05 tools · 5 live
Biology Calculators
Genetics, ecology, population, and life-science calculators.
Biology is the smallest category on the site — five tools covering genetics (Punnett square), pet age conversion, and pregnancy timing for cats and dogs. It's narrow by design rather than an oversight: these are the biology-adjacent calculators that come up often enough to be worth building, without trying to cover the breadth of a full biology curriculum.
The Punnett square calculator is the odd one out — genuinely useful for a genetics class, not just a pet-related lookup — while the rest are aimed at pet owners working out an age in human-years or an expected due date.
Pet Age
LiveConvert your dog or cat's age to human years using veterinary guidelines based on species, size, and non-linear aging rates.
Blood Type
LivePredict a child's possible blood types and Rh factor using both parents' blood groups and Mendelian genetics.
Punnett Square
LiveGenerate a 2x2 Punnett Square for a monohybrid cross with genotype and phenotype probabilities.
Dog Pregnancy
LiveCalculate a pregnant dog's estimated whelping (due) date and track her week-by-week gestation with developmental milestones and owner care tips.
Cat Pregnancy
LiveCalculate your cat's estimated due date and week-by-week gestation timeline with kitten milestones and owner care tips.