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CalcForge

121 tools

Pet & Animal Tools

Dog age estimators, cat age converters, aquarium volume tools, and feeding guides.

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Dog Age Calculator — Human Years by Size

Estimate your dog age in human years using a life-stage model adjusted for dog size instead of the outdated times-seven myth.

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Cat Age Calculator — Human Years

Convert your cat age to human years using a life-stage curve that accounts for rapid aging in the first two years.

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Aquarium Volume Calculator — Gallons & Litres

Calculate fish tank volume in gallons and litres from dimensions. Rectangular and cylindrical aquarium shapes are supported.

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Dog Food Calorie Calculator

Estimate a dog daily calorie requirement from body weight and life stage, then compare it with food label calories.

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Dog Breed Weight Chart & Size Guide

Browse typical adult weight ranges for common dog breeds and compare breed sizes using published breed standards.

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Dog Age Calculator by Breed

Get a more precise dog-to-human age estimate by selecting a specific breed and its typical size category.

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Senior Dog Age Calculator

Estimate the human-equivalent age and life stage for an older dog using size-adjusted age ranges.

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Puppy Feeding Calculator — By Weight & Age

Estimate puppy calorie needs from current weight and age, then convert calories using the selected food label.

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Puppy Growth Calculator — Adult Weight Projection

Project your puppy adult weight from current age and size using growth curves for small, medium, large, and giant breeds.

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Dog Weight Calculator — Breed Range Check

Compare your dog current weight to typical breed ranges and see whether they are underweight, ideal, or overweight.

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Dog Water Intake Calculator

Estimate daily water needs for your dog based on body weight, activity level, and diet type using veterinary maintenance guidelines.

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Dog Pregnancy Calculator — Due Date

Calculate your dog estimated due date from mating date using the standard 63-day canine gestation period.

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Dog BMI Calculator

Estimate a canine body mass index from weight and height at the shoulder as a screening tool alongside body condition scoring.

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Dog Calories Calculator — Daily Energy Needs

Calculate daily calorie requirements for dogs by life stage using the RER formula and convert to food portions.

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Cat Food Calculator — Daily Portions

Estimate daily calorie needs and food portions for cats by life stage using the veterinary RER formula.

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Cat Weight Calculator — Healthy Range

Assess whether your cat is underweight, ideal, or overweight compared to typical healthy adult weight ranges.

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Cat Water Intake Calculator

Estimate how much water your cat should drink daily based on body weight and wet vs dry food diet.

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Fish Stocking Calculator — Tank Capacity

Check aquarium stocking levels using the inch-per-gallon rule and get conservative fish count recommendations.

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Aquarium Heater Size Calculator

Calculate the recommended aquarium heater wattage based on tank volume, room temperature, and target water temperature.

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Aquarium Filter Size Calculator

Size your aquarium filter by tank volume and bioload using recommended turnover rates of 4–6 times per hour.

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Aquarium Weight Calculator — Filled Tank

Estimate total filled aquarium weight including water, substrate, and equipment to verify stand and floor capacity.

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Horse Weight Calculator — Tape Formula

Estimate horse body weight from heart girth and body length using the Carroll and Huntington formula.

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Horse Feed Calculator — Hay Requirements

Calculate daily hay requirements for horses based on body weight and workload using percentage-of-body-weight guidelines.

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Bird Cage Size Calculator

Calculate minimum bird cage dimensions from wingspan and species size for flighted and clipped birds.

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Rabbit Hutch Size Calculator

Calculate minimum rabbit hutch floor area and run length based on rabbit count, weight, and indoor vs outdoor housing.

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Snake Feeding Calculator — Prey Size

Evaluate snake prey item size as a percentage of body weight and get feeding frequency recommendations.

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Turtle Tank Size Calculator

Calculate minimum turtle tank volume using the gallons-per-inch shell length guideline for aquatic and semi-aquatic species.

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Pet Ownership Cost Calculator

Estimate monthly and annual pet ownership costs including food, vet care, insurance, and grooming by species and size.

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Cat Pregnancy Calculator — Due Date

Calculate your cat estimated due date from mating date using the standard 65-day feline gestation period.

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Horse Pregnancy Calculator — Foaling Date

Estimate horse foaling date from breeding date with a 340-day average gestation and normal foaling window.

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Rabbit Pregnancy Calculator — Kindling Date

Calculate rabbit kindling date from mating using the typical 31-day gestation period.

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Bird Egg Incubation Calculator

Calculate hatch dates and incubation parameters for chicken, duck, turkey, quail, parrot, and pigeon eggs.

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Litter Size Estimator

Estimate expected litter size for dogs, cats, rabbits, and pigs based on breed size, mother age, and litter number.

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Puppy Due Date Calculator

Calculate puppy whelping due date from mating date using the standard 63-day canine gestation period.

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Kitten Due Date Calculator

Calculate kitten birth due date from mating date using the standard 65-day feline gestation period.

