Pounds to kilograms conversion table
Every row is computed with the exact factor the converter above uses:
1 lb = 0.453592 kg (kg = lb × 0.453592).
Looked-up values are rounded to 2 decimals;
type any amount into the tool for other pounds values.
| lb | kg |
|---|---|
| 0.5 lb | 0.23 kg |
| 1 lb | 0.45 kg |
| 2 lb | 0.91 kg |
| 2.2 lb | 1 kg |
| 3 lb | 1.36 kg |
| 4 lb | 1.81 kg |
| 5 lb | 2.27 kg |
| 6 lb | 2.72 kg |
| 7 lb | 3.18 kg |
| 8 lb | 3.63 kg |
| 9 lb | 4.08 kg |
| 10 lb | 4.54 kg |
| 11 lb | 4.99 kg |
| 12 lb | 5.44 kg |
| 13 lb | 5.9 kg |
| 14 lb | 6.35 kg |
| 15 lb | 6.8 kg |
| 16 lb | 7.26 kg |
| 17 lb | 7.71 kg |
| 18 lb | 8.16 kg |
| 19 lb | 8.62 kg |
| lb | kg |
|---|---|
| 20 lb | 9.07 kg |
| 25 lb | 11.34 kg |
| 30 lb | 13.61 kg |
| 40 lb | 18.14 kg |
| 50 lb | 22.68 kg |
| 60 lb | 27.22 kg |
| 70 lb | 31.75 kg |
| 75 lb | 34.02 kg |
| 80 lb | 36.29 kg |
| 90 lb | 40.82 kg |
| 100 lb | 45.36 kg |
| 110 lb | 49.9 kg |
| 115 lb | 52.16 kg |
| 120 lb | 54.43 kg |
| 125 lb | 56.7 kg |
| 130 lb | 58.97 kg |
| 135 lb | 61.23 kg |
| 140 lb | 63.5 kg |
| 145 lb | 65.77 kg |
| 150 lb | 68.04 kg |
| 155 lb | 70.31 kg |
| lb | kg |
|---|---|
| 160 lb | 72.57 kg |
| 165 lb | 74.84 kg |
| 170 lb | 77.11 kg |
| 175 lb | 79.38 kg |
| 180 lb | 81.65 kg |
| 185 lb | 83.91 kg |
| 190 lb | 86.18 kg |
| 195 lb | 88.45 kg |
| 200 lb | 90.72 kg |
| 210 lb | 95.25 kg |
| 220 lb | 99.79 kg |
| 225 lb | 102.06 kg |
| 230 lb | 104.33 kg |
| 240 lb | 108.86 kg |
| 250 lb | 113.4 kg |
| 275 lb | 124.74 kg |
| 300 lb | 136.08 kg |
| 350 lb | 158.76 kg |
| 400 lb | 181.44 kg |
| 500 lb | 226.8 kg |
| 1000 lb | 453.59 kg |
Going the other way? Use the kilograms to pounds converter.
Pounds to kilograms in one step
Going the other way from the usual American measurement? Plenty of forms, gyms, and clinics outside the US want your weight in kilograms, and a US scale only gives you pounds. This converts the two cleanly.
One factor does all the work. 1 pound = 0.453592 kilograms. Enter pounds, read kilograms. The dropdown lets you reverse it or bring in ounces and stones when a value mixes units.
The exact relationship
kilograms = pounds x 0.453592
Here’s the clean part: a pound is defined as exactly 0.45359237 kg by international agreement. So this isn’t an approximation that drifts. We carry enough decimals that even a 250 lb figure lands within a gram of the true value. Round to one decimal place for everyday use and nobody will ever notice.
The pound values people look up
Rather than reprint the table above, here are the rows worth remembering. 180 lb, a common US adult weight, is 81.65 kg. 150 lb is 68.04 kg. And 50 lb is the one shippers watch: it’s just under 22.7 kg and the breakpoint where many carriers drop standard rates for a heavy-package surcharge.
Real reasons people convert this direction
Moving US body weight to metric is the classic case. A doctor’s office abroad, a dive certification card, a pilot’s medical, a martial arts weight class, all of them usually log kilograms. Someone who weighs 175 lb is right around 79.4 kg. Lifters convert too: a 45 lb Olympic plate is 20.41 kg, and a 135 lb loaded bar (the 45 lb bar with a plate each side) works out to 61.23 kg.
Shipping and logistics lean on it hard. International couriers bill by kilogram and apply dimensional-weight rules in kg, so a warehouse pulling US pound figures off a scale has to convert before generating a label. Get it wrong and the quoted price won’t match what the carrier charges.
It also smooths out recipes and nutrition. A US recipe calling for 2 lb of potatoes becomes 0.91 kg, which matters if your kitchen scale is metric. Bulk grocery pricing flips the same way when you’re comparing a per-pound US price to a per-kilo one abroad.
Watch out for these
A pound (lb) is not a stone. UK weight charts often use stones, where 1 stone = 14 lb, so “13 stone 4” is 186 lb, about 84.4 kg. If you only convert the pounds portion and forget the stones, you’ll be way off.
Also keep ounces separate. There are 16 ounces in a pound, so 6 lb 8 oz is 6.5 lb, which is 2.95 kg. Convert the whole figure, not just the round pounds.
The tool does every calculation in your browser. Nothing you type is uploaded or stored on a server, and once the page is open it keeps working without a connection.
FAQ
How many kg is 1 pound?
About 0.453592 kg, a little under half a kilogram. So 2 lb is roughly 0.91 kg.
How many kg is 180 lb?
81.65 kg. It’s one of the most-typed body-weight conversions, and 200 lb right above it is 90.72 kg.
What’s 150 lb in kg?
68.04 kg. Drop to 100 lb and you’re at 45.36 kg, so every 50 lb is roughly 22.7 kg.
What’s the quick mental version?
Halve the pounds, then trim off around 10 percent. 100 lb halves to 50, minus 5, gives about 45 kg. The exact figure is 45.36.
Is this accurate enough for medical or legal use?
Yes. The factor is an exact international definition and we show several decimals, so the result is precise to within a gram for normal ranges.
How do I convert pounds and ounces together?
Turn the ounces into a decimal first (divide by 16), add it to the pounds, then convert. 8 lb 4 oz is 8.25 lb, which is 3.74 kg.
Is anything sent to a server?
No. It’s all client-side math, so your weight values never leave the device.