If you’ve ever needed to convert 5 foot 9 into centimeters for a travel document, a medical form, or just to settle a debate, you’re not alone. The exact answer—175.26 cm—is one of the most searched conversions online because it happens to match the average male height in the United States, according to the CDC (CDC National Center for Health Statistics).

4 related posts

5 feet 9 inches in centimeters: 175.26 cm ·
5 feet 9 inches in inches: 69 inches ·
Conversion factor (1 foot): 30.48 cm ·
Average US man height: 5 ft 9 in

Quick snapshot

1Confirmed facts
2What’s unclear
  • The exact threshold for “tall” varies by culture and era (Our World in Data)
  • Rounding 175 cm to 5’9″ vs. 5’8″ is a convention, not an exact rule (Our World in Data)
  • The social perception of height changes over time and across generations (Our World in Data)
3Timeline signal
  • Global male height increased about 10 cm since 1896 due to improved nutrition (The Lancet)
  • Inch fixed at 2.54 cm by international agreement in 1959 (BIPM)
4What’s next
  • Accurate conversion matters for travel, medical, and sports contexts
  • Expect more calculators to standardize rounding of 175 cm to 5’9″

Five key facts about 5’9″ and its conversion to centimeters cover the essential data:

Label Value Source
Exact conversion of 5’9″ to cm 175.26 cm Brighterly
US male average height 175.3 cm (5 ft 9 in) CDC NCHS
Global male average height 171 cm (5 ft 7 in) Our World in Data
1 foot = ? cm 30.48 cm SplashLearn
1 inch = ? cm 2.54 cm The Calculator Site
5 ft alone in cm 152.4 cm SplashLearn
Height considered tall in US 6 ft 0 in (182.88 cm) or taller Inch Calculator
175 cm in feet and inches 5 feet 8.9 inches Inch Calculator
UK male average height 175.3 cm UK ONS
Netherlands male average height 183 cm (6 ft 0 in) The Lancet
Bottom line: The pattern: Nearly every major data source agrees on the exact conversion, but how that number is interpreted relative to “tall” depends entirely on the regional average.

What height is 5 ft 9 in cm?

Simple conversion formula

  • 1 foot = 30.48 cm (NIST standards)
  • 1 inch = 2.54 cm (BIPM international definition)

Multiply the number of feet by 30.48, add the number of inches multiplied by 2.54.

Step-by-step calculation

  • Convert 5 feet to cm: 5 × 30.48 = 152.4 cm (SplashLearn)
  • Convert 9 inches to cm: 9 × 2.54 = 22.86 cm (Brighterly)
  • Add them: 152.4 + 22.86 = 175.26 cm (The Calculator Site)
  • Alternative method: total inches = 5×12 + 9 = 69 inches; 69 × 2.54 = 175.26 cm (Inch Calculator)
The upshot

Whether you multiply feet or total inches, the result is always 175.26 cm. No rounding, no approximation — it’s an exact standard.

What this means: For anyone filling out a metric form or comparing heights internationally, 5’9″ is reliably 175.26 cm – a value you can cite without hesitation.

Is 5 ft 9 tall for a man?

Average height of US men

  • US male average: 175.3 cm (about 5 ft 9 in) – CDC NCHS
  • UK male average: 175.3 cm – UK ONS
  • China male average: 171.8 cm (5 ft 8 in) – NCBI

Global height comparisons

  • Worldwide male average: ~171 cm (5 ft 7 in) – Our World in Data
  • Netherlands male average: 183 cm (6 ft 0 in) – The Lancet
  • Indonesia male average: 163 cm (5 ft 4 in) – Our World in Data

Perception of tall vs. short

  • In the US, “tall” typically begins at 6 ft 0 in (Inch Calculator).
  • Globally, at 5’9″ you are above the average in most countries, but below average in the Netherlands and parts of Scandinavia.
The paradox

A 5’9″ man is average in the US, tall in Indonesia, and short in the Netherlands — the same number, three different social realities.

The trade-off: Whether 5’9″ feels tall or short depends entirely on the reference population. For international contexts, the raw centimeter value is the only objective measure.

Is 175 cm 5 ′8 or 5 ′9?

