Height Converter
Estimates adult height from parents using mid-parental formula: (father+mother)/2 plus 6.5cm for boys, minus 6.5cm for g...
Convert height between feet/inches and centimeters/meters.
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How It Works
Estimates adult height from parents using mid-parental formula: (father+mother)/2 plus 6.5cm for boys, minus 6.5cm for girls. Accuracy is plus or minus 10cm.
Quick Reference
Dad 180, Mom 165
Boy estimate
(180+165+13)/2 = 179cm
Dad 175, Mom 160
Girl estimate
(175+160-13)/2 = 161cm
Accuracy range
Plus or minus
±10 cm typical
Tips & Shortcuts
Genetics explains 60-80% of height variation.
Most adult height reached by 16-21 years old.
Common Mistakes
Treating estimate as definitive
Formula predicts within 10cm for most people.
Different units for parents
Convert both parents to cm before calculating.
Frequently Asked Questions
5 feet 10 inches = 70 total inches × 2.54 = 177.8 cm. Each foot = 30.48 cm, each inch = 2.54 cm.
Divide by 2.54 to get total inches: 175 ÷ 2.54 = 68.9 inches = 5 feet 8.9 inches ≈ 5'9".
In the US, the average adult male height is 5'9" (175.3 cm) and average female height is 5'4" (162.1 cm). These vary significantly by country.
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