We have been asked countless times questions such as the following:

"I buy Ingredient by Volume (e.g. liters or fluid ounces) but the nutrition data won't calculate unless I define a weight, what do I do?"


"I'm working with the nutrition label for my salad dressing recipe. It is requiring me to enter a weight. Most commercial dressings show a serving size in tbsp or ml. What do I do?"

There are a few reasons why we require a weight to be defined for ingredients that you use to calculate nutrition data. These reasons include:

  1. The largest publicly available sources of nutrient data (formerly the USDA Nutrient Database, and now Food Data Central) uses 100 grams (a weight) as the base measurement of nutrition data for pretty much every ingredient contained within.
  2. Undeniably, the most accurate way to measure any ingredient for a recipe or a nutrition label is by weight. Measuring any ingredient by volume can result in significant errors due to measuring cups and spoons of non-standard sizes, differences between metric cups vs. imperial cups, etc. Grams are an absolute an universal standard for measuring nutrition data.

So what do you do?

The easiest way to solve this problem is to create a measurement converter in your ingredient to convert between weight and volume.

We offer a two minute video to help you get this sorted out:

If our software is not able to help provide an automatic measurement converter, the above video is still helpful. There are many other ways to determine this information including:

  1. Do a simple google search (e.g. "how much does 32 floz of caesar salad dressing weight") 
  2. Try Wolfram Alpha -- go to the site, type in something like "1 liter of caesar salad dressing in grams"
  3. Weigh it manually on a kitchen scale.

Still have questions? Send us an email or a message using the chat box!

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