📏 Height Converter
Convert between centimeters and feet & inches
Written by Albert Mateos · Founder & Editor
Last reviewed: May 2, 2026
Formula: 1 inch = 2.54 cm
Origin of the units
The foot has anatomical roots — historical "feet" varied from city to city across medieval Europe, ranging from roughly 250 to 335 mm. Standardization came in stages: the British Imperial foot was fixed in 1824, and the modern international foot was defined under the 1959 International Yard and Pound Agreement as exactly 0.3048 m, with one inch equal to 2.54 cm exactly. The metric system originated with the French Revolution in 1799, when the metre was first defined as one ten-millionth of the distance from the equator to the North Pole through Paris. The metre is now an SI base unit defined by the speed of light: it is the length light travels in vacuum during 1/299,792,458 of a second. Since the foot and inch are defined exactly in terms of the metre, every cm ↔ ft/in conversion is mathematically exact rather than empirical.
Why these conversions matter in fitness
Height feeds into nearly every body-composition and performance formula. BMI uses metres squared in its denominator, so even people who think in feet and inches need a clean conversion before comparing against any chart. The Devine, Robinson, Miller, and Hamwi ideal-weight formulas all use inches above 60 (5 ft) as their reference. Allometric scaling of strength records (Wilks, IPF GL points) builds on bodyweight but is interpreted relative to height. DEXA scan reports and pediatric growth charts mix systems by region — US clinical reports often mix kilograms with feet-and-inches, while European reports typically use centimetres throughout. Ergonomic gym setup (rack heights, seat positions, bench-press arch geometry) lives in inches in some manuals and centimetres in others.
Common rounding & accuracy notes
For body height, 1 cm or half an inch is the practical resolution — anything finer is swallowed by daily variation (you are about 1–2 cm shorter in the evening than in the morning due to spinal compression). When converting cm to ft/in, the standard is to express the result as feet plus a remainder in inches: 175 cm becomes 5'9" (because 175 / 2.54 ≈ 68.9 in, then 68.9 in = 5 ft 8.9 in, conventionally rounded to 5'9"). Be careful with mixed notations: 5.9 ft is not 5'9" — it is 5 ft + 0.9 ft, which is 5 ft 10.8 in. Use 5'9" or 5 ft 9 in to avoid that ambiguity.
Quick reference table
| Centimetres | Feet & inches | Total inches |
|---|---|---|
| 150 cm | 4'11" | 59.1 in |
| 155 cm | 5'1" | 61.0 in |
| 160 cm | 5'3" | 63.0 in |
| 165 cm | 5'5" | 65.0 in |
| 170 cm | 5'7" | 66.9 in |
| 175 cm | 5'9" | 68.9 in |
| 180 cm | 5'11" | 70.9 in |
| 185 cm | 6'1" | 72.8 in |
| 190 cm | 6'3" | 74.8 in |
| 195 cm | 6'5" | 76.8 in |
| 200 cm | 6'7" | 78.7 in |
How it works
Convert between centimeters (cm) and feet & inches instantly. Enter a value in either field and the other updates automatically. The formula: divide cm by 2.54 to get total inches, then split into feet and remaining inches. Or multiply feet by 30.48 and add inches × 2.54 to get cm. Ideal for medical forms, fitness profiles, or comparing height data across measurement systems.
Frequently Asked Questions
- How do I convert centimeters to feet and inches?
- Divide the centimeter value by 2.54 to get total inches, then divide by 12 to get feet with the remainder as inches. For example, 180 cm equals about 70.87 inches, which is 5 feet 10.87 inches. This converter handles the math automatically.
- Why do some countries use feet while others use centimeters?
- The metric system (centimeters) is the international standard used by most countries and all scientific fields. The United States, and informally the UK and Canada, still use feet and inches for everyday height measurements. Medical records increasingly use centimeters worldwide.
- What is the average height for adults?
- The global average height is approximately 171 cm (5 ft 7 in) for men and 159 cm (5 ft 3 in) for women, though this varies significantly by country and ethnicity. Northern European countries tend to have taller averages, while Southeast Asian countries tend to have shorter averages.