CM to Feet Calculator

CM to feet: converting metric height into the UK's everyday height format

The centimetre is the metric unit used on official UK measurements — passports, driving licences, medical records and most modern height charts — but when people in the UK talk about their own height out loud, they overwhelmingly still say it in feet and inches: "five nine", "six foot two". That gap between the official metric record and everyday spoken height is exactly why "cm to feet" is one of the most consistently searched conversions in the country.

One foot equals exactly 30.48cm (12 inches × 2.54cm per inch), and both figures are fixed, internationally agreed values — so a centimetres-to-feet conversion is always precise arithmetic, never a rough estimate. This calculator handles both directions: converting a metric height (from a form, a medical record, or an international source) into the feet-and-inches figure people actually say out loud, and converting a feet-and-inches figure back into centimetres for anything that requires the metric format.

Quick conversions

The most commonly looked-up height conversions, calculated exactly:

Common cm to feet conversions

A reference table covering the full adult height range, from 140cm to 210cm in 2cm steps, with the total-inches figure alongside for anyone who needs the raw decimal:

Conversion formula and method

Converting centimetres to feet and inches is a two-step calculation:

Total inches = Centimetres ÷ 2.54
Feet = whole number part of (Total inches ÷ 12)
Remaining inches = Total inches − (Feet × 12)

Worked example: cm to feet and inches

Take 172cm. Divide by 2.54: 172 ÷ 2.54 = 67.72 total inches. Divide by 12: 67.72 ÷ 12 = 5.64, so the feet figure is 5. Multiply back out and subtract: 67.72 − (5 × 12) = 7.72in. Result: 172cm is 5ft 7.7in.

Worked example: feet and inches to cm

Take 5ft 9in. Convert to total inches: (5 × 12) + 9 = 69in. Multiply by 2.54: 69 × 2.54 = 175.26cm. This is the calculation the "Feet & Inches → CM" mode above runs automatically.

A quick mental shortcut

For a fast estimate without a calculator, divide the centimetre figure by 30 (rather than the exact 30.48) to get an approximate feet figure — it's close enough for a rough sense of height, though always use the exact 2.54cm-per-inch factor for anything that needs to be precise.

Height in context: real-world reference points

• 5ft 4in (162.6cm) — close to the average UK adult female height reported in national health survey data.
• 5ft 9in (175.3cm) — close to the average UK adult male height, and a frequently quoted reference figure in health and fashion contexts.
• 6ft 0in (182.9cm) — a widely recognised "round number" height threshold, often used as a benchmark in dating profile and fitness discussions.
• 5ft 6in (167.6cm) — roughly the midpoint between typical adult male and female average heights in the UK.
• 6ft 6in (198.1cm) — well above the 99th percentile for UK adult height, a range mostly associated with specific sporting contexts like basketball.

Extended cm to feet table (children's and shorter heights)

Useful for children's growth charts and shorter height ranges — 90cm to 140cm in 5cm steps:

Historical context: the foot, the inch, and metrication

The foot and inch are among the oldest surviving units of length, with roots in Roman and Anglo-Saxon measurement traditions — historically based on body proportions before standardisation made them fixed, abstract units. Different regions and trades used slightly different "foot" and "inch" lengths for centuries, which caused genuine problems for construction, trade and taxation, much like the historical stone did for weight.

The exact modern relationship — 1 inch = 2.54cm precisely — was fixed by the International Yard and Pound Agreement of 1959, signed by the UK, US, Australia, Canada, New Zealand and South Africa. Before that agreement, there were small but real differences between the UK and US definitions of the inch. The UK began shifting to metric measurement for official and scientific purposes from the 1960s onward, and centimetres are now the standard unit on medical records, official documents and most modern measuring tools — but feet and inches have proven exceptionally durable for describing human height in everyday British and American speech.

Where cm to feet conversion actually gets used

• Medical and fitness records: height is recorded in centimetres on NHS and international medical systems, but patients often want to know or state their height in feet and inches.
• Travel and visas: passport applications, driving licences and some visa forms outside the UK ask for height in centimetres.
• Online profiles and dating apps: many international platforms default to centimetres, prompting UK and US users to convert to the feet-and-inches format they think in.
• DIY and furniture: European and international furniture and fittings are specified in centimetres, which UK buyers sometimes want to sanity-check against feet-based room measurements.
• Sport and performance data: athlete height is frequently published in centimetres in international competition data, which UK and US commentary often converts back to feet and inches for a familiar reference.
• Clothing and equipment sizing: some international sizing charts specify garment or equipment length in centimetres, which shoppers used to imperial measurements may want translated before ordering.

Because height is one of the few measurements almost everyone in the UK carries a strong mental reference for in imperial units — even those who otherwise think entirely in metric — cm-to-feet conversion remains a genuinely everyday need rather than a specialist one.

Common mistakes when converting cm to feet

• Forgetting to carry over a full foot. If your leftover-inches figure comes out at 12 or more, that's an arithmetic slip — it should carry over into an extra foot, the same way a stone-and-pounds figure carries over at 14lb.
• Rounding the total-inches figure before dividing by 12. Round only the final feet-and-inches answer, not the intermediate total-inches figure, or the result can drift by a fraction of an inch.
• Confusing feet-and-inches notation with decimal feet. "5.9 feet" is not "5 feet 9 inches" — 5.9 feet is 5 feet plus 0.9 × 12 = 10.8 inches, i.e. 5ft 10.8in, a full inch taller than 5ft 9in.
• Using an approximate 30cm-per-foot shortcut for anything precise. It's a handy mental estimate, but the real figure is 30.48cm — the 0.48cm difference adds up over multiple feet.

Accuracy and precision note

Because 1 inch = 2.54cm is a fixed, internationally agreed definition rather than a measured approximation, every conversion on this page and in the calculator above is mathematically exact. The only rounding happens in how many decimal places of the leftover inches are displayed — shown to one decimal place above for readability, with full precision available if a specific use case needs it.

A quick note

All conversions above use the exact internationally defined relationship between the inch and the centimetre. For anything precision-critical (medical, legal or commercial use), always confirm against the source figures rather than a rounded display value.

References

• Weights and Measures Act 1985 (legislation.gov.uk)
• NHS: BMI healthy weight calculator