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Daily Pet Food (kcal) from Pet Weight and Activity Level Calculator

DER = RER × multiplier; RER = 70 · BW_kg^0.75.

Estimate the daily caloric needs (DER, daily energy requirement) for a dog or cat: resting energy requirement RER = 70 · BW_kg^0.75, then multiplied by an activity factor (intact adult 1.6, neutered 1.4 — 1.6, active dog 2-5, working dog up to 8, weight loss 1.0, weight gain 1.7, growing puppy 2-3). Final daily ounces of dry food = DER / kcal_per_oz.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

kg
kcal/oz

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

DER = 70·BW^0.75 · factor.

In depth

Estimate the daily caloric needs (DER, daily energy requirement) for a dog or cat: resting energy requirement RER = 70 · BW_kg^0.75, then multiplied by an activity factor (intact adult 1.6, neutered 1.4 — 1.6, active dog 2-5, working dog up to 8, weight loss 1.0, weight gain 1.7, growing puppy 2-3). Final daily ounces of dry food = DER / kcal_per_oz.