Look after your pets with quick, factual math. Estimate a dog age by breed size, work out calorie needs and food portions for dogs and cats, check chocolate toxicity risk, track a pregnancy, and size an aquarium. Informational tools, free and in your browser. All 20 tools below are free, run in your browser, and need no sign-up.
Free dog age calculator by breed size. Convert dog years to human years with a size adjusted model instead of the naive times seven rule.
Free puppy adult weight predictor. Estimate how big your puppy will grow from its current age and weight using a simple growth ratio method.
Free dog calorie calculator. Work out daily calories for your dog from resting energy needs and an activity factor using the standard RER and MER method.
Free cat calorie calculator. Estimate daily calories for your cat from resting energy needs and a life stage factor using the RER and MER method.
Free dog food portion calculator. Turn your dog daily calorie needs and the food calories per cup into a daily cup and gram feeding amount.
Free cat food portion calculator. Convert your cat daily calorie needs and the food calories per can or cup into a clear daily feeding amount.
Free dog water intake calculator. Estimate how much water your dog should drink per day from its body weight using a common ml per kg guideline.
Free dog chocolate toxicity calculator. Estimate the theobromine dose from the chocolate type and amount your dog ate against common risk thresholds.
Free dog pregnancy calculator. Estimate your dog whelping due date and week by week timeline from the breeding date using a 63 day gestation.
Free cat pregnancy calculator. Estimate your cat queening due date and key milestones from the mating date using a 65 day feline gestation.
Free aquarium volume calculator. Find the water volume of a rectangular fish tank in litres and gallons from its length, width, and height.
Free fish tank stocking calculator. Estimate how many fish a tank can hold with the classic inch per gallon guide and a safer adjusted figure.
Free horse age calculator. Convert your horse age into human years with a staged model that reflects fast early growth and slower later aging.
Free rabbit age calculator. Convert your rabbit age into human years with a staged model that reflects fast maturing youth and a long adult phase.
Free dog crate size calculator. Get recommended crate length and height from your dog body measurements so it can stand, turn, and lie down.
Free cat litter usage calculator. Estimate how much litter you use per month and the yearly cost from your number of cats and change routine.
Free dog walking calculator. Estimate a daily walk distance and time target for your dog based on its energy level, age band, and body weight.
Free pet sitting cost calculator. Estimate the total price of pet sitting or boarding from the daily rate, number of days, pets, and extra visits.
Free dog body condition score tool. Answer quick rib, waist, and belly questions to estimate a 1 to 9 body condition score and weight status.
Free pet medication schedule planner. Turn a start time and dosing interval into a clear list of dose times across the next day or two.
Yes. Every tool in this toolkit is completely free, with no sign-up and no usage limits.
Yes. They run in any modern web browser on phone, tablet or desktop, with nothing to install.
Yes. These tools run entirely in your browser, so nothing you enter is uploaded to a server.