Batch Scaling Calculator

About the Batch Scaling Calculator

Scales a recipe or production batch ingredient from a base batch size to a target batch size.

How to use this calculator

1. Enter the original amount for one ingredient in the base batch, which is the amount you already know.
2. Enter the base batch size and the target batch size using the same unit or yield type, such as servings, liters, or units.
3. Let the calculator multiply the ingredient amount by the scale factor, which is \(\frac{\text{target}}{\text{base}}\).
4. Check the new amount for each ingredient, then repeat for the rest of the batch.

The formula explained

The formula finds the scaled amount of one ingredient by multiplying the original ingredient amount by the ratio \(\frac{\text{target}}{\text{base}}\). This tells you how much of that ingredient you need for the new batch size.

• \(\text{new}\) = the adjusted amount for the target batch
• \(\text{ingredient}\) = the original amount of one ingredient in the base batch
• \(\text{target}\) = the desired batch size or yield
• \(\text{base}\) = the original batch size or yield

Step by step method

1. Start with the ingredient amount from the original batch, then write the base batch size and target batch size.
2. Compute the scale factor as \(\frac{\text{target}}{\text{base}}\).
3. Multiply the original ingredient amount by that scale factor to get \(\text{new}\).

Worked example

Problem. A recipe uses \(2\) cups of flour for \(8\) servings. How much flour is needed for \(20\) servings?

1. Identify the values: \(\text{ingredient} = 2\) cups, \(\text{base} = 8\), and \(\text{target} = 20\).
2. Find the scale factor, \(\frac{20}{8} = 2.5\).
3. Multiply: \(2 \times 2.5 = 5\).

Tips and common mistakes

• Make sure the base and target are in the same unit before scaling, such as servings to servings or liters to liters.
• If you scale one ingredient, scale every ingredient by the same factor so the batch stays consistent.

Frequently asked questions