## Yarn Substitution Calculator

Enter the following values:

To calculate yarn substitution, you can use the following formula:

**(New Yarn Length) = (New Yarn Weight) × (New Yarn Length per Weight) (Original Yarn Length) = (Original Yarn Weight) × (Original Yarn Length per Weight)**

where:

- New Yarn Length: The estimated length of the new yarn you want to use.
- New Yarn Weight: The weight (in grams or ounces) of the new yarn you want to use.
- New Yarn Length per Weight: The length of the new yarn per unit weight (e.g., meters per gram or yards per ounce).
- Original Yarn Length: The length of the original yarn specified in the pattern.
- Original Yarn Weight: The weight (in grams or ounces) of the original yarn specified in the pattern.
- Original Yarn Length per Weight: The length of the original yarn per unit weight (e.g., meters per gram or yards per ounce).

By substituting the values into the formula, you can determine the estimated length of the new yarn needed to achieve the same length as the original yarn specified in the pattern.

Keep in mind that this formula provides an estimate, and there may be variations in yarn thickness, tension, and other factors that can affect the final outcome. It’s always a good idea to make a gauge swatch before starting a project to ensure your yarn substitution will result in the desired dimensions and appearance.

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