Public tools
They work without an account. After signup you can save results in your herd — matings, EMS, weights and litters.
Pregnancy calculator
Due date from mating (~65 days, window 58–68).
COI / inbreeding calculator
Wright’s coefficient of inbreeding for a planned litter.
EMS code builder
Build or paste an EMS code with a simple segment legend.
Coat genetics (v1)
Simplified A, B and D locus cross — educational model.
Litter stage schedule
Weights, weaning and release readiness (~98 days) from birth date.
FIFe §3.3 litter spacing
Soft limits: max 2 litters / 12 months and max 3 / 24 for one queen.