How height conversion works
Since the International Yard and Pound Agreement of 1959, one inch has been defined as exactly 2.54 centimeters — not approximately, exactly. So converting cm to feet and inches (or feet and inches back to cm) is exact arithmetic; the only thing that ever differs between charts is how much they round at the end. This converter works in both directions and shows the unrounded figures alongside the everyday rounded ones.
The formula
Here cm is the height in centimeters, feet and inches are the imperial pair, and 2.54 is the exact number of centimeters in one inch.
Worked examples — both directions
Feet & inches → cm: 5 ft 10 in = 70 inches, and 70 × 2.54 = 177.8 cm (1.778 m) — exactly.
cm → feet & inches: 172 cm ÷ 2.54 = 67.72 inches = 5 ft 7.72 in, which rounds to 5 ft 8 in.
Common heights quick reference
| Centimeters | Exact | Nearest inch |
|---|---|---|
| 160 cm | 5 ft 2.99 in | 5′3″ |
| 170 cm | 5 ft 6.93 in | 5′7″ |
| 175 cm | 5 ft 8.9 in | 5′9″ |
| 180 cm | 5 ft 10.87 in | 5′11″ |
| 185 cm | 6 ft 0.83 in | 6′1″ |
Why your ID may not agree with this calculator
Two reasons. First, rounding conventions: a US driver's license records whole inches, a European passport whole centimeters, and each office rounds however the measuring clerk feels like — so 179 cm can legitimately appear as 5′10″ on one document and 5′11″ on another. Second, you genuinely aren't one fixed height: the discs in your spine compress under gravity through the day, so most people measure roughly a centimeter taller in the morning than in the evening. If a precise figure matters, measure at a consistent time of day and keep the unrounded value — this converter gives it to you.