ZOVATOOL

Height Calculator

Predicted Adult Height
175 cm (68.9 in)
Low (−1 SD)166.5 cm
High (+1 SD)183.5 cm

How to use the Height Converter

  1. Enter a height in any unit — cm, m, ft, in, ft+in (like 5'8"), yd, mm, hands (horses).
  2. All other units update instantly.
  3. Feet+inches formatted output — 5'8" not 5.667 ft.
  4. For medical records: cm with 1 decimal is standard.
  5. For construction: mm for high-precision, cm for framing, in for US carpentry.
  6. For equestrian: hands (1 hand = 4 in = 10.16 cm). 15.2 hh = 15 hands + 2 inches, not decimal.
  7. For sports: ft+in for US, cm for FIFA/IOC official documents.
  8. Copy the formatted result for docs, spreadsheets or forms.
  9. Toggle metric/imperial as default preference.
  10. Save frequent conversions for repeat use.
Advertisement
Ad space

Height conversion: from meters to hands, the one calculator that covers all

Height seems simpler than weight — one dimension, no chemistry — but the unit landscape is still messy. Metric is the world standard (cm and meters), the US clings to feet and inches, jewelers use mm for gemstone dimensions, and equestrian sports insist on hands measured at the withers. Every field where height matters — medicine, sports, construction, immigration, aviation — needs cross-unit precision.

The base conversion is fixed by international treaty since 1959: 1 inch = 2.54 cm exactly, 1 foot = 30.48 cm exactly. All feet-inch to metric calculations flow from these. 5'8" = 68 inches × 2.54 = 172.72 cm. The calculator returns full precision and formats the output correctly (68 inches to 5'8", not 5.667 ft — a display error that appears constantly in poorly built tools).

In medicine, cm is standard worldwide because it feeds directly into BMI (kg ÷ m²), body surface area (√(cm × kg ÷ 3600)) and pediatric growth curves plotted per age percentile. US medical records typically show both — cm as primary, ft/in for patient conversation. Height loss over decades is a real clinical marker: adults lose 1–2 cm from age 30 to 70 due to disc compression and postural changes; more than 4 cm loss warrants osteoporosis workup.

Population averages tell a story of nutrition and healthcare. US adult men average 5'9" (175 cm), women 5'4" (162 cm). Netherlands (tallest nation): men 6'0" (183 cm), women 5'7" (170 cm). Global average height rose 10 cm over the last century thanks to improved childhood nutrition — one of the most measurable public health wins of the modern era.

The oddball unit worth knowing: the hand, used exclusively for horses and measured at the withers (shoulder). 1 hand = 4 inches = 10.16 cm. A 16 hh horse is 64 inches tall. Fractional hands use decimals confusingly — 15.2 hh means 15 hands PLUS 2 inches, not 15.2 hands (which would be 15.2 × 4 = 60.8 inches). The calculator handles the notation correctly. Same for yards, mils, cubits and any other historical unit that shows up in a specific trade — one converter, all systems, zero rounding drift.