5 Feet 6 Inches in cm
5' 6" is
167.64000000000001 cm
66 inches, and 167.64000000000001 cm exactly — not approximately. The inch has been defined as 25.4 millimeters since 1959, so this conversion is a definition rather than a measurement, and it has no error term.
Conversion factor checked · How we check
Written 5' 6", said “5 foot 6” — the singular foot is what people say and type, and it means the same height. In metric that is 167.64000000000001 centimetres, spelled that way outside the United States, or 1.68 m.
Every way to write it
| Feet and inches | 5' 6" |
| Said aloud | 5 foot 6 |
| Total inches | 66 in |
| Centimeters | 167.64000000000001 cm |
| Meters | 1.6764 m |
This one lands on a whole inch with nothing to round, which is why the two sides agree exactly.
The heights either side
Where this height sits
Against the measured heights of US adults aged 20 and over, from the National Health and Nutrition Examination Survey — the same figures the CDC growth charts are built from.
- Men
- Taller than about 15% of US adult men, so shorter than the other 85%.
- Women
- Taller than about 82% of US adult women.
A percentile is a rank within a population, not a judgement about one: the same centimetre reading lands at a different rank in a different country, and the survey measures without shoes in the afternoon, when people are up to a centimetre shorter than they were on waking.
Why the answer is rounded at all
An inch is exactly 25.4 millimeters, fixed by agreement in 1959 rather than measured, so every conversion here is exact until somebody asks for it in feet and inches. A round centimeter almost never lands on a whole inch: 170 cm is 66.93 inches, which is 5 feet 6.93 inches. Every official record — licence, passport, medical chart — rounds that to the nearest whole inch, and so does the figure at the top of this page. The exact number is in the table above, where it belongs.