Free Pet & Animal
Calculators Hub
Free, accurate tools for every pet and farm animal — age converters, pregnancy trackers, and nutrition calculators. All in one place, instant results, no sign-up.
Pick Your Pet Calculator
Covering dogs, cats, horses, and farm animals — all tools are free, instant, and built for pet owners & farmers alike.
Dog Age Calculator
Convert your dog’s age to human years using the science-based DNA methylation formula — far more accurate than the old “×7” myth. Know exactly where your dog is in their life journey.
Open Calculator 🐈 Cat AgeCat Age Calculator
Find your cat’s equivalent human age and understand their life stage — from energetic kitten to wise senior feline. Helps you tailor diet, vet visits, and activity levels.
Open Calculator 🐱 Cat PregnancyCat Pregnancy Calculator
Estimate your cat’s due date and track key milestones across her 63–67 day gestation. Plan for a safe, healthy delivery — from nesting prep to knowing when to call the vet.
Open Calculator 🐴 Horse AgeHorse Age Calculator
Convert your horse’s age to the human equivalent and identify their physical stage — young, prime, mature, or senior. Essential for tailoring exercise, diet, and healthcare.
Open Calculator 🐎 Horse PregnancyHorse Pregnancy Calculator
Track your mare’s ~340-day gestation. Get the estimated foaling date plus trimester milestones so you can prepare feed changes, stable bedding, and vet checks in time.
Open Calculator 🐄 Cow AgeCow Age Calculator
Convert your cow’s age to the human equivalent and understand where they sit in their productive life cycle — from calf through peak production years to retirement.
Open Calculator 🐮 Cow PregnancyCow Pregnancy Calculator
Find your cow’s expected calving date from the breeding date. Track the 283-day bovine gestation with trimester breakpoints to plan dry-off, vaccinations, and calving prep.
Open Calculator 🌾 Cow NutritionCow Food Calculator
Calculate daily feed requirements for your cattle based on body weight, age, and production stage. Perfect for dairy cows, beef cattle, and breeding stock to optimise herd health.
Open CalculatorAnimal Life — Key Numbers to Know
Quick facts every pet owner and farmer should have at their fingertips.
Gestation Period
Gestation Period
Gestation Period
Lifespan
Lifespan
Maximum Lifespan
Get Your Result in 3 Simple Steps
No account. No downloads. Works instantly on any phone or desktop.
Choose a Calculator
Pick the tool that matches your animal — dog, cat, horse, or cow — and the question you need answered: age, pregnancy dates, or nutrition.
Enter Animal Details
Fill in birthdate, breeding date, body weight, or other details — every field is clearly labelled. No guesswork required.
Get Instant Results
Results appear immediately with no page reload. Bookmark the calculator or share the result with your vet or farm team in seconds.
Common Questions
Yes — 100% free, forever. No account, no email, and no payment required. Every calculator runs entirely in your browser on any device, with no data stored or transmitted. They are designed to work even on slow mobile connections.
Our Dog Age Calculator uses the updated scientific model based on DNA methylation research (Trey Ideker, UC San Diego, 2020) — not the outdated “multiply by 7” rule. Cat, horse, and cow converters use widely accepted veterinary life-stage charts. For health assessments, always consult a licensed vet.
A cat’s pregnancy typically lasts 63–67 days from mating, with 65 days being the average. The Cat Pregnancy Calculator estimates the due date and highlights key trimester milestones — including the best time to prepare a nesting box and schedule a pre-birth vet check.
Mares carry their foals for approximately 340 days (around 11 months), though normal range is 320–370 days. Use the Horse Pregnancy Calculator to estimate the foaling date and plan stable care, feeding changes, and vet visits for each stage of gestation.
The Cow Food Calculator estimates daily dry matter intake (DMI) and nutritional requirements based on body weight, age, production stage (lactating, dry, or growing), and purpose (dairy or beef). It helps farmers plan feed budgets and ensure adequate nutrition for the whole herd.
Yes! More tools are in development, including a Dog Food Calculator, Cat Calorie Calculator, Rabbit Age Calculator, and a Dog Pregnancy Calculator. Bookmark this hub page — new calculators are added regularly and will appear in the grid above automatically.
People more commonly search for “pet calculator” (covering dogs and cats) while farmers use terms like “cow pregnancy calculator” or “horse gestation” directly. This hub covers both — it is the one-stop page for any animal calculation need, whether you are a pet owner or a livestock farmer.
All Pet & Animal Calculators — Free & Instant
Jump straight into any tool. No account needed, no data stored. Built for pet owners and farmers at Sitnit.com.