In English-speaking countries the Saxon system of units (or English system or the British imperial system) is used. Although the name of some units are the same as in the traditional system, they should not be confused as they are different.

## Measurements of length

Name | Equivalence |

Inch | 2.45 cm |

Foot | 12 inches |

Yard | 3 feet |

Fathom | 2 yards |

Terrestrial mile | 880 fathoms |

Nautical mile | 1853 meters |

To convert a unit into another we will use the equivalences column.

Convert $$30$$ fathoms into yards, looking at the column equivalences and reveals:

$$1$$ fathom $$=2$$ yards.

Therefore:

$$30$$ fathoms $$=30\cdot2$$ yards $$=60$$ yards.

And so, $$30$$ fathoms are $$60$$ yards.

## Measurements of capacity

Name | Equivalence |

Pint (Great Britain) | 0.568 liters |

Pint (USA) | 0.473 liters |

Barrel | 159 liters |

To convert one measurement to liters (which is the measurement of capacity of the decimal metric system), use the column of equivalence.

To convert $$600$$ pints (of the USA) into liters, we have: $$1$$ pint $$= 0,473$$ liters, and then:

$$600$$ pints $$=600 \cdot 0,473$$ liters $$=283,8$$ liters.

Therefore $$600$$ pints are $$283,8$$ liters.

## Measurements of mass

Name | Equivalence |

Ounce | 28.3 grams |

Pound | 454 grams |

To convert into grams we will use the equivalence column.

To convert $$4$$ ounces into grams, perform the following procedure: $$1$$ ounce $$= 28,3$$ grams.

Therefore:

$$4$$ ounces $$=4 \cdot 28,3$$ grams $$=113,2$$ grams.

And so, we have that $$4$$ ounces are $$113,2$$ grams.

## Measurements of surface

In this case, there is only the acre, which is equivalent to $$4047 \ \mbox{m}^2.$$