# Pound (lb) and Kilograms (Kg) Conversion Calculator

An online lb (pound) and Kg (Kilogram) converter is presented. Problems involving conversions between pounds and Kg are also included.

In what follows a pound is abbreviated as "lb" and a kilogram as "Kg".

## Conversion Formula of Pound into Kg [1]

1 lb = 0.45359237 Kg

1 Kg = (1/0.45359237) lb = 2.20462262185 lb

## Examples of Conversion

Example 1 - Convert 12.5 lb into Kg and round answer to 1 decimal place.

12.5 lb = 12.5 × 0.45359237 Kg = 5.669904625 Kg

Round to 1 decimal place

12.5 lb = 5.7 Kg

Example 2 - Convert 1.56 kg into lb and round answer to 1 decimal place.

1.56 kg = 1.56 × 2.20462262185 lb = 3.43921129009 lb

Round to 1 decimal place

1.56 kg = 3.4 lb

## Use of lb and kg Conversion Calculators

Enter the number of pounds (lb) or kilograms (kg) to be converted and convert.

## Problems Involving lb and Kg Conversions

Problem 1

A cow consumes 2% of its body weight daily. How many days will 10,000 Kg of cow feed last for a cow whose weight is 1600 lb? Round your answer to the nearest whole number.

Solution

Let W be 2% of the body weight of the cow. Hence

W = 2% × 1600 lb = 32 lb

Convert the cow feed available to lb

10,000 Kg = 10,000 × 2.20462262185 lb = 22046.2262185 lb

The number N of days that 22046.2262185 lb will feed a cow that consumes 32 lb daily is given by

N = ( 22046.2262185 lb ) / ( 32 lb) = 688.944569328 days.

Round the answer to the nearest whole number of days

N = 689 days

Problem 2

A restaurant uses 5 Kg of potatoes and 2 Kg of carrots every day. The potatoes are sold in bags of 5 lb and the carrots are sold in bags of 0.5 lb. A bag of potatoes costs $7 and a bag of carrots cost $3.

How much does this restaurant spend on potatoes and carrots in 30 days?

Solution

In 30 days

30 × 5 Kg = 150 Kg of potatoes are used

Convert 150 Kg into pounds

150 Kg = 150 × 2.20462262185 lb = 330.693393277 lb

Number N1 of bags of potatoes corresponding to 330.693393277 lb is given by

N1 = ( 330.693393277 lb ) / ( 5 lb) = 66.1386786554

Round to the nearest higher whole number

N1 = 67 bags of potatoes

In 30 days

30 × 2 Kg = 60 Kg of carrots are used

Convert 60 Kg into pounds

60 Kg = 60 × 2.20462262185 lb = 132.277357311 lb

Number N2 of bags of carrots corresponding to 132.277357311 lb is given by

N2 = ( 132.277357311 lb )/( 0.5 lb ) = 264.554714622

Round to the nearest higher whole number

N2 = 265 bags of carrots

The cost C of the potatoes and carrots in 30 days is given by

C = N1 × $7 + N2 × $3 = 67 × $7 + 265 × $3 = $1264

Problem 3

One pound of boneless chicken costs $10. How much does a kilogram of boneless chicken cost?

Solution

We need to convert $10 / pound into $x/ kg. Find x

1 pound = 0.45359237 Kg

Substitute pound by 0.45359237 Kg and write the cost as

$10 / pound = $10 / 0.45359237 Kg

Divide 10 by 0.45359237 to obtain the price P per kg as

P = $22.0462262185 / kg

to the nearest cent, the price of boneless chicken is

P = $22.05 / kg

## More References and links

- www.nist.gove.pdf
- Units Conversion and Calculators
- Math Calculators and Solvers.