Putting a Feet-and-Inches Height Onto a Metric Form
Almost every form that asks how tall you are wants centimetres. Hospitals record it that way, visa and residency applications expect it, gyms and sports clubs log it that way, and body-mass-index arithmetic simply will not work in feet. If the number in your head is "five ten", you need it as 178 before you can fill anything in.
That is the conversion this page is built around: a height stated the American way turned into the single centimetre figure a clinician, a registrar or a form field is asking for.
Who Needs the Centimetre Figure
Clinical Records
Visas and Registrations
Sport and Fitting
Entering a Height That Has Both Feet and Inches
Turn the inches into a decimal
Divide the inches by 12 and add them to the feet. 5 ft 10 in becomes 5 + 10/12 = 5.833 ft; 5 ft 6 in becomes 5.5 ft; 6 ft 3 in becomes 6.25 ft.
Type the decimal feet in
Put it in the upper field. The centimetre figure fills in immediately underneath — 5.833 gives 177.79, which rounds to the 178 cm you would write on a form.
Round the way the form expects
Clinical records normally keep one decimal (177.8 cm); identity documents and general forms take the nearest whole centimetre.
The reverse trip comes up just as often — a clinic hands you 175 cm and you want to know what that sounds like in feet. Tap the swap arrows and the fields exchange places, so the centimetre reading goes in on top and decimal feet come out below.
Height Chart From Four Foot Eleven to Six Foot Four
Most people never need the arithmetic — they need the one row that matches them. The middle column is what you type into the converter; the last one is what goes on the form.
| Stated height | Decimal feet | Centimetres | Rounded |
|---|---|---|---|
| 4 ft 11 in | 4.917 ft | 149.86 cm | 150 cm |
| 5 ft 4 in | 5.333 ft | 162.56 cm | 163 cm |
| 5 ft 7 in | 5.583 ft | 170.18 cm | 170 cm |
| 5 ft 10 in | 5.833 ft | 177.80 cm | 178 cm |
| 6 ft 0 in | 6.0 ft | 182.88 cm | 183 cm |
| 6 ft 4 in | 6.333 ft | 193.04 cm | 193 cm |
Decimal Feet Go In Exactly As Written
Type 5.833 or 5,833 — both are read the same way — and the centimetre reading keeps up keystroke by keystroke while you test a couple of nearby values.
Turn It Round for a Clinic Reading
One tap on the swap arrows puts centimetres on top, which is the direction you want when a nurse reads a stadiometer out to you.
Copy a Bare Number for a Form Field
The copy button on each field hands over the digits alone, with no unit and no spaces, so an online form that validates strictly still accepts it.
Reach Metres for a BMI Sum
Body mass index divides kilograms by height in metres squared. Pick Meter in the lower unit list and the value you need comes out directly.
Questions About Recording Your Height
How tall is 6 feet in centimetres?
182.88 cm. Forms and passports round it to 183 cm. The half-inch either side matters less than it looks: 5 ft 11.5 in is 181.6 cm and 6 ft 0.5 in is 184.2 cm, so 183 covers the usual measuring error.
Why am I taller in the morning than at night?
The discs between your vertebrae lose fluid under load through the day, costing most adults 1–2 cm by evening. Clinics that track growth measure at a consistent time for exactly this reason, and it is why two forms can honestly disagree by a centimetre.
Should I write the height I remember or measure again?
Measure again if it has been a few years. Adults lose roughly 1 cm per decade from about age 40 as spinal discs thin, so a figure learned at twenty can be two or three centimetres out by sixty — enough to shift a BMI reading.
Are the heights on US driving licences measured?
In most states they are self-reported at the counter, in feet and inches, and never checked. If you are transferring that figure to a metric document, it is worth standing against a wall with a book on your head first.
How do I measure height accurately at home?
Shoes off, heels and shoulder blades against a bare wall, eyes level and looking straight ahead. Rest a flat book on your head, mark the wall at its underside, and measure from the floor. Take three readings and use the middle one.
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