Dog calculators for owners and vet pros.
Dog Biz Coach is a free dog calculator hub covering nutrition, health, medication, cost, age, breed, and care. Every tool is instant, ad-light, and grounded in modern vet references.
Practical dog maths, without the guesswork.
Every calculator on Dog Biz Coach solves a real question a dog owner or vet nurse types into Google every day. How many grams of food, how many millilitres of water, how dangerous is that chocolate wrapper on the floor. We built the tools you would want at eleven o'clock at night, when the vet line is closed and you need an answer that is both fast and trustworthy. Nothing is behind a signup, nothing is a teaser for a paid plan, and every result explains how it was calculated.
Results as you type, no waiting page.
Formulas from modern veterinary references.
No pop-ups, no wall of banners.
Nutrition calculators
Health calculators
Age & Life calculators
Cost calculators
How the numbers are made
Nutrition calculators use the Resting Energy Requirement formula (RER = 70 times body weight in kg to the power of 0.75) and multiply by a life-stage factor to reach the daily Maintenance Energy Requirement (MER). Portion sizes are then derived from the calorie density of the food you enter.
The chocolate toxicity tool uses published theobromine and caffeine thresholds per kilogram of body weight to classify a risk band, and always recommends calling your vet or a pet poison line for anything above a mild band.
Age, gestation, and puppy weight tools use standard veterinary growth curves and the AKC and AVMA reference tables. Cost tools are built from published average pricing in the UK, US, and EU and are updated each year.
None of these tools replace a veterinary visit. If your dog is unwell, in pain, or has eaten something toxic, call your vet or an emergency animal hospital first, and use the calculator only to prepare the information they will ask for.