# Gold Weight Calculator

Table of contents

Gold standards — finenessHow to calculate gold weight – Weight of a gold coinExample: Using the gold weight calculatorFAQsThe gold weight calculator will return the **amount of gold or silver you need to make basic shapes** like wires, cylinder bars, or sheets out of the precious metals. The calculator takes into account the dimensions of the basic shapes and estimates the volume. You can select from **different types of gold standards** to find the **mass of gold or silver** needed to build the chosen shape. You can also enter the cost of gold or silver per unit mass to **estimate the expenses**. Read on to understand how to calculate gold weight for coins or bars.

🔎 Also, check out our gold melt calculator to find the value of the gold based on its weight and purity.

## Gold standards — fineness

Before estimating the mass and cost for the project, let's look at different **gold standards** to understand the calculation of gold weight. **Fineness denotes the purity of a precious metal like gold**, platinum, and silver. Often **impurities are added** to the pure or base metal **to improve the overall properties**. Such contaminants help **enhance the durability and hardness** of the objects made out of them. It also helps in introducing **different colors and reduces the costs** of jewelry or other products.

The fineness is denoted in the **purity of platinum, gold, or silver alloy by parts per thousand of pure metal**. For instance, the **minimum gold standard is 333**, which **contains 33.3% of pure gold and 66.6% of other alloys**. Similarly, other standards for gold are:

Fineness | Karat | Percentage |
---|---|---|

999 | 24 | 99.95% |

958.3 | 23 | 95.83% |

916 | 22 | 91.66% |

834 | 20 | 83.33% |

750 | 18 | 75.00% |

625 | 15 | 62.50% |

583.3 | 14 | 58.33% |

417 | 10 | 41.70% |

375 | 9 | 37.50% |

333 | 8 | 33.33% |

The gold also has a **karat system** (`k`

), which is the **measure of gold purity in parts per 24 parts whole**. Mathematically:

where:

- $K$ — Karat rating of material;
- $M_g$ — Mass of pure gold in the alloy; and
- $M_m$ — Total mass of material.

## How to calculate gold weight – Weight of a gold coin

To calculate gold weight:

- Select the
**shape**from the list —**sheet, wire, cylinder, or rondelle**. - Select the
**material**to pick fineness, or you can directly enter the**density of the material**(after selecting`Enter a custom density`

first). - Enter the
**percent of material wasted**during melting and fabrication. - Fill in the
**respective dimensions of the shapes**. - The gold weight calculator will return the
**mass of the object**using the volume. - Insert the
**cost per unit mass**for the metal/alloy to receive a cost estimate. - The calculator will return the
**cost of material used**.

The calculator covers the basic shapes, and if you wish to try other forms, such as the weight of a gold bar, you can try our metal weight calculator. Otherwise, if you know the price of your gold bar, you can use this tool as a gold price per gram calculator. If you're interested in how much a certain amount of money would weigh in various denominations, you can check out the money weight calculator.

**Metal costs**

The cost estimate considers the wastage; therefore, it is the cost of the material used, not the cost of the shape fabricated.

## Example: Using the gold weight calculator

Calculate the mass and cost of a sheet having the following dimensions: $1 \text{ m} \times 0.5 \text{ m} \times 5 \text{ mm}$ made using the fine gold. Take the wastage percentage as `5%`

and the price of gold as `$65.56 / g`

.

To calculate gold weight:

- Select the
**shape**from the list as**sheet**. - Select the
**material**to pick fineness as`Gold - fine`

. - Enter the
**percent of material wasted**as`5%`

. - Fill in the sheet's
**length, width, and thickness**as`1 m`

,`0.5 m`

, and`5 mm`

, respectively. - The gold weight calculator will return the
**mass of the object**, after accounting for wastage as`45.84 kg`

.

- Insert the
**cost per unit mass**for the fine gold as`$65.56 / g`

. - The calculator will return the
**cost of material used**as`$3,163,270`

.

### What do you mean by 18 karat gold?

18 karat gold refers to the **18 parts of pure gold per 24 parts whole**. In other words, the 18 karat gold contains `18 / 24 = 0.75`

or ** 75% of pure gold**, and the rest 25% is an acceptable alloy like copper, zinc, or nickel.

### How do I calculate mass of a gold sheet?

To calculate the mass of a gold sheet:

**Multiply**the**length, width, and thickness**to obtain the**volume**of the gold sheet.- Find the
**density**of the gold using the fineness or karat value. **Multiply**the**density**and**volume**to obtain the mass of the gold sheet.

Similarly, you can also find the weight of the gold bar or any other shape using its dimensions.

### What do you mean by gold fineness?

Gold fineness refers to the **amount of pure gold in the whole per thousand parts**. It is represented as 333, 585, 916, or 999. The `999`

is the purest gold in quality and the most expensive. The minimum acceptable gold standard is the `333`

or `8`

karat gold.

### How do I find karat value from mass of gold?

To find the karat value from the mass of gold:

**Divide**the**mass of pure gold**in the alloy by**the total mass**.**Multiply**the resultant by**24**to obtain the**karat value**from the**mass of gold**.