in the UK and Ireland for body weight. 1 stone = 14 pounds = 6.35 kg. Body weight in the UK is commonly expressed as "stone and pounds" โ "11 stone 3" means 11 stones and 3 pounds, or 157 pounds, or 71.2 kg.
No other major country uses stone, which makes it consistently confusing in international contexts. If a UK person says they weigh "12 stone," that's 76.2 kg or 168 lbs โ heavier than the raw number suggests to anyone using kg or lbs.
Common Weight Reference Points
| Weight | kg | lbs | stone |
|---|---|---|---|
| Average newborn | 3.4 kg | 7.5 lbs | 0 st 7.5 lbs |
| Average adult male (global) | 70 kg | 154 lbs | 11 st |
| Average adult female (global) | 60 kg | 132 lbs | 9 st 6 lbs |
| Boxing heavyweight limit | 90.7 kg | 200 lbs | 14 st 4 lbs |
| Average car | 1,400 kg | 3,086 lbs | 220 st |
Grams and Ounces for Cooking
Recipes from different countries use different units. US recipes typically use ounces and cups. European recipes use grams. 1 ounce = 28.35 grams. For cooking purposes, "1 oz โ 28g" is close enough for most recipes. 100g is approximately 3.5 oz. A standard US stick of butter is 113g (4 oz).
Frequently Asked Questions
What is the exact conversion factor for kg to lbs?
1 kg = 2.20462262185 lbs. For everyday use, 2.205 is precise enough. The factor is not a round number because kilogram (a metric unit) and pound (an Imperial unit) were defined independently, based on different physical references.
What's the difference between a metric ton and a US ton?
A metric tonne is exactly 1,000 kg (2,204.6 lbs). A US ton (also called a "short ton") is 2,000 lbs (907.2 kg). A British "long ton" is 2,240 lbs (1,016 kg). In international trade, "tonne" always means metric โ 1,000 kg. In US domestic contexts, "ton" typically means the short ton of 2,000 lbs.
How do I convert body weight from kg to stone and pounds?
Divide kg by 6.35029 to get stone (with decimal). The whole number is stones. Multiply the decimal part by 14 to get the remaining pounds. Example: 75 kg รท 6.35029 = 11.81 stone โ 11 stone and (0.81 ร 14) = 11 stone 11.3 lbs.
Why does my kitchen scale show different weights for the same ingredient?
Density varies. 1 cup of flour weighs about 120-130g depending on how it's scooped (packed vs spooned). 1 cup of water is exactly 236.6g. Volume measurements (cups, tablespoons) are ambiguous for dry ingredients โ weight in grams is more precise for baking.