Free tools
Calculators, not guesswork.
Five free calculators built on the same formulas veterinary nutritionists use. Nothing to sign up for, nothing saved.
Daily calorie calculator
RER = 70 × (kg)^0.75, multiplied by a life-stage factor (NRC / AAHA method).
Resting need ≈ 662 kcal/day · Daily target ≈ 1059 kcal/day. Keep treats under 106 kcal (10%).
Water intake calculator
A healthy dog or cat drinks roughly 50–60 ml per kg per day; more in heat or on dry food.
Expect about 1100 ml/day (range 1000–1200 ml). Persistent drinking well above this is worth a vet visit.
Healthy weight estimator
Body condition score (BCS) 5/9 is ideal; each point above adds roughly 10% body weight.
BCS 7/9 → estimated ideal weight 20.8 kg — about 4.2 kg to lose, safely at 1–2% per week.
Dog age converter
Year one ≈ 15 human years, year two ≈ 9 more, then 4.5–7 per year depending on size.
Roughly 41 human years.
Food cost calculator
Turn a calorie target and a bag price into a real monthly food budget.
About 250 g/day ≈ 1.88 per day · 57.00 per month · a 12 kg bag lasts 48 days.