Feet to Centimeters Converter
Convert feet to centimeters — one foot is exactly 30.48 cm. Results update as you type; exact factors shown.
One foot is 30.48 centimeters — see the exact factor, not a rounded rule of thumb.
How the feet to centimeters converter works
Every length is converted through the meter, the SI base unit of length. The inch has been defined as exactly 25.4 mm since the 1959 international yard and pound agreement, so a foot is exactly 0.3048 m, a yard 0.9144 m and a statute mile 1,609.344 m. The nautical mile is 1,852 m by international definition.
The US uses customary units (US gallon, short ton, °F) in daily life; NIST SP 811 gives the exact SI factors.
Common length conversions
| From | To | Units |
|---|---|---|
| 1 ft | 30.48 cm | foot to centimeters |
| 2 ft | 60.96 cm | feet to centimeters |
| 3 ft | 91.44 cm | feet to centimeters |
| 4 ft | 121.92 cm | feet to centimeters |
| 5 ft | 152.4 cm | feet to centimeters |
| 5.5 ft | 167.64 cm | feet to centimeters |
| 6 ft | 182.88 cm | feet to centimeters |
| 6.5 ft | 198.12 cm | feet to centimeters |
| 7 ft | 213.36 cm | feet to centimeters |
| 8 ft | 243.84 cm | feet to centimeters |
| 10 ft | 304.8 cm | feet to centimeters |
| 20 ft | 609.6 cm | feet to centimeters |
Units in this converter and their exact factors
| Unit | Symbol | One unit in meters |
|---|---|---|
| millimeter | mm | 0.001 meter |
| centimeter | cm | 0.01 meter |
| meter | m | 1 meter |
| kilometer | km | 1,000 meter |
| inch | in | 0.0254 meter |
| foot | ft | 0.3048 meter |
| yard | yd | 0.9144 meter |
| mile | mi | 1,609.344 meter |
| nautical mile | nmi | 1,852 meter |
FAQFrequently asked questions about length conversion
How many cm in a foot?
30.48 exactly.
How tall is 6 feet in cm?
182.88 cm.
What is 5 foot 10 in cm?
177.8 cm — convert the inches first, so 5.833 feet.
Why is the foot exactly 30.48 cm?
It follows from the 1959 definition of the inch as exactly 2.54 cm.
How do I convert feet and inches together?
Multiply the feet by 30.48 and the inches by 2.54, then add.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Institute of Standards and Technology (NIST) — United States's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.