A little science for everyday life
Life is full of questions.
Let’s work them out.
From the DNA in a cell to the trees in your garden, find a clearer answer with free biology calculators and friendly explanations.
Explore all calculators →50 free tools10 categoriesZero ads
What are you exploring?
↗🔬Bio laboratory8 calculators · Dilutions, cell growth, DNA, and proteins.↗🧬Genetics6 calculators · Make sense of alleles and inheritance.↗🐣Animal pregnancy5 calculators · Plan ahead with gestation estimates.↗🐕Dogs4 calculators · Everyday tools for life with your dog.↗🐈Cats3 calculators · Understand your cat’s age and needs.↗🐢Other animals4 calculators · From small companions to horses.↗🐄Livestock4 calculators · Practical calculations for the farm.↗🌱Gardening & crops10 calculators · Grow with a little more confidence.↗🌳Trees & forestry4 calculators · Measure the trees around you.↗🧪Other biology2 calculators · A few more ways to explore life.
A good place to start
View all →The answer is only the beginning.
A number means more when you know where it came from. Every tool includes its method, an example you can try, and a plain-language explanation of the assumptions that matter.
We’re biology enthusiasts making useful tools for fellow curious minds. There are no subscriptions, no advertisements, and no account to create. Get to know BiologyCalc →