Free Breeder Tools
Practical tools for real-world breeders
Designed for tracking, planning, and record-keeping — open instantly with no signup, no subscription, and no data leaving your device.
Animal Weight Tracker
Record and review animal weight data with exact timestamps, notes, and clear visual trends — designed for breeders who need accuracy, not guesswork.
- Multiple animals and groups
- Exact date & time entries
- Safe edits and corrections
- Local-only storage (no accounts)
All Tools
Dog Whelping Date Calculator
Estimate your dog's expected due date using the standard 63-day gestation average with realistic early and late delivery windows.
Gestation Calculator
Calculate gestation or incubation timelines for dogs, cats, small animals, livestock, and poultry.
Breeding Window Calculator
Interpret your dog's progesterone reading with machine-specific thresholds. Get exact breeding day recommendations for natural mating, fresh-chilled AI, or frozen semen.
Heat Cycle Tracker
Estimate your dog's next heat cycle using realistic planning ranges to support responsible breeding decisions.
Puppy Age Calculator
Calculate your puppy's exact age in days, weeks, and months — plus their current development stage and upcoming milestones.
Adult Size Predictor
Predict your puppy's adult weight using breed-specific growth curves. Get a full projected timeline and practical size guidance.
Puppy Buyer's Checklist
A complete, personalised care guide for new puppy owners — from pickup day through the first year. Share with your buyers.
Puppy Vaccination & Deworming Schedule
Generate exact care dates from your litter's birth date. Covers deworming, core vaccines, and parasite prevention with real-world breeder consensus ratings.
Dog Life Expectancy Calculator
Estimate lifespan using breed-specific data from a 2024 study of 584,734 dogs. Adjusted for sex, body condition, and lifestyle factors.
Chocolate Toxicity Calculator
My dog ate chocolate — is it dangerous? Enter weight, chocolate type, and amount for an instant risk assessment based on veterinary toxicology thresholds.
Puppy Sale Contract Generator
Generate a complete, printable puppy sale contract with your terms. Covers health guarantees, return policy, registration, and spay/neuter clauses.
Looking for guidance first?
Understanding what's considered normal before using calculators or trackers helps you plan with confidence. Explore breed-specific guides and evidence-based articles.
Explore breeding education →