Free Tools for Lab Animal Research & Breeding
A growing collection of free, no-signup calculators for geneticists, colony managers, and breeders. Every tool runs in your browser, has a shareable link, and works for mouse, rat, and other species.
Genetics
Breeding Genetics Calculator
Predict offspring genotype & phenotype ratios with Punnett squares for mouse, fly, fish, rat & worm crosses.
Open tool →Punnett Square Calculator
Type any two parent genotypes (e.g. AaBb × Aa) and instantly see the full Punnett square and offspring ratios.
Open tool →Mouse Coat Color Calculator
Cross two mice by their A/B/C/D/P loci and see the expected coat colors of the litter, with epistasis handled for you.
Open tool →Mendelian Ratio Calculator
Expected WT / het / homozygous ratios for knockout & transgenic crosses — sanity-check your genotyping counts.
Open tool →Breeding & Colony
Gestation & Due Date Calculator
Enter a plug/mating date and get the expected birth window, weaning date and separation date for mouse, rat & more.
Open tool →Colony Growth & Cage Planner
Project how many animals and cages your colony will need over 6–12 months from your breeding pairs and litter rate.
Open tool →Budget & Stats
Why we built these tools
Researchers and breeders run the same calculations over and over — predicting a cross, counting back to a due date, estimating how many cages a colony will need, or justifying animal numbers for a grant or IACUC protocol. These free tools do the arithmetic instantly so you can focus on the science.
They're made by Moustra, the AI-powered mouse colony management platform. When you're ready to stop tracking your colony in spreadsheets, Moustra turns these one-off calculations into a living record of your breeding pairs, litters, genotypes, and costs.
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Researchers at top institutions use Moustra to streamline their mouse colony management. Start free today and experience the difference.
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