Toolnoza

Pet Tools

Estimate dog and cat resting energy needs, compare age estimates, plan pet food budgets and calculate aquarium volume.

Dog Age CalculatorEstimate a medium-sized dog’s age in human years with a transparent age conversion. Enter years and months.Cat Age CalculatorConvert cat years to a human-age analogy using a feline age chart, including kitten ages.Pet Food Cost CalculatorCalculate daily, monthly and yearly pet food costs and how long a bag lasts from your own feeding amount.Aquarium Volume CalculatorCalculate rectangular aquarium capacity in liters and US gallons from internal dimensions and actual water depth.Dog Calorie CalculatorEstimate a dog's resting energy requirement (RER) from body weight using a standard veterinary formula.Cat Calorie CalculatorEstimate a cat's resting energy requirement (RER) from body weight using a standard veterinary formula.Dog Water Intake CalculatorEstimate a broad daily total-water range by body weight for a healthy dog.Cat Water Intake CalculatorEstimate a broad daily total-water range by body weight for a healthy cat.Dog Food CalculatorEstimate daily dog food portions from a daily calorie target and the food’s calories per cup.Cat Food CalculatorEstimate daily cat food portions from a daily calorie target and the food’s calories per cup.

Practical guides: Pet Tools

Dog Years to Human Years: Formula, Examples and LimitsCalculate a medium-sized dog’s human-age equivalent. Understand the 15–9–5 guideline, months and why multiplying by seven misses early development.Cat Years to Human Years: Age Chart and Calculation GuideConvert cat age to a human-age analogy, including kitten months. See a worked example, chart points and the limits of interpolation.How to Calculate Pet Food Cost per Day, Month and YearCalculate dog or cat food cost from bag weight, price and daily ration. Compare unit prices, bag duration and a 30-day feeding budget.How to Calculate Aquarium Volume in Liters and US GallonsCalculate rectangular aquarium capacity from internal dimensions. Account for water depth, substrate displacement and cm-to-inch conversion.Dog Calorie Calculator: Estimate Daily RER by WeightEstimate a dog’s resting energy requirement (RER) in kcal per day, see the formula and understand why RER is not a feeding prescription.Cat Calorie Calculator: Estimate Daily RER by WeightEstimate a cat’s resting energy requirement (RER) in kcal per day, with a worked example and clear limits on using calorie figures for feeding.How Much Water Should a Dog Drink? Daily Estimate by WeightEstimate a dog’s broad daily water requirement by weight and learn why diet moisture, weather and health change the amount it drinks from a bowl.How Much Water Should a Cat Drink? Daily Estimate by WeightEstimate a cat’s broad daily total-water range by weight and learn how wet food, environment and health affect drinking from the bowl.Dog Food Calculator: Convert a Calorie Target to Cups per DayTurn a veterinarian-approved daily calorie target into cups per day and per meal using the food’s kcal per cup.Cat Food Calculator: Convert a Calorie Target to Cups per DayEstimate cat food portions from a daily calorie target, food kcal per cup and number of meals, with clear assumptions and label checks.