CalcPro

Height Converter

Convert height between feet/inches and centimeters.

How it works

This converter transforms measurements between two height systems: the imperial system (feet and inches) used primarily in the United States, United Kingdom, and a few other nations, and the metric system (centimeters) used internationally. The conversion relies on fixed mathematical relationships between these units.

When you enter a height in feet and inches, the calculator converts both components to centimeters using standard conversion factors. If you input centimeters instead, it reverses the process, breaking the result into whole feet and remaining inches. The tool handles decimal values smoothly, so you can enter precise measurements like 5.5 feet or 172.5 cm.

The formula

Total height (cm) = (feet × 30.48) + (inches × 2.54)

To convert centimeters back to feet and inches: divide the total centimeters by 30.48 to get feet (including decimals), then multiply the decimal portion by 12 to get the remaining inches.

Worked example

Converting 5 feet 9 inches to centimeters:

  1. Multiply feet by 30.48: 5 × 30.48 = 152.4 cm
  2. Multiply inches by 2.54: 9 × 2.54 = 22.86 cm
  3. Add both values: 152.4 + 22.86 = 175.26 cm

Converting 180 cm to feet and inches:

  1. Divide centimeters by 30.48: 180 ÷ 30.48 = 5.906 feet
  2. The whole number is 5 feet
  3. Take the decimal (0.906) and multiply by 12: 0.906 × 12 = 10.87 inches
  4. Result: 5 feet 10.87 inches (or roughly 5'11")

Things to watch

Rounding matters in practical contexts. When you see "5 feet 10.87 inches," many people round to the nearest half-inch (5'11") for everyday use. Medical or sports records, however, often require more precision. If you're comparing heights across documents, check whether the original measurement was rounded.

Regional conventions differ. In the US and UK, height is typically expressed as feet and inches (e.g., 6'2"). In metric countries, centimeters are standard. When communicating internationally—for example, on dating apps, medical forms, or athletic profiles—knowing both formats prevents confusion.

Decimal feet vs. feet and inches. Some calculators or systems express height as decimal feet (e.g., 5.75 feet). This converter uses the more common feet-and-inches format, but the math works the same way: 5.75 feet = 5 feet 9 inches.

Frequently asked questions

How many centimeters is 6 feet?

6 feet equals 182.88 cm. Since 1 foot = 30.48 cm, multiply 6 × 30.48 = 182.88 cm.

What is 180 cm in feet and inches?

180 cm is approximately 5 feet 10.87 inches (or 5'11" when rounded). Divide 180 by 30.48 to get 5.906 feet, then convert the decimal to inches.

Why do different countries use different height measurements?

The US, UK, and a few other countries use the imperial system (feet/inches), while most of the world uses the metric system (centimeters). Conversion tools bridge this gap for international contexts like sports, medicine, and travel.

Is the conversion exact or approximate?

The conversion is mathematically exact: 1 inch = 2.54 cm and 1 foot = 30.48 cm. Small rounding differences appear only when displaying results with limited decimal places.

Can I use this for children's heights?

Yes, this converter works for any height. Children's heights are often tracked in both systems depending on location, so it's useful for comparing growth charts across countries.

What's the tallest and shortest realistic human heights?

The tallest recorded human was about 272 cm (8'11"), and the shortest was around 54 cm (1'9"). This converter handles the full range of human heights accurately.

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