Free Tools for Breeders
Free, anonymous, no-signup utilities that run in your browser. Use them for planning. Use BreederHQ for the actual records.
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Heat Cycle Calculator
- dogs
Enter the first day of heat to estimate proestrus, estrus, the rough breeding window, the estimated whelping window, and the approximate next-heat date.
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Progesterone Timing Tracker
- dogs
Log P4 test results in cycle order, see the trend across readings, and bring organized data to your reproductive vet. Educational planning tool. Not veterinary advice.
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Whelping Date Calculator
- dogs
- horses
- goats
- sheep
- cattle
Enter a breeding date (or progesterone-confirmed ovulation date for dogs) to estimate the due date, the normal due window, and species-specific prep and monitoring dates.
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Breeding Planner
- dogs
- horses
- goats
- sheep
- cattle
Project upcoming heat cycles, breeding windows, and the open time between them for up to three females across multiple species.
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Puppy Vaccination Schedule Generator
- dogs
Enter a litter’s birth date to generate a general puppy vaccination planning schedule from 6 to 16 weeks, with optional go-home handoff dates. Planning tool only. Confirm specific vaccines and protocol with your veterinarian.
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Puppy Deworming Schedule Generator
- dogs
Enter a litter’s birth date to generate a general puppy deworming planning schedule from 2 to 12 weeks, with optional go-home handoff dates. Planning tool only. Discuss products, doses, and protocol with your veterinarian.
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Puppy Weight Tracker
- dogs
Log a litter’s birth date and each weight reading in ounces, grams, or pounds. See daily gain, total gain, and a trend summary that flags flat or declining patterns. Visualization tool only. Not veterinary advice.
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Coefficient of Inbreeding (COI) Calculator
- dogs
- cats
- horses
- goats
- sheep
- cattle
- rabbits
- alpacas
- llamas
Enter sire, dam, and up to five generations of ancestors. The calculator finds common ancestors automatically and returns Wright’s coefficient of inbreeding as a percentage with per-ancestor contribution. Planning tool only. For live COI on every planned breeding, use BreederHQ.
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Puppy Application Builder
- dogs
Toggle the screening sections you want (household, experience, breed fit, lifestyle, housing, training, vet reference, placement, contract acknowledgement) and generate a ready-to-send puppy application template. Template builder only. No data collected.
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No tools yet for that species. .
Related Workflows
Heat Cycle Tracking
Log heats, track ovulation windows, plan breeding timing.
Breeding Plans
8-phase breeding plan lifecycle from goal to placement.
Waitlists and Placement
Applications, matching, deposits, automated notifications.
Genetics and Health Testing
OFA, PennHIP, Embark, COI calculation, multi-locus color.
Whelping and Offspring Care
Weight tracking, anomaly alerts, neonatal dashboard.
Litter Management Software
From whelp through weights, deworming, vaccinations, applications, deposits, contracts, and placement.
Dog Breeding Software
Run your entire dog breeding program in one connected system.