Dog Weight Legacy Planning Calculator

The Dog Weight Legacy Planning Calculator displays a stored breed-table midpoint and interval as legacy planning arithmetic, not a veterinary target, diagnosis, or feeding plan. The retained 15-row table is named oc-dog-legacy-planning-v1. Use it only to inspect a stored planning interval and its midpoint. The numbers are unsupported legacy assumptions, not healthy, ideal, growth, feeding, or veterinary targets.

Entries and result

Choose one of the 15 listed breeds, enter age from 0 to 30 years, current weight, kilograms or pounds, and one of the three condition labels. The starting entries are Labrador Retriever, age 3, 30 kg, and “ideal.”

The midpoint is the average of the stored lower and upper values:

$\text{legacy midpoint}=\frac{\text{stored minimum}+\text{stored maximum}}{2}$

Current pounds are converted to kilograms with kg=lb×0.453592 before being described as below, within, or above the stored interval. The interval itself is multiplied by 2.20462 when pounds are selected.

For the Labrador row, the stored interval is 25–36 kg:

$\frac{25+36}{2}=30.5\text{ kg}$

With a current weight of 30 kg, the result is 30.5 kg, an interval of 25.0–36.0 kg, and “within legacy interval.” In pounds, the same stored row is shown as a 67.2 lb midpoint and 55.1–79.4 lb interval.

What the controls do not do

Age and the three-choice condition control do not alter the midpoint or interval. The labels therefore must not be read as age adjustments or body-condition assessment. A validated 9-point assessment uses ribs, waist, and abdominal tuck; this three-choice control is not a WSAVA body-condition score.

Decision checklist

• Use the result only to identify the exact legacy table row being discussed.
• Keep current weight separate from the table midpoint.
• Do not use “below,” “within,” or “above” as a health conclusion.
• For an unexplained change, growth question, body-condition concern, or feeding decision, take the recorded weight and observations to a veterinarian.

For feeding arithmetic from a current weight, see the pet food calculator; to budget food, veterinary, and supply costs, see the pet care cost calculator.

The relevant next task is patient-specific veterinary assessment, not another weight formula. Breed, sex, growth stage, body condition, and clinical context are outside this table.

Source

• WSAVA, Body Condition Score for Dogs (2025) — qualitative 9-point assessment using ribs, waist, and abdominal tuck; it does not support this route’s legacy breed table.