📏 CM to Feet Converter (Centimeters to Feet and Inches)

What is the CM to Feet Converter?

Every cm to feet converter rests on the same fixed relationship: 1 foot is defined as exactly 30.48 centimeters, and 1 inch is exactly 2.54 centimeters. That definition is not a rounded approximation, it was formally fixed by the 1959 international yard and pound agreement between the United States, the United Kingdom and other English-speaking countries, which tied the imperial inch permanently to the metric system. Because the constant is exact, converting cm to feet never introduces rounding error at the input stage, the only rounding that happens is when you choose how many decimal places to display in the answer.

The reason this matters day to day is that centimeters and feet and inches are used side by side depending on where you are and what you are measuring. Most of the world records height, room dimensions and clothing sizes in centimeters, while the United States and, informally, the United Kingdom still describe a person's height in feet and inches, such as "5 foot 7" instead of 170 cm. Sports statistics, immigration and visa forms, airline baggage limits and furniture or doorway specifications frequently mix the two systems in the same document, which is exactly when a reliable centimeters to feet tool earns its keep.

There are two correct ways to express the answer, and mixing them up is the most common source of confusion. Decimal feet, like 5.58 ft, treats feet as a normal base-ten unit, useful for construction math or spreadsheets. Feet and inches, like 5 ft 6.9 in, keeps inches as their own unit capped at 12 per foot, which is how people actually say and write heights. A cm to feet and inches conversion has to divide centimeters by 2.54 to get total inches first, then use whole-number division to peel off complete feet, leaving a remainder that is always less than 12. Skipping that second step and just taking the decimal portion of the feet value gives a wrong, meaningless number of inches.

Accuracy is the whole point of using a calculator instead of a rough mental estimate. A common shortcut is to treat 1 foot as roughly 30 cm, which is close enough for a quick guess but drifts noticeably at larger heights: over six feet, that shortcut can be off by more than an inch. This cm to feet converter always uses the exact 30.48 cm and 2.54 cm constants, so every result, from a small object measurement to a person's full height, stays accurate to the decimal place you choose.

When to use it

• Converting a height listed in centimeters on an ID, medical chart or international profile into feet and inches.
• Checking furniture, doorway or shipping box dimensions given in cm against a feet and inches spec sheet.
• Comparing athlete or player heights reported in cm (common outside the US) with the feet and inches figures used in US sports coverage.
• Converting a metric measurement for a DIY, construction or interior design project that uses imperial feet.

How to use the CM to Feet Converter

1. Type the height or length in centimeters into the Centimeters box.
2. Read the feet and inches breakdown and the decimal feet value, which fill in automatically.
3. To convert the other way, type a decimal feet value into the Feet box instead and the centimeters figure updates.
4. Check the total inches or meters value if you need those units, then use Copy result to save the answer.

Formula & method

Worked examples

Common heights: cm to feet and inches (150 to 200 cm)

Common feet and inches heights converted to cm

Common mistakes to avoid

• Rounding total inches before splitting into feet and inches. If you round the total-inches figure too early, the leftover inches can come out wrong. Keep full precision through the division, then round only the final feet and inches values.
• Reading the decimal part of feet as inches. 5.58 ft does not mean 5 ft 58 in. The 0.58 is a fraction of a foot, not a count of inches. To get inches, multiply the decimal part by 12 (0.58 x 12 = 6.9 in), which is exactly what this cm to feet converter shows.
• Letting the remaining inches reach 12. A rounded remainder of 12.0 in should actually be 0 in with one extra whole foot. This converter carries that rounding automatically so results never display an impossible "12 in" remainder.
• Using 30 cm as a shortcut for 1 foot. 1 foot is exactly 30.48 cm, not 30 cm. The shortcut is fine for a rough guess but drifts by more than an inch once you get past about six feet, so use the exact constant for anything that needs to be accurate.

Glossary

Centimeter (cm)

A metric unit of length equal to one hundredth of a meter, commonly used worldwide for height and small measurements.

Foot (ft)

An imperial unit of length equal to exactly 30.48 centimeters and to 12 inches.

Inch (in)

An imperial unit of length equal to exactly 2.54 centimeters and to one twelfth of a foot.

Decimal feet

A height or length expressed as a single feet value with a decimal fraction, such as 5.58 ft, instead of separate feet and inches.

Total inches

A length expressed purely in inches with no feet component, used as the intermediate step when converting cm to feet and inches.

Imperial system

The system of measurement using feet, inches, pounds and similar units, still used for everyday height and distance in the United States.

Frequently asked questions