Free tools by Omelo
Pet Health Tools
Vet-approved calculators and planners for dog and cat parents. Free, instant, no sign-up required.
Feeding Calculator
How many calories does your dog or cat need? Get daily portions, meal frequency, and nutrient targets based on breed, weight, and activity level.
Calories, portions, kibble, diet plan
Age Calculator
How old is your pet in human years? Not the multiply-by-7 myth. Real veterinary science based on breed size.
Human years, life stage, aging
Pregnancy Calculator
Enter the mating date and get your pet's expected delivery date with a full week-by-week development timeline and warning signs.
Due date, timeline, delivery, whelping
Vaccination Schedule
Enter your pet's birth date and get the complete vaccination timeline with exact dates, core vs optional vaccines, and booster timing.
Vaccines, puppy shots, kitten shots, boosters
Chocolate Toxicity Calculator
Your dog ate chocolate? Enter the type, amount, and your dog's weight to estimate the theobromine dose and risk level. Guidance only, always call your vet or poison control for any ingestion.
Dog ate chocolate, theobromine, poisoning, emergency
Ideal Weight Calculator
Is your dog or cat overweight? Answer a few body-condition questions to get their score, estimated ideal weight, and how far off they are.
Overweight, body condition score, ideal weight, obese
Puppy Weight Predictor
How big will your puppy get? Enter age, current weight, and size class to estimate their adult weight range.
Puppy adult weight, how big will my puppy get, growth
Water Intake Calculator
How much water should your dog or cat drink a day? Enter their weight for the normal range and the red-flag threshold that means a vet check.
Water intake, drinking too much, thirst, dehydration
More tools coming soon. Pet cost calculator, breed comparison, and more.
Why we built these tools
In an analysis of 200,000+ pet health conversations on Omelo, diet and feeding portions were the #1 topic, followed by vomiting and pregnancy. Vaccination timing and deworming schedules were also among the top 20 concerns. These tools give you instant, vet-approved answers to the questions pet parents ask most often.
Every calculator uses established veterinary formulas and guidelines. The feeding calculator uses the Resting Energy Requirement (RER) formula recommended by veterinary nutritionists worldwide. The age calculator uses updated research from the American Veterinary Medical Association (AVMA). The vaccination schedule follows core vaccine protocols recognized by the AVMA and World Small Animal Veterinary Association (WSAVA).
These tools give you the starting point. Omelo gives you the ongoing tracking, personalized to your specific pet, that turns a one-time calculation into a continuous health picture. All clinical content is reviewed by our veterinarian, Dr. Ashim Sarkar, BVSc & AH.