A conversion can look more precise than its inputs. If the original figures are rounded guarantees, label the result accordingly and avoid adding unnecessary decimal places.
What to check
| Check | What to verify |
|---|---|
| Inputs | Keep the original printed figures. |
| Method | Record the formula used. |
| Output | State that guarantee-based results are approximate. |
Use this checklist for your own comparison
Record product details, quotes or unanswered questions. Notes stay in this tab; download them before leaving.
Keep the original printed figures.
Record the formula used.
State that guarantee-based results are approximate.
A practical example
A calculation returning 27.272727% does not justify six decimal places when the label inputs were whole-number guarantees.
Before you decide
Arithmetic precision cannot repair uncertain source measurements.
For the broader task, see Dog-food label comparison.
Reference and scope
AAFCO: understanding pet-food labels provides background for this topic. Not an evaluation of a specific food or individual dietary suitability. The comparison prompts and examples above are practical planning aids, not reports of product testing.