Free pet health calculators
Instant cat and dog tools for calories, body condition, and weight — no sign-up, no data collection, no paywall. Every formula is reviewed against WSAVA and AAHA clinical guidelines.
Building an AI agent? Use the same math via our open MCP server (GitHub).
Available now
Cat Calorie Calculator
Daily kcal target and portion in grams, using the WSAVA/AAHA RER formula.
Open the toolCat BMI Calculator
Estimate body fat percentage using chest circumference and hind limb measurements.
Open the toolDog Calorie Calculator
Daily kcal target and feeding plan for dogs by weight, neuter status, and activity.
Open the toolCat Body Condition Score
Visual 9-point BCS assessment — see if your cat is underweight, ideal, or obese.
Open the toolDog Body Condition Score
Visual 9-point BCS assessment tuned for dog anatomy and coat types.
Open the toolCat Ideal Weight Lookup
Healthy weight ranges for 28 cat breeds by sex, with obesity-prone callouts.
Open the toolDog Ideal Weight Lookup
Healthy weight ranges for 48 dog breeds by sex, with brachycephalic and obesity-prone callouts.
Open the toolCup to Grams Converter
Convert feeding cups to grams (or grams to cups) and match daily kcal to a weighed portion.
Open the toolPuppy Weight Calculator by Breed
Expected puppy weight at 2–9 months from adult ideal ranges for 48 breeds.
Open the toolBreed Calorie Charts by Weight
Pilot charts for Ragdoll, Maine Coon, Labrador, Golden Retriever, and French Bulldog — kcal by lb.
Open the toolBreed Grams Feeding Charts
How many grams to feed by breed and weight — sample dry and wet portions from RER/MER targets.
Open the toolLearn the signals
Signs of Overfeeding in Cats and Dogs
Catch weight creep early: ribs harder to feel, waist fading, uncounted treats, and double-feeding.
Read the guideFamily Feeding Coordination
Assign meal ownership, build a shared treat budget, and stop accidental second dinners.
Read the guideBreaking Weight-Loss Plateaus
Audit calories, portions, treats, and weekly trends before making another food cut.
Read the guideMy Cat Won't Lose Weight
Use a feline-specific checklist for hidden calories, multi-cat food theft, and when to ask your vet for a workup.
Read the guideMy Dog Is Gaining Weight on a Diet
Troubleshoot canine weight gain with calorie-density math, treat audits, neutering changes, and medical red flags.
Read the guideTreats and Weight Loss Math
Use the 10% rule, low-calorie swaps, and training-treat math without blowing the daily calorie budget.
Read the guideSenior Cat Losing Weight
Know the common disease patterns, basic tests, and emergency red flags when an older cat is dropping weight.
Read the guideCat Losing Weight But Eating
Understand hyperthyroidism, diabetes, and absorption issues when an older cat drops weight despite eating.
Read the guideCalculators are just the first step
The Paws & Pounds mobile app stores every weigh-in, auto-adjusts the calorie target as your pet approaches the goal, lets your household log meals together, and charts the trend so you can show your vet.