How to convert lbs to kg
- 1 Type a value in the pounds box; the kilograms appear as you type.
- 2 Or type in the kilograms box to convert the other way.
- 3 Use the conversion table below for common values, or copy the result.
Converting US weights
US products, gym plates and shipping labels are in pounds. Multiply by 0.4536 for kilograms; for small amounts in ounces, use Ounces to Grams. Babies are often weighed in pounds and ounces, so add the ounces divided by 16 to the pounds before converting.
Converting the other way? Use KG to Lbs. For stone and other units, the Weight Converter shows them all.
- US nutrition labels give serving sizes in ounces and grams, so use grams for accuracy.
- Shipping firms round up to the next whole pound or kilogram, so check which unit they bill in.
- For medicine, always follow the dose in the unit the pharmacist gives; do not convert it yourself.
Features
Exact factor
1 lb = 0.45359237 kg by international agreement.
Two-way
Type kilograms to get pounds.
Weight chart
Common values from 1 lb up to 500 lb.
When to use it
Following a US workout
Programmes written in pounds: a 135 lb bench press is 61.2 kg. Converting the other way? Use KG to Lbs.
Newborn weight
Babies are often weighed in pounds and ounces; 7 lb 8 oz is 7.5 lb, or 3.4 kg. Need ounces in grams? See Ounces to Grams.
Shopping online
US product listings and shipping weights are in pounds; a 5 lb parcel is 2.27 kg.
Checking product weights
Appliances, bikes and furniture from US sellers list weight in pounds. A 45 lb treadmill box is 20.4 kg, useful to know before you carry it upstairs or pay delivery by weight.
Related Unit tasks
Frequently asked questions
How do I convert lbs to kg?
Multiply pounds by 0.45359237. 150 lb × 0.45359237 = 68.04 kg.
How many kg is 1 lb?
1 pound is 0.4536 kg, a little under half a kilogram.
How many kg is 200 lbs?
200 lb is 90.72 kg.
Is there a quick way to estimate?
Halve the pounds and take away 10% of that. 180 lb halved is 90, minus 9 is 81 kg; the exact answer is 81.65 kg.
How do I convert pounds and ounces to kg?
Divide the ounces by 16 and add them to the pounds, then multiply by 0.4536. 8 lb 4 oz is 8.25 lb, or 3.74 kg.
How many pounds are in a stone?
14 pounds, so 11 stone is 154 lb or 69.85 kg.
Why are there two pounds?
The everyday avoirdupois pound is used here. The troy pound, once used for precious metals, is about 373 g and is no longer in general use.
How many kg is 100 lbs?
100 lb is 45.36 kg.
How many kg is 160 lbs?
160 lb is 72.57 kg.
How do I convert a US recipe that uses pounds?
Multiply each weight in pounds by 0.4536 to get kilograms, or by 453.6 to get grams. Half a pound of mince is 227 g.
Why do Americans use pounds?
The United States never fully adopted the metric system for everyday use, so body weight, groceries and gym equipment are still labelled in pounds, while science and medicine use kilograms.
Should I round the answer?
For body weight one decimal place is plenty. For medicine doses or shipping charges, use the exact figure or the rounding rule set by the pharmacist or courier.
Why does my scale show a different number in each unit?
It should not. The scale weighs once and only changes the display unit. If the two readings disagree after converting, the scale may need a new battery or calibration on a flat, hard floor.
Built and reviewed by Hamza Farooq, founder and lead developer
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