Child Height Predictor
Predict a child's adult height from the parents' heights.
Enter your values to see the result.
Processing and privacy
Processing varies by tool. Check the instructions for local processing, server requests, external services and any file or request limits before entering sensitive information.
Read the privacy policyHow this calculation works
Understand the method, inputs and limits behind your result.
- Formula
- Predicted adult height(cm) = (mother height + father height + 13 for boys, or −13 for girls) / 2.
- Variables
- Units: Metric, Imperial
- Child: Boy, Girl
- Mother's height
- Mother's height (ft)
- Inches
- Father's height
- Father's height (ft)
- Inches
- Units
- Mother's height: cm
- Father's height: cm
- Example
- A mother of 163 cm and a father of 177 cm predict about 176.5 cm for a son and 163.5 cm for a daughter.
- Assumptions
- The result follows the selected options and supplied inputs. Displayed values may be rounded; check input precision before using the result.
- Source
- ToolzHive calculation guide and calculator implementation. External reference verification is pending.
- Last reviewed
- Review date not yet recorded.
Methodology & References
The method depends on the selected model and input options. Review the assumptions and references above before interpreting the result.
- Choose units and whether the child is a boy or girl.
- Enter the mother’s and father’s heights.
- Read the predicted adult height and range.
Interpretation and limitations
- How accurate is the prediction? About 95% of children end up within roughly 8.5 cm (3.3 in) of the predicted height.
- What else affects height? Nutrition, sleep, health conditions and hormones all play a part alongside genes.
References
External reference verification is pending. The formula and examples describe the current ToolzHive implementation.
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Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the Child Height Predictor
Predict a child's adult height from the parents' heights.
- 1 Choose units and whether the child is a boy or girl.
- 2 Enter the mother’s and father’s heights.
- 3 Read the predicted adult height and range.
Example and practical tips
A mother of 163 cm and a father of 177 cm predict about 176.5 cm for a son and 163.5 cm for a daughter.
Frequently asked questions
How accurate is the prediction?
About 95% of children end up within roughly 8.5 cm (3.3 in) of the predicted height.
What else affects height?
Nutrition, sleep, health conditions and hormones all play a part alongside genes.
Practical guides
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How to Use Child Height Predictor
Predict a child’s adult height from the parents’ heights using the mid-parental height method, with the likely range for most children.
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