cm to Feet Converter

If a profile, passport, or fitness app lists your height as 170 cm and you need it in feet, this cm to feet converter gives you the answer in one step: 5 feet 6.9 inches, or about 5.58 decimal feet. Centimeters are the standard height unit almost everywhere in the world, but the United States still uses feet and inches - so converting between the two is one of the most common everyday measurement tasks there is. This page does the conversion both ways and shows exactly how the math works.

The conversion formula

There are two useful ways to express the result. For a single number, divide by 30.48; for feet-and-inches, divide by 2.54 first:

Both formulas come from a single exact fact: 1 inch = 2.54 cm. Since a foot is 12 inches, one foot equals exactly 30.48 cm, and a single centimeter equals about 0.0328084 feet. Because these factors are exact (not approximations), the only error in any answer comes from rounding the display, not from the conversion itself.

A worked example: 170 cm

Take 170 cm and follow the steps. First, total inches: 170 ÷ 2.54 = 66.93 inches. Next, whole feet: floor(66.93 ÷ 12) = floor(5.58) = 5 feet. Finally, the leftover inches: 66.93 − (5 × 12) = 66.93 − 60 = 6.93 inches. So 170 cm is 5 feet 6.9 inches, which rounds to 5 ft 7 in for everyday use. In decimal form it is 170 ÷ 30.48 = 5.58 feet.

How to use this converter

The tool is bidirectional, so you can start from either unit:

1. Have centimeters? Type the value into the "Centimeters" field. The feet and inches fields update as you type.
2. Have feet and inches? Type the feet into one field and the inches into the other; the centimeter value updates instantly.
3. Use the quick chips (160, 170, 180, 190 cm) to jump to common heights without typing.
4. Read the result card for feet and inches up top, plus decimal feet, total inches, and meters underneath.
5. Check the steps if you want to see exactly how the number was derived, or the reference table to compare nearby heights.

There is no "calculate" button - every keystroke recalculates immediately, so you can sweep through a range of values to find what you need.

Who this converter is for

Converting between centimeters and feet comes up far more often than you might expect. This tool is built for:

• People filling out US forms - visas, licenses, gym sign-ups, and medical paperwork that ask for height in feet and inches.
• Travelers and expats moving between metric and imperial countries who need a quick mental model.
• Online daters and gamers translating a profile height between the two systems.
• Parents and coaches tracking a child's or athlete's growth recorded in centimeters.
• DIY and crafts - anyone with a centimeter measurement who needs feet and inches for US-sized materials.

Key terms explained

• Centimeter (cm): one-hundredth of a meter, the base metric unit for everyday lengths like height.
• Foot (ft): an imperial unit equal to exactly 12 inches, or 30.48 cm.
• Inch (in): an imperial unit equal to exactly 2.54 cm; there are 12 in a foot.
• Decimal feet: a height written as a single number with a fraction, like 5.58 ft, useful for spreadsheets and arithmetic.
• Feet and inches: the everyday format where the fractional foot is split out as inches, like 5 ft 7 in.
• Floor: rounding down to the nearest whole number - used to find whole feet before working out the leftover inches.

More worked examples

165 cm: 165 ÷ 2.54 = 64.96 inches. That is floor(64.96 ÷ 12) = 5 feet, with 64.96 − 60 = 4.96 inches left over. So 165 cm is about 5 ft 5 in (5.41 decimal feet).

180 cm: 180 ÷ 2.54 = 70.87 inches. floor(70.87 ÷ 12) = 5 feet, leaving 70.87 − 60 = 10.87 inches. So 180 cm is about 5 ft 10.9 in - essentially 5 ft 11 in (5.91 decimal feet).

183 cm: 183 ÷ 2.54 = 72.05 inches. floor(72.05 ÷ 12) = 6 feet, leaving 0.05 inches. So 183 cm is just a hair over 6 ft 0 in (6.00 decimal feet). The exact six-foot mark is 182.88 cm.

Common cm to feet conversions

Here is a quick chart of the heights people search for most. Values are rounded to the nearest tenth of an inch:

Tips for accurate conversions

• Keep the remainder in inches, not feet. A common error is reading 5.58 feet as "5 feet 58 inches." The 0.58 is a fraction of a foot; multiply it by 12 to get the 6.9 inches.
• Round at the end. Do the math with full precision and round only the final answer, so small errors do not pile up.
• Remember the anchors. 30.48 cm = 1 foot and 2.54 cm = 1 inch. With those two numbers you can sanity-check any result by hand.
• Use decimal feet for math, feet-and-inches for people. Spreadsheets like 5.58; humans like 5 ft 7 in.

Why the exact factor matters

Since 1959, the inch has been internationally defined as exactly 2.54 centimeters. That definition is what makes this conversion reliable: there is no approximation buried in the constant. When you see "1 cm = 0.0328084 ft," that decimal is simply 1 ÷ 30.48 written out, and 30.48 is itself 12 × 2.54. Everything ties back to the single exact inch-to-centimeter relationship, which is why a good converter never needs to "estimate."

