Free Height Converter
Convert height units instantly — centimeters to feet and inches, meters, and millimeters. Shows exact feet and inches display. Free, symmetrical, no sign-up.
Exact Conversion Formula & Multipliers
Human height conversion uses the same fixed length constants as general length conversion — 1 inch = 2.54 cm exactly and 1 foot = 30.48 cm exactly — but is commonly displayed in the feet-and-inches combined format (e.g. 5'10") rather than decimal feet. This converter computes the whole-foot component by integer division and the remainder in inches, then cross-checks the result against the equivalent centimeter value so the two never drift apart from rounding.
Practical Real-World Scenarios
- Medical and fitness records: height is charted in centimeters on most international medical forms but in feet and inches on US driver's licenses and passports.
- Sports statistics: international sports databases list athlete height in centimeters, while US sports media almost universally reports feet and inches.
- Travel and visas: some countries require height listed in centimeters on official documents, catching US travelers off guard when filling out forms abroad.
Historical & Technical Background
Feet-and-inches height reporting is a direct holdover from British imperial measurement culture exported to the US and a handful of other countries, while centimeter-based height became the global default following widespread metrication in the 20th century. The persistence of the feet-and-inches format specifically for height — even in otherwise metric-leaning contexts — reflects how deeply it's embedded in everyday speech ('he's six foot two') rather than any technical advantage.
Precision & Accuracy Statement
Every conversion factor used on this page is checked against internationally recognized reference standards — NIST Handbook 44 length-unit definitions — rather than approximated or rounded for display. Where a constant is fixed by international definition (such as 1 inch = 2.54 cm, or standard gravity = 9.80665 m/s²), we use the exact defined value. Where a figure is a practical industry convention rather than a physical constant, that distinction is stated explicitly above so results are never presented with false precision.
How This Converter Works
Height is expressed in centimeters across most of the world, but feet and inches remain the common format in the US, UK, and Canada for personal height. Our converter shows the exact feet and inches display alongside all metric values.
Common Conversions
| Centimeters (cm) | Feet & Inches | Meters (m) | Context |
|---|---|---|---|
| 155 cm | 5' 1" | 1.55 m | Short adult height |
| 165 cm | 5' 5" | 1.65 m | Average global female height |
| 170 cm | 5' 7" | 1.70 m | Below-average male height |
| 175 cm | 5' 9" | 1.75 m | Average male height (US/UK) |
| 180 cm | 5' 11" | 1.80 m | Above-average male height |
| 183 cm | 6' 0" | 1.83 m | Six feet exactly |
| 190 cm | 6' 3" | 1.90 m | Tall — NBA point guard average |