Why confusion arises

  • 175 cm converts to 5 feet 8.9 inches (Inch Calculator).
  • Because 8.9 inches rounds to 9 inches, many sources report 5’9″ as the rounded version.
  • Other calculators round to the nearest inch, calling 175 cm “5 foot 9.”

Exact conversion of 175 cm

  • Divide 175 by 2.54 = 68.897 inches.
  • 68.897 ÷ 12 = 5 feet with 8.897 inches remaining (Inch Calculator).
  • So 175 cm is 5 feet 8.9 inches, usually labeled as 5’9″ for convenience.

The catch: If you need exact precision, 175 cm is not exactly 5’9″ — it’s 0.9 inches shy. But for everyday use, the rounding is widely accepted.

How to Convert Feet and Inches to cm: A Step-by-Step Guide

  1. Remember the two constants: 1 foot = 30.48 cm (NIST), 1 inch = 2.54 cm (BIPM).
  2. Convert the feet portion: multiply the number of feet by 30.48.
  3. Convert the inches portion: multiply the inches by 2.54.
  4. Add the two results together.
  5. Example: For 5’9″: 5 × 30.48 = 152.4 cm; 9 × 2.54 = 22.86 cm; total 175.26 cm (Brighterly).
  6. Alternatively, convert everything to inches first (feet × 12 + inches), then multiply by 2.54. For 5’9″: 69 inches × 2.54 = 175.26 cm (The Calculator Site).
Watch the rounding

If you round 175.26 cm to 175 cm in a medical or official document, the equivalent feet-inches can shift, potentially causing errors in dosages or equipment sizing.

The implication: precision is non-negotiable when accuracy directly affects health or compliance.

What’s Clear and What’s Not

Confirmed facts

  • 1 ft = 30.48 cm exactly (NIST)
  • 5 ft 9 in = 175.26 cm (Brighterly)
  • US male average height is 5 ft 9 in (175.3 cm) (CDC NCHS)
  • Global male average height is ~171 cm (Our World in Data)

What’s unclear

  • Exact threshold for “tall” varies by culture (no universal definition)
  • Rounding 175 cm to 5’9″ vs. 5’8″ is a convention, not a physical fact
  • Whether 5’9″ is considered average, tall, or short depends on the reference population
  • The social perception of height changes over time and across generations

“The average height of adult men in the United States is 175.3 cm (approximately 5’9”).”

CDC National Center for Health Statistics (U.S. federal health agency)

“Global heights have increased by about 10 cm over the last 120 years, with the Netherlands now topping the charts at 183 cm.”

The Lancet (peer-reviewed medical journal)

The implications for the average American man are direct: 5’9″ sits right on the national mean, but when you travel to Southeast Asia it feels tall, and in the Netherlands it feels short. For anyone converting heights for international documents, the hard number — 175.26 cm — is the only neutral reference.

Bottom line: 5 foot 9 is exactly 175.26 cm. For U.S. readers: this is your national average, so don’t worry about being “short.” For global travelers: recognize that the same height can be perceived very differently depending on local averages.
Additional sources

youtube.com, youtube.com

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Frequently asked questions

How do I convert 5 ft 9 in to cm by hand?

Multiply 5 feet by 30.48 (to get 152.4 cm), multiply 9 inches by 2.54 (to get 22.86 cm), then add the two results for a total of 175.26 cm.

Is 5’9″ the same as 175 cm?

Not exactly. 5’9″ = 175.26 cm. 175 cm is 0.26 cm shorter, which in everyday terms is negligible, but for strict precision they are different values.

What height in cm is considered tall for a man?

In the US, “tall” usually starts at 6 ft 0 in (182.88 cm). Globally, being above 180 cm (5 ft 11 in) is often considered tall in many countries.

Why do some websites say 175 cm = 5’9″ and others say 5’8″?

Because 175 cm converts to 5 feet 8.9 inches. Some round the 8.9 up to 9 (calling it 5’9″), while others keep it as 5’8″ or add a fraction.

Is 5 ft 9 in a common height for men in the US?

Yes. The CDC reports the average U.S. male height is about 5 ft 9 in (175.3 cm), making it the most common single height for adult men.