Common pitfalls

Most mistakes happen at the rounding stage. People often round 182.88 cm up to 183 and then treat 183 as exactly six feet, which introduces a tiny error. Others confuse the two formulas - dividing by 2.54 (which gives inches) when they wanted decimal feet (divide by 30.48). And a surprising number of charts list "5 foot 7" for everything from 168 to 172 cm because they round aggressively; this converter shows the precise value so you can decide how to round for your context.

Related concepts and conversions

Once you are comfortable with cm to feet, the same exact factors unlock related conversions. To go from feet to centimeters, multiply by 30.48. For meters to feet, multiply by 3.28084 (since a meter is 100 cm) - our Feet to Meters Converter does this both ways. For inches to centimeters, multiply by 2.54. And to express height as a single metric number, divide centimeters by 100 to get meters - 170 cm is 1.70 m. These all share the same 2.54 anchor, so learning one makes the rest easy. For mixed length, weight, and temperature work, the all-in-one Unit Converter handles dozens of units in one place.

Average human heights by country

One reason the cm-to-feet conversion is searched so often is that average height varies between countries, and people compare themselves across the metric and imperial divide. The global average for adult men is roughly 171 cm (5 ft 7.3 in) and for adult women about 159 cm (5 ft 2.6 in), but national figures range widely. The tallest populations, such as the Netherlands, average around 183-184 cm (just over 6 ft) for men, while many populations in South and Southeast Asia average closer to 163-165 cm (about 5 ft 4-5 in). In the United States, the average adult man is about 175 cm (5 ft 9 in) and the average adult woman about 162 cm (5 ft 4 in). Whenever you read a height statistic in one unit and want to picture it in the other, this converter bridges the gap instantly.

Height is also one input into other health metrics. If you want to see where a given height and weight place you, the BMI Calculator and the Ideal Weight Calculator both take height directly, in either centimeters or feet and inches.

Why heights are written in feet and inches

If centimeters are simpler - just one number - why does the United States still split height into feet and inches? The answer is mostly history and habit. The imperial system descends from older English units, and feet and inches were the everyday way to describe a person's stature long before the metric system was standardized. Even after most of the world adopted the metric system, the US kept customary units in daily life, so driver's licenses, medical charts, and casual conversation all still use feet and inches. The result is a quirk: scientists and doctors in the US often record height in centimeters internally, then convert to feet and inches when they speak to patients. That double life - metric on paper, imperial in conversation - is precisely the gap a cm to feet converter closes.

Quick mental-math shortcuts

You will not always have a converter in front of you, so a couple of approximations are worth memorizing. A handy rule is that every 2.5 cm is almost exactly 1 inch (the true factor is 2.54), so you can divide centimeters by 2.5 in your head to get a close inch count, then split into feet. Another shortcut: multiply centimeters by 0.0328 to get decimal feet, or just remember that 30 cm is roughly a foot. For the most common heights, anchor on 150 cm = about 4 ft 11 in and 180 cm = about 5 ft 11 in; almost every adult height falls between those two markers, and you can interpolate from there. Each extra 2.5 cm adds about 1 inch, so 5 cm is roughly 2 inches and 15 cm is roughly 6 inches. These tricks get you within a fraction of an inch - close enough to picture a height - and you can confirm the exact value above.

Rounding rules for height

How you round depends on the context. For a casual profile or a form that only accepts whole inches, round to the nearest inch: 170 cm (5 ft 6.9 in) becomes 5 ft 7 in. For a medical or scientific record, keep one decimal place on the inches, or better yet store the original centimeter value and convert only for display. A common point of confusion is that two nearby centimeter values can round to the same feet-and-inches figure - both 169 cm and 171 cm round to about 5 ft 7 in - so feet and inches is inherently a coarser way to state height. If precision matters, note the centimeters; if you just need to communicate roughly how tall someone is, the rounded feet-and-inches value is perfect.

How it compares to related calculators

This page answers "how tall is this many centimeters in feet and inches?" If your question is slightly different, a sister tool may fit better:

• To convert larger distances in meters, use the Feet to Meters Converter, which handles the metric-to-imperial length jump in both directions.
• To switch body weight between kilograms and pounds, use the kg to Pounds Converter - the natural companion when you are filling out the same metric profile.
• For length, weight, temperature, and volume all in one place, the Unit Converter covers dozens of units beyond height.
• To turn a height into a health metric, the BMI Calculator and Ideal Weight Calculator accept height in either system.

Sources

• National Institute of Standards and Technology (NIST) - unit conversion and the exact 1 in = 2.54 cm definition.
• International System of Units (SI) - the meter and centimeter as base and derived length units.
• 1959 International Yard and Pound Agreement, which fixed the inch at exactly 25.4 mm (2.54 cm).