# How Many Grams in an Ounce

There are 28.3495231 grams of the metric system in one ounce of the British Imperial and US Standards for weights and measures.

**1 ounce = 28.3495231 grams**

**1 troy ounce = 31.1034768 grams**

Ounce (abbr. oz) is a widely-spread unit of mass or volume (fluid ounce), which is used in various systems and has several definitions. The most regular definition of this unit is equivalent to approximately 28 grams. There are 16 ounces in an avoirdupois pound. In 1958 the US (United States) and countries of the Commonwealth of Nations defined the mass of the international pound to be 0.453 592 37 kilograms. Since 1958, the international ounce is defined to be equal to about 28.349523 grams. The ounce is commonly used as a unit of mass in the US. While imperial units have been officially abolished in the UK, the ounce still remains as a unit of mass in some applications.

## Ounces To Grams Chart

Ounce |
Gram |
---|---|

1 Ounce = | 28.3495231 Gram |

2 Ounce = | 56.6990462 Gram |

3 Ounce = | 85.0485693 Gram |

4 Ounce = | 113.3980924 Gram |

5 Ounce = | 141.7476155 Gram |

6 Ounce = | 170.0971386 Gram |

7 Ounce = | 198.4466617 Gram |

8 Ounce = | 226.7961848 Gram |

9 Ounce = | 255.1457079 Gram |

10 Ounce = | 283.495231 Gram |

11 Ounce = | 311.8447541 Gram |

12 Ounce = | 340.1942772 Gram |

13 Ounce = | 368.5438003 Gram |

14 Ounce = | 396.8933234 Gram |

15 Ounce = | 425.2428465 Gram |

16 Ounce = | 453.5923696 Gram |

17 Ounce = | 481.9418927 Gram |

18 Ounce = | 510.2914158 Gram |

19 Ounce = | 538.6409389 Gram |

20 Ounce = | 566.990462 Gram |