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Heat Cycle Calculator

Predict next heat or estrus cycle and fertile window for dogs, cats, horses, and rabbits.

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Breeding Age Calculator

Check minimum and recommended breeding age for dogs, cats, horses, rabbits, and birds by sex.

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Dog Ownership Cost Calculator

Estimate monthly and annual dog ownership costs including food, vet care, insurance, and grooming.

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Cat Ownership Cost Calculator

Estimate monthly and annual cat ownership costs including food, litter, vet care, and insurance.

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Horse Ownership Cost Calculator

Estimate monthly horse ownership costs including feed, farrier, vet care, insurance, and optional boarding.

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Aquarium Cost Calculator

Estimate aquarium setup costs and ongoing monthly expenses for freshwater and saltwater tanks.

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Puppy First-Year Cost Calculator

Calculate total first-year puppy costs including supplies, vet visits, training, and recurring care.

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Kitten First-Year Cost Calculator

Calculate total first-year kitten costs including supplies, vet visits, and recurring care.

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Pet Insurance Calculator

Estimate monthly pet insurance premiums for dogs, cats, and horses by age, size, and coverage level.

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Vet Bill Estimator

Estimate veterinary costs for wellness visits, sick exams, emergencies, and surgery by species and size.

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Pet Boarding Cost Calculator

Calculate dog and cat boarding costs by number of days, pet size, and standard vs luxury boarding.

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Pet Grooming Cost Calculator

Estimate annual and per-visit grooming costs for dogs and cats by coat type and visit frequency.

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Pet Food Cost Calculator

Estimate monthly pet food costs for dogs, cats, horses, birds, and rabbits by size and food quality.

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Aquarium Electricity Cost Calculator

Calculate monthly aquarium electricity costs from heater, filter, and lighting wattage and local kWh rates.

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Horse Stable Cost Calculator

Estimate monthly horse boarding and stable costs for pasture, stall, and full-care boarding options.

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Exotic Pet Cost Calculator

Estimate setup and monthly costs for reptiles, birds, ferrets, and hedgehogs.

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Multi-Pet Monthly Budget Calculator

Calculate total monthly pet budget for households with multiple dogs, cats, and other pets.

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Aquarium Glass Thickness Calculator

Calculate minimum aquarium glass thickness from tank dimensions and water depth for safe construction.

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Aquarium Lighting Calculator

Size LED aquarium lighting by tank volume and planted or reef requirements with PAR and wattage estimates.

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Aquarium Cycling Timeline Calculator

Estimate nitrogen cycle completion timeline for new aquariums with seeded media and fishless cycling options.

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Aquarium Water Change Calculator

Calculate water change volume needed to reduce nitrate levels to a target concentration.

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Aquarium Salt Calculator

Calculate marine salt needed to reach target salinity in gallons or litres of aquarium water.

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Aquarium CO₂ Calculator

Estimate CO₂ injection bubble rate for planted aquariums based on tank size and target ppm.

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Aquarium Fertilizer Calculator

Calculate weekly and daily liquid fertilizer doses for low-tech and EI dosing regimes.

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Pond Volume Calculator

Calculate garden pond volume in litres and gallons for rectangular or circular pond shapes.

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Pond Pump Size Calculator

Size pond pump flow rate for filtration, waterfalls, or fountains based on volume and head height.

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Pond Liner Calculator

Calculate pond liner dimensions and area including depth overlap for garden pond installation.

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Fish Compatibility Checker

Check freshwater and marine fish compatibility by species temperament, water type, and tank size.

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Horse Age Calculator

Calculate horse age and life stage from birth year for foals, adults, and senior horses.

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Horse Age to Human Years Calculator

Convert horse age to approximate human-equivalent years using a life-stage comparison model.

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Hay Requirement Calculator

Calculate daily hay requirements for horses by body weight and workload intensity.

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Horse Water Intake Calculator

Estimate daily water consumption for horses by weight, workload, and hot weather conditions.

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Horse Body Condition Score Calculator

Estimate horse body condition score from rib, wither, and tailhead fat coverage observations.

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Horse Blanket Size Calculator

Determine horse blanket size from heart girth and body length measurements.

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Horse Medication Dosage Calculator

Calculate medication volume from horse weight, mg/kg dose, and drug concentration. Educational use only.

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Horse Stall Size Calculator

Calculate minimum horse stall dimensions for standard, large, and foaling stalls by horse height.

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Horse Trailer Size Calculator

Recommend horse trailer length and width for multiple horses and slant-load configurations.

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Bird Age Calculator

Determine pet bird life stage and percent of expected lifespan by species and age.

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Bird Food Calculator

Calculate daily bird food portions in grams from species, weight, and activity level.

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Bird Water Calculator

Estimate daily drinking water needs for pet birds based on body weight.

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Bird Weight Tracker

Compare current bird weight to ideal weight and track underweight or overweight status.

