Enter the carat weight and the price per carat ($/carat) into the Calculator. The calculator will evaluate the Carat Cost. 

Carat Cost Formula



  • CC is the Carat Cost ($)
  • CW is the carat weight
  • PPC is the price per carat ($/carat)

To calculate the Carat Cost, multiply the carat weight by the price per carat.

How to Calculate Carat Cost?

The following steps outline how to calculate the Carat Cost.

  1. First, determine the carat weight. 
  2. Next, determine the price per carat ($/carat). 
  3. Next, gather the formula from above = CC = CW * PPC.
  4. Finally, calculate the Carat Cost.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

carat weight = 30

price per carat ($/carat) = 200

Frequently Asked Questions

What is a carat, and how does it relate to gemstones?

A carat is a unit of weight used to measure gemstones and pearls. One carat is equivalent to 200 milligrams. The value and rarity of a gemstone can significantly increase with its carat weight.

How does the price per carat affect the overall cost of a gemstone?

The price per carat is a critical factor in determining the overall cost of a gemstone. As the carat weight increases, the price per carat can also increase, leading to a higher total cost. This is due to larger gemstones being rarer and more desirable.

Are there any other factors that affect the cost of gemstones besides carat weight?

Yes, several factors affect the cost of gemstones besides carat weight. These include the gemstone’s color, clarity, cut, and rarity. For example, a gemstone with exceptional clarity and a high-quality cut may be more valuable, even if it has a lower carat weight.

Can the Carat Cost formula be used for any type of gemstone?

Yes, the Carat Cost formula (CC = CW * PPC) can be used for any type of gemstone, as long as you know the carat weight (CW) and the price per carat (PPC). It provides a straightforward method to calculate the cost of a gemstone based on its weight and per-carat price.