This is another good tool that will really help you determine how far off you may be when planning out your meals. With all of these tools I do not think you have to use them daily, but they are a great reminder of what we should be eating instead of guessing. Many times we can guess at the foods we eat and what they might cost in calories. In some cases we can be surprised by the number of calories a particular item contains. This tool can help to reduce the error factor when calculating the daily intake.