Dog Weight Goal
Free Dog Weight Goal calculator with clear step-by-step results.
About Dog Weight Goal
The starting problem with a canine weight goal is that you rarely know the target weight — so it is derived from body condition score instead. On the standard 9-point scale, 5 is ideal and each point above it corresponds to roughly 10% over ideal weight, so a dog scored 7 is about 20% overweight and its ideal weight is current ÷ 1.2. Feeding is then set from resting energy requirement at that target weight, 70 × kg^0.75, with a factor for how restrictive the plan needs to be.
Formulas
Ideal weight from condition score
Ideal weight = current weight ÷ (1 + (BCS − 5) × 0.1)
Feeding and timeline
Target kcal = 70 × ideal weight^0.75 × factor; weeks = weight to lose ÷ (current × weekly loss %)
Worked example
With the default values below, Dog Weight Goal returns Estimated Ideal Weight of 26.67. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Current weightminimum 0.5 kg
- 32 kg
- Body condition score (1-9)accepts 1–9
- 7
- Target weekly lossaccepts 0.5–3 %
- 1.5 %
- Weight-loss energy factoraccepts 0.6–1.6
- 1
Results
- Estimated Ideal Weight
- 26.67 kg
- Weight to Lose
- 5.33 kg
- Weeks to Reach the Goal
- 11.1 weeks
- Weight-Loss Feeding Allowance
- 821 kcal/day
Step by step
- 1Values used
- 2Ideal weight from condition score
- 3Feeding and timeline
- 4Estimated Ideal Weight= 26.67 kg
- 5Weight to Lose= 5.33 kg
- 6Weeks to Reach the Goal= 11.1 weeks
- 7Weight-Loss Feeding Allowance= 821 kcal/day
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
- Weight-loss plans for dogs should be set and monitored by a veterinarian, who will rule out medical causes of weight gain such as hypothyroidism and ensure the diet remains complete in protein and micronutrients while calories are restricted.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Weight-loss plans for dogs should be set and monitored by a veterinarian, who will rule out medical causes of weight gain such as hypothyroidism and ensure the diet remains complete in protein and micronutrients while calories are restricted.
Frequently Asked Questions
How is body condition score assessed?
By feel and outline rather than by weight: ribs easily palpable without a fat covering, a visible waist from above and an abdominal tuck from the side all indicate a score of 5. Your vet can show you how to score consistently.
Why does each BCS point mean about 10%?
It is the widely used clinical convention on the 9-point WSAVA scale, derived from studies relating condition score to measured body fat. It is an approximation, which is why the derived ideal weight should be confirmed with a vet.
How fast can a dog safely lose weight?
Generally 1-2% of body weight per week. Faster loss risks muscle rather than fat loss and is harder to sustain; dogs tolerate restriction better than cats but still need monitoring.