Horse Coat Color Calculator
Predict the possible coat colors of a foal based on the coat colors and genetic extensions of the sire and dam. This calculator uses basic equine color genetics (Extension, Agouti, and Cream genes) to estimate probabilities.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator predicts possible coat colors for a foal based on the genetics of both parents. It uses three key genes: Extension (E/e), Agouti (A/a), and Cream (Cr).
- Select Sire (Father) and Dam (Mother) coat colors from the dropdown menus. These are for reference only; the actual genetics are set below.
- Choose the Extension (E/e) gene for each parent:
- EE or Ee = allows black pigment
- ee = red pigment only (chestnut base)
- Choose the Agouti (A/a) gene for each parent:
- AA or Aa = restricts black to points (bay base)
- aa = solid black (no restriction)
- Choose the Cream (Cr) gene for each parent:
- nn = no cream
- nCr = single cream (dilutes base color)
- CrCr = double cream (creates cremello/perlino/smoky cream)
- Click "Calculate Foal Colors" to see results.
Output: The calculator shows the most likely color and a full probability breakdown for all possible foal colors. An explanation of the genetics is provided below the results.
Note: This calculator assumes no other modifying genes (e.g., dun, roan, gray). All inputs are required for accurate results.
Previous Results
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Frequently Asked Questions
It considers the Extension (E/e), Agouti (A/a), and Cream (Cr) genes, which determine base coat color and dilution.
The predictions are based on simple Mendelian inheritance and assume no other modifying genes. Actual results may vary due to other genetic factors.
You can select the coat color and use typical genotypes for that color as a guide. For more accuracy, genetic testing is recommended.