Dog Calculators
Free dog calculators. Instant results, no login required.
21 tools availableBravecto Dosage Calculator for Dogs
Find the correct Bravecto weight band and treatment schedule for your dog. Enter your dog's weight to identify the right product size and next treatment date.
Cephalexin for Dogs Dosage Calculator
Calculate the correct cephalexin dose for your dog by body weight. Enter weight, dose rate (mg/kg), and tablet strength to get the exact mg per dose and number of tablets.
Cost of Owning a Dog Calculator
Estimate the annual and lifetime cost of owning a dog in the UK. Covers food, insurance, veterinary care, grooming, and setup costs by breed size and life stage.
Dog Age Calculator
Convert your dog's age to human years using the AVMA size-adjusted formula and the UC San Diego 2019 epigenetic clock. Accounts for Small, Medium, Large, and Giant breeds.
Dog BMI Calculator
Calculate your dog's BMI using weight and height at withers. Get an instant weight category, ideal weight range, and vet guidance for Underweight, Healthy, Overweight, or Obese results.
Dog Breeding Cost Calculator
Calculate the full cost of breeding a dog litter — stud fee, health testing, whelping supplies, emergency vet reserve, and per-puppy costs. See cost per puppy, break-even price, and profit or loss.
Dog Chocolate Toxicity Calculator
Calculate the risk to your dog after eating chocolate. Enter dog weight, chocolate type, and amount to get an instant theobromine dose and risk level — Low, Mild, Moderate, or Severe — with a clear action recommendation.
Dog Dosage Calculator
Convert your vet's prescribed mg/kg dose into the correct volume of liquid medication (ml) or tablet count for your dog's weight. Supports liquid and tablet forms with reference doses for common OTC medications.
Dog Food Calculator
Calculate exactly how much to feed your dog each day. Uses the veterinary RER formula with life-stage, neuter status, and activity multipliers to give a daily calorie target and gram portion for your specific food.
Dog Harness Size Calculator
Find the correct harness size for your dog by entering chest girth, neck circumference, and back length. Returns a recommended size (XS to XXL) with fit guidance for Y-harness, step-in, and vest-style harnesses.
Dog Heat Cycle Calculator
Estimate your dog's next season (heat cycle) based on her last heat date and average cycle length. Returns the projected next season window and estimated fertile period.
Dog Life Expectancy Calculator
Estimate your dog's life expectancy based on their size, breed type, neutering status, and body condition. Returns a personalised lifespan estimate with range and current life stage.
Dog Onion Toxicity Calculator
Calculate the toxicity risk when your dog has eaten onion, garlic, leek, or other Allium foods. Enter your dog's weight and the quantity consumed for an instant risk assessment.
Dog Quality of Life Calculator
Assess your dog's quality of life using the HHHHHMM framework (Hurt, Hunger, Hydration, Hygiene, Happiness, Mobility, More good days). Helps guide end-of-life decisions in consultation with your vet.
Dog Raisin Toxicity Calculator
Calculate the toxicity risk when your dog has eaten grapes, raisins, sultanas, or currants. Enter body weight and quantity consumed for an instant risk assessment with action guidance.
Dog Size Calculator
Estimate your puppy's adult size and weight based on their current weight, age, and breed size category. Returns an adult weight range, size band, and expected growth completion age.
Dog Water Intake Calculator
Calculate your dog's daily water requirement based on weight, diet type, activity level, life stage, and environmental temperature. Returns a personalised daily drinking water target in ml and cups.
Dog Weight Gain Calculator
Calculate how much to feed an underweight dog to reach their target weight at a safe weekly gain rate. Returns daily caloric target, estimated time to goal, and food portion increase.
Omega-3 for Dogs Calculator
Calculate the daily EPA and DHA dose for your dog based on body weight and supplementation goal. Returns target milligrams and serving count for your specific fish oil or omega-3 product.
Raw Dog Food Calculator
Calculate how much raw food to feed your dog daily based on their ideal body weight, life stage, activity level, and feeding goal. Returns daily amount with BARF model component breakdown.
Tramadol for Dogs Calculator
Calculate the correct tramadol dose for your dog by body weight. Enter weight and prescribed mg/kg rate for the exact dose in mg and number of 50 mg tablets per administration.