# 40 stones to pounds

## Result

40 stones equals 560 pounds

## Conversion formula

Multiply the amount of stones by the conversion factor to get the result in pounds:

40 st × 14 = 560 lbs

## How to convert 40 stones to pounds?

The conversion factor from stones to pounds is 14, which means that 1 stones is equal to 14 pounds:

1 st = 14 lbs

To convert 40 stones into pounds we have to multiply 40 by the conversion factor in order to get the amount from stones to pounds. We can also form a proportion to calculate the result:

1 st → 14 lbs

40 st → m(lbs)

Solve the above proportion to obtain the mass m in pounds:

m(lbs) = 40 st × 14 lbs

m(lbs) = 560 lbs

The final result is:

40 st → 560 lbs

We conclude that 40 stones is equivalent to 560 pounds:

40 stones = 560 pounds

## Result approximation

For practical purposes we can round our final result to an approximate numerical value. In this case forty stones is approximately five hundred sixty pounds:

40 stones ≅ 560 pounds

## Conversion table

For quick reference purposes, below is the stones to pounds conversion table:

stones (st) pounds (lbs)
41 stones 574 pounds
42 stones 588 pounds
43 stones 602 pounds
44 stones 616 pounds
45 stones 630 pounds
46 stones 644 pounds
47 stones 658 pounds
48 stones 672 pounds
49 stones 686 pounds
50 stones 700 pounds

## Units definitions

The units involved in this conversion are stones and pounds. This is how they are defined:

### Stones

The stone or stone weight (abbreviation: st.) is an English and imperial unit of mass now equal to 14 pounds (6.35029318 kg). England and other Germanic-speaking countries of northern Europe formerly used various standardised "stones" for trade, with their values ranging from about 5 to 40 local pounds (roughly 3 to 15 kg) depending on the location and objects weighed. The United Kingdom's imperial system adopted the wool stone of 14 pounds in 1835. With the advent of metrication, Europe's various "stones" were superseded by or adapted to the kilogram from the mid-19th century on. The stone continues in customary use in Britain and Ireland used for measuring body weight, but was prohibited for commercial use in the UK by the Weights and Measures Act of 1985.

### Pounds

The pound or pound-mass is a unit of mass used in the imperial, United States customary and other systems of measurement. A number of different definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces. The international standard symbol for the avoirdupois pound is lb; an alternative symbol is lbm (for most pound definitions), # (chiefly in the U.S.), and ℔ or ″̶ (specifically for the apothecaries' pound). The unit is descended from the Roman libra (hence the abbreviation "lb"). The English word pound is cognate with, among others, German Pfund, Dutch pond, and Swedish pund. All ultimately derive from a borrowing into Proto-Germanic of the Latin expression lībra pondō ("a pound by weight"), in which the word pondō is the ablative case of the Latin noun pondus ("weight"). Usage of the unqualified term pound reflects the historical conflation of mass and weight.