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Converting Between Weight and Volume

  • Updated

Available in: Agile-Free | Aware | Analyzer | Multi-Outlet 

 

To calculate food costs accurately, you need to match how ingredients are purchased with how they’re used. Many ingredients are bought by weight but portioned by volume. If you buy flour by the pound and measure it by the cup, you need a reliable conversion to determine cost per use.

Without that conversion, you risk miscalculating ingredient costs. That can throw off your budget, lead to inconsistent prep, and affect portion control. Converting between weight and volume keeps your costs accurate and your kitchen consistent.​

 

Setting Up Conversions

You can convert between weight and volume when an ingredient’s purchase unit doesn’t match how it’s used in recipes. reciProfity lets you create conversions manually or pull them from the Book of Yields. These conversions also account for shrinkage, which affects the actual cost of your ingredients.

 

To set up conversions:

  1. Click the hamburger menu in the top-left corner.
  2. Select Ingredient List.
  3. Search for the ingredient you want to convert.


  4. Click the ingredient name to open Ingredient View Mode.


  5. Click Edit to open Edit Mode.


  6. Scroll to the Conversions section. This section lets you:
    • Convert weight to volume and volume to weight.
    • Apply yield percentages and shrinkage to calculate actual cost.

 

Using the Book of Yields

The Book of Yields helps you convert ingredients between weight and volume while accounting for shrinkage and yield. Here's how to use it in reciProfity:

1. Locate Your Ingredient

  • Open the Book of Yields dropdown.
  • Click +Add Book of Yields Conversion.
  • Type the ingredient name. You may need to be specific—typing “cheese” won’t show “mozzarella,” but “mozzarella” will.
    conversions.png

 If your ingredient is not listed in the Book of Yields, you can create a manual conversion. 

2. Choose the Right Entry

  • The first item is typically the whole ingredient.
  • Additional entries reflect prep styles (e.g., “Cauliflower, Cut 1" florets”).

For example:

  • A whole head of cauliflower weighs about 30 oz.
  • After trimming and cleaning, you lose 40%—leaving a 60% yield.



  • The cost per ounce increases from $0.086 to $0.144 due to shrinkage.

3. Apply the Conversion

  • Click +Add Book of Yields Conversion again and select the prep style (e.g., “Cauliflower, Cut 1" florets”).
  • The Book of Yields will calculate both weight-to-volume and volume-to-weight conversions, adjusted for shrinkage.

4. View Conversions

  • In Ingredient View Mode, scroll to the Conversions section to see the applied values.

 

 

Creating Manual Conversions and Understanding Shrinkage & Yield

Manual conversions are useful when your ingredient isn’t listed in the Book of Yields or when you want to apply custom shrinkage values.

1. Add a Manual Conversion

  • Click +Add Manual Conversion in the Conversions section.

2. Enter Shrinkage Details

Let’s use butter as an example:

  • You purchase butter by the 1 lb brick and use it the same way.
  • However, you estimate a 5% shrinkage—from residue left on the wrapper, cutting board, or utensils.

To account for this:

  • In the “There Are” field, enter 1 lb
  • In the “Per” field, enter lb
  • In the “Yield” field, enter 95 (for 95% yield)

reciProfity will automatically calculate the After-Shrink cost.

3. Understand the Cost Impact

With a 95% yield:

  • Only 0.95 lbs of usable butter comes from a 1 lb brick.
  • If the original cost is $2.577/lb, the adjusted cost becomes $2.692/lb.
  • That’s an increase of $0.135/lb to account for the 5% loss.

While butter may not always require this level of precision, it illustrates how shrinkage affects cost. If your recipe demands exactly 1 lb of usable butter, you may need to open a second brick to make up for the loss.

4. Apply the Same Logic to Other Ingredients

Take cauliflower, for example:

  • A 40% shrinkage means only 0.6 lbs of usable product per 1 lb purchased.
  • The cost per ounce increases from $0.086 to $0.144.

Even small differences like these can add up significantly over time. As the saying goes:
“Look after your pennies, and the dollars will take care of themselves.”

 

Apply Conversions in Recipes

When an ingredient is purchased in one unit (like pounds) but used in another (like cups), and shrinkage is involved, you can set up a conversion that accounts for both unit change and yield percentage.

Example: Butter

You buy butter by the pound but use it in recipes by the cup. You also estimate a 5% shrinkage during prep.

To set up the conversion:

  • In the “There Are” field, enter 2 (there are 2 cups of butter per pound).
  • In the “Per” field, enter lb.
  • In the “Yield%” field, enter 95.

reciProfity will calculate the After-Shrink cost per cup, which in this example is $1.346.

With this conversion in place, reciProfity can now accurately calculate costs for any weight or volume measurement involving butter—no additional conversions needed.

In Ingredient View Mode, you’ll see this conversion listed under the Conversions section:

 

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