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Bird BMI Calculator

Estimate bird body mass index from weight and body length as a screening tool.

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Bird Flight Cage Calculator

Calculate minimum flight cage dimensions for flighted birds by wingspan and bird count.

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Bird Life Expectancy Calculator

Estimate expected lifespan range for common pet bird species in captivity.

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Bird Name Generator

Generate creative pet bird names by species and personality type.

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Rabbit Age Calculator

Calculate rabbit age, life stage, and human-equivalent years from age in months.

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Rabbit Food Calculator

Calculate daily rabbit pellet and vegetable portions by weight and age.

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Rabbit Water Intake Calculator

Estimate daily water needs for rabbits based on weight and fresh vegetable diet.

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Rabbit Weight Calculator

Assess whether your rabbit is underweight, ideal, or overweight compared to healthy ranges.

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Rabbit Hay Calculator

Calculate daily hay requirements for rabbits by weight and hay type timothy or alfalfa.

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Rabbit Name Generator

Generate fun pet rabbit name ideas instantly.

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Bearded Dragon Age Calculator

Estimate bearded dragon age and life stage from length and weight measurements.

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Snake Enclosure Calculator

Calculate minimum snake enclosure dimensions from snake length for terrestrial and arboreal species.

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Gecko Tank Size Calculator

Calculate minimum tank size for leopard, crested, and tokay geckos by life stage.

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Turtle Water Calculator

Calculate aquatic turtle water volume, depth, and temperature guidelines by shell length.

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Reptile UVB Lighting Calculator

Recommend UVB bulb type, strength, and replacement schedule for desert, tropical, and forest reptiles.

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Reptile Heat Lamp Calculator

Size heat lamp wattage for reptile enclosures based on volume, room temp, and basking target.

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Reptile Incubation Calculator

Calculate reptile egg hatch dates, temperature, and humidity for common captive-bred species.

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Reptile Humidity Calculator

Calculate misting volume and frequency to reach target humidity in terrariums by substrate type.

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Terrarium Volume Calculator

Calculate terrarium internal volume in litres and gallons from length, width, and height.

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Reptile Life Expectancy Calculator

Estimate captive lifespan range for common pet reptile species with care tips.

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Hamster Cage Size Calculator

Calculate minimum hamster cage floor area for Syrian and dwarf hamsters.

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Hamster Food Calculator

Calculate daily hamster food portions by species and body weight.

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Hamster Wheel Size Calculator

Calculate minimum hamster wheel diameter to prevent back arching for Syrian and dwarf hamsters.

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Guinea Pig Food Calculator

Calculate daily guinea pig pellets, vegetables, and vitamin C requirements.

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Guinea Pig Cage Size Calculator

Calculate minimum guinea pig cage floor area for pairs and groups.

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Guinea Pig Hay Calculator

Calculate daily hay requirements for guinea pigs by body weight.

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Ferret Food Calculator

Calculate daily calorie and food gram requirements for ferrets by weight and activity.

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Ferret Cage Calculator

Calculate minimum ferret cage volume and levels for one or more ferrets.

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Mouse & Rat Cage Size Calculator

Calculate minimum cage floor area for pet mice and rats by group size.

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Mouse & Rat Food Calculator

Calculate daily food portions for pet mice and rats by body weight.

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Cow Weight Calculator

Estimate cattle body weight from heart girth and body length using the standard tape formula.

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Cow Feed Calculator

Calculate daily hay and dry matter feed requirements for cattle by weight and production stage.

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Cow Water Calculator

Estimate daily water consumption for cattle by weight, lactation, and hot weather.

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Goat Feed Calculator

Calculate daily hay and grain requirements for goats by weight and lactation status.

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Goat Weight Calculator

Estimate goat body weight from heart girth and body length measurements.

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Sheep Feed Calculator

Calculate daily hay and supplemental grain for sheep by weight and pregnancy status.

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Sheep Weight Calculator

Estimate sheep body weight from heart girth measurement.

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Chicken Coop Size Calculator

Calculate minimum coop and run space, plus nesting boxes, for backyard chickens.

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Chicken Feed Calculator

Calculate daily chicken feed requirements by flock size and age chicks, layers, or broilers.

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Egg Production Calculator

Estimate weekly and monthly egg production by hen count and breed productivity level.

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Pig Feed Calculator

Calculate daily pig feed by body weight and growth stage grower, finisher, or breeding.

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Pig Weight Calculator

Estimate pig body weight from heart girth and body length using standard livestock formula.

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Duck Pond Size Calculator

Calculate minimum duck pond surface area, depth, and volume for backyard duck flocks.

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Turkey Feed Calculator

Calculate daily turkey feed requirements by flock size and age poult, young, or adult.

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Livestock Stocking Density Calculator

Calculate maximum animal units per acre for cattle, sheep, goats, or mixed pastures by rainfall.

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