Baby Eye Color Calculator – Predict Your Baby’s Eye Color Probabilities

The Baby Eye Color Calculator is an online tool that predicts the probability of your baby’s eye color based on the genetic combination of both parents’ eye colors.

Eye color inheritance is influenced by complex genetic factors, primarily involving the OCA2 and HERC2 genes. While the traditional model assumes brown is dominant over green, and green is dominant over blue, modern science shows that eye color prediction is probabilistic, not absolute.

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What Is the Baby Eye Color Calculator?

The calculator estimates the likelihood of your child having brown, green, or blue eyes. It works on a simplified Mendelian inheritance model, using statistical averages from genetic research.

It’s important to note that this is an estimate, not a guarantee, as multiple genes and environmental factors can influence the final outcome.

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How to Use the Calculator

Follow these steps to predict your baby’s eye color probabilities:

Step 1: Select Parent 1’s Eye Color

From the dropdown menu, choose Brown, Green, or Blue for the first parent.

Step 2: Select Parent 2’s Eye Color

Select the eye color for the second parent from the same list.

Step 3: Click “Calculate Probability”

The tool will instantly display the probability of your child having:

• Brown eyes (%)
• Green eyes (%)
• Blue eyes (%)

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Example Calculation

If Parent 1 has Brown eyes and Parent 2 has Blue eyes, the probability might be:

• Brown: 50%
• Green: 0%
• Blue: 50%

If both parents have Blue eyes:

• Brown: 0%
• Green: 0%
• Blue: 100%

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The Science Behind Eye Color Prediction

Eye color is primarily determined by melanin in the iris.

• Brown eyes → High melanin
• Green eyes → Moderate melanin
• Blue eyes → Low melanin

Inheritance works through dominant and recessive alleles:

• Brown is dominant over green and blue
• Green is dominant over blue
• Blue is recessive

However, real-life genetics are polygenic (multiple genes), so two blue-eyed parents can sometimes have a green-eyed child, although rare.

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Limitations of the Calculator

• This calculator uses a simplified model — actual genetics are more complex.
• Does not consider rare eye colors like gray, hazel, or amber.
• Results are probabilities, not certainties.

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FAQ – Baby Eye Color Calculator

Q1: Can two blue-eyed parents have a brown-eyed baby?
Extremely rare, but possible due to genetic variations or mutations.

Q2: Why does the calculator only include brown, green, and blue?
These are the three main categories for inheritance models. Hazel, amber, and gray result from variations in melanin and light scattering.

Q3: Is eye color fixed at birth?
Not always. Many babies are born with blue or gray eyes that darken in the first 6–12 months as melanin production increases.

Q4: Is this calculator accurate?
It’s a good estimate based on common genetic patterns, but real-world genetics may differ.

Q5: Does ethnicity affect the results?
Yes. Populations with higher melanin levels tend to have a higher likelihood of brown eyes.