HeightFast

Any unit, instantly

How tall are you — in every unit at once

Type in feet and inches, centimeters, or meters. See the rest immediately, plus your growth percentile, a linked BMI and where you stand next to the famous.

Your height

Pick an input below — conversions update live.

Centimeters—
Meters—
Feet + inches—

Growth percentile

Where does this height rank?

Add an age and sex to see the percentile for your group.

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Enter an age and sex to see where this height ranks.

Linked BMI

Your weight, against your height

Add your weight to see BMI and the healthy weight band.

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Celebrities

Compare your height

Your bar is amber; famous heights are blue.

built for quick switches between imperial and metric height

HeightFast exists for the moment someone needs your height in a unit you do not think in. A doctor's form asks for centimeters, a fitness app wants meters, and a US ID card still wants feet and inches. Instead of doing the multiplication by 2.54 in your head or scrolling through conversion charts, you type one measurement and read the rest. It also folds in age, sex, and weight so the percentile and healthy-weight context lands on the same screen without a second lookup.

one field in, every unit out

  1. Pick your starting unit by clicking Feet + inches, Centimeters, or Meters.
  2. Type your measurement into the matching Feet, Inches, Centimeters, or Meters field.
  3. Add Age, Sex, and Weight (kg) if you want percentile and weight context.
  4. Read the converted values appearing instantly across every unit row.
  5. Scan below the converter for percentile and healthy-weight notes tied to your entries.

Height conversion questions

How do I convert 5'7" to centimeters?

Multiply the feet by 30.48 and the inches by 2.54, then add them: 5 ft 7 in = 5×30.48 + 7×2.54 = 152.4 + 17.78 = 170.18 cm. The converter above does this instantly.

Why is my percentile different from someone else's?

Percentile compares you to the height distribution for a specific age and sex, drawn from standard growth references. As you age (or if you change sex), the comparison group changes, so the percentile moves.

Is BMI accurate for everyone?

BMI is a useful screening number, but it does not separate muscle from fat and can mislabel very athletic people. Use it as a rough guide alongside your doctor's assessment, not as a verdict.

Tall, short, or somewhere between

All guides →

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