Converting 138 centimeters gives 4 ft 6.3 in. One multiplication does it — 138 × 0.03280839895 = 4.52755905512 feet — and because the factor is defined rather than measured, that answer will not drift over time.
At 138 cm — 1.38 m — a BMI of 18.5 to 25, the band the WHO calls healthy, runs from 35.2 to 47.6 kg (77.7 to 105 lb). BMI is weight in kilograms divided by height in metres squared, so those figures come straight from the height on this page rather than from a chart.
Plenty of people do this in their head: divide by 30 instead of using the exact factor 0.03280839895. At 138 that shortcut gives 4.6 feet, off by 0.07244 feet or about 1.60%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
The formula
138 cm- The quantity being converted
0.03280839895- Exact feet in one centimeter
4.527559055 ft- The converted result
How it works, step by step
- Begin from the figure you have: 138 centimeters.
- Multiply by 0.03280839895, the exact number of feet in one centimeter.
- That gives 4.52755905512 feet, or 4 ft 6.3 in.
- The reverse works the same way with division: 4.527559055 ft ÷ 0.03280839895 = 138 cm.
Worked examples
The calculation
Take 138 cm and multiply by the factor 0.03280839895. The product is 4.52755905512 ft, or 4 ft 6.3 in, and that is the entire method.
Proving it both ways
Run it in reverse — 4.527559055 ft ÷ 0.03280839895 = 138 cm. Matching the input you started from is the proof the direction is right.
How to read your score
Frequently asked questions
What is 138 centimeters in feet and inches?
The answer is 4 ft 6.3 in — or 4.52755905512 feet before any rounding.
How do you convert centimeters to feet?
Multiply by 0.03280839895. So 138 × 0.03280839895 = 4.527559055 feet. The factor comes from a definition rather than a measurement, so it never changes.
What is 4.527559055 feet back in centimeters?
138 centimeters. Dividing by 0.03280839895 undoes the conversion exactly.
What does 138 cm actually look like?
At 138 cm — 1.38 m — a BMI of 18.5 to 25, the band the WHO calls healthy, runs from 35.2 to 47.6 kg (77.7 to 105 lb). BMI is weight in kilograms divided by height in metres squared, so those figures come straight from the height on this page rather than from a chart. The reference table shows the values either side of it for comparison.
What is a centimeter?
One hundredth of a metre, and the everyday metric unit for body measurements and paper sizes.
What is a foot?
Twelve inches, or exactly 0.3048 metres — still standard for human height and aviation altitude in the US.
138 cm in feet — nearby values
| Centimeters | Feet | Unrounded |
|---|---|---|
| 132 cm | 4 ft 4 in | 4.330708661 |
| 133 cm | 4 ft 4.4 in | 4.36351706 |
| 134 cm | 4 ft 4.8 in | 4.396325459 |
| 135 cm | 4 ft 5.1 in | 4.429133858 |
| 136 cm | 4 ft 5.5 in | 4.461942257 |
| 137 cm | 4 ft 5.9 in | 4.494750656 |
| 138 cm | 4 ft 6.3 in | 4.527559055 |
| 139 cm | 4 ft 6.7 in | 4.560367454 |
| 140 cm | 4 ft 7.1 in | 4.593175853 |
| 141 cm | 4 ft 7.5 in | 4.625984252 |
| 142 cm | 4 ft 7.9 in | 4.658792651 |
| 143 cm | 4 ft 8.3 in | 4.69160105 |
| 144 cm | 4 ft 8.7 in | 4.724409449 |
Exact factor: 1 centimeter = 0.0328083989501 feet. The row for 138 cm is the value this page is about.