Enter your father's and mother's heights to see a target adult height and a likely range. It uses the simple formula paediatricians also use.
For a boy: (father + mother + 13) ÷ 2. For a girl: (father + mother − 13) ÷ 2. The target range is ±8.5 cm around the result. The method goes back to standards published by the British growth expert J. M. Tanner and colleagues in 1970, and paediatricians still use it in growth assessments.
Example: with a father of 178 cm and a mother of 163 cm, the target is 177 cm for a boy and 164 cm for a girl.
The 13 cm in the formula is the average height difference between men and women. Today the gap in the United States is 13.7 cm.
The target height only uses the parents' heights. Nutrition, health and the timing of puberty matter too. Most children (about 95%) end up within ±8.5 cm of the target, so the range is wide. In many countries children grow up slightly taller than their parents on average, and the formula doesn't account for that. Predictions that use a child's current height, weight and bone age are more accurate.
Not medical advice. If you're worried about a child's growth, talk to a paediatrician. Tracking growth on a chart tells you far more than a single estimate.
| Father ↓ / Mother → | 150 | 155 | 160 | 165 | 170 | 175 |
|---|---|---|---|---|---|---|
| 165 | 164 | 166.5 | 169 | 171.5 | 174 | 176.5 |
| 170 | 166.5 | 169 | 171.5 | 174 | 176.5 | 179 |
| 175 | 169 | 171.5 | 174 | 176.5 | 179 | 181.5 |
| 180 | 171.5 | 174 | 176.5 | 179 | 181.5 | 184 |
| 185 | 174 | 176.5 | 179 | 181.5 | 184 | 186.5 |
| 190 | 176.5 | 179 | 181.5 | 184 | 186.5 | 189 |
| Father ↓ / Mother → | 150 | 155 | 160 | 165 | 170 | 175 |
|---|---|---|---|---|---|---|
| 165 | 151 | 153.5 | 156 | 158.5 | 161 | 163.5 |
| 170 | 153.5 | 156 | 158.5 | 161 | 163.5 | 166 |
| 175 | 156 | 158.5 | 161 | 163.5 | 166 | 168.5 |
| 180 | 158.5 | 161 | 163.5 | 166 | 168.5 | 171 |
| 185 | 161 | 163.5 | 166 | 168.5 | 171 | 173.5 |
| 190 | 163.5 | 166 | 168.5 | 171 | 173.5 | 176 |