In cardiac diets sodium is compared as a density per calorie. This tool turns the sodium percentage and the calorie figure on a pet food label into milligrams per 100 kcal, then compares that with the reference range for the stage your veterinarian gave you and with any cap you were told. It does not assign a stage, and it does not report daily intake in milligrams.
The math converts the percentage into milligrams per 100 g, divides by calories per 100 g and multiplies by 100. Reference ranges are below 100 for stage B (B1 and B2), below 80 for C and below 50 for D, all in milligrams per 100 kcal. These come from cardiac nutrition guidance built on consensus work through the American College of Veterinary Internal Medicine, and the figures are as of October 2026.
Restricting sodium too aggressively in the early stages activates the renin angiotensin aldosterone system and does harm, so lower is not better. The right figure for a stage and a drug regimen is set by a veterinarian. This tool is for reference only and does not replace veterinary care. Contact your veterinarian right away if you notice symptoms or suspect a problem.
Frequently Asked Questions
No. Cutting sodium hard in the early stages activates the renin angiotensin aldosterone system and does harm. The goal is to stay inside the range for the stage.
Staging comes from a cardiac workup done by a veterinarian. Leave the stage unselected, work out the density and bring that number to your appointment.
No. It reads the label of one food only. Sodium from treats, chews and medication has to be reviewed separately with your veterinarian.