Feet & Inches to Centimeters Converter
Tip: You can enter values like 5 ft 7 in, 5 ft 7.5 in, or even 0 ft 70 in.
Why use a feet inches to cm calculator?
If you live in the U.S., you probably think of height in feet and inches. But many countries, health forms, and scientific tools use centimeters. This quick converter helps you switch between systems accurately without doing math in your head.
Common use cases include filling out passport forms, comparing height charts, entering gym and medical data, or checking clothing and bike sizing guides that use metric units.
How the conversion works
Formula
The conversion is straightforward:
- 1 foot = 12 inches
- 1 inch = 2.54 centimeters
- Centimeters = (feet × 12 + inches) × 2.54
Example: 5 feet 7 inches = (5 × 12 + 7) × 2.54 = 170.18 cm.
Quick reference heights
- 4'11" = 149.86 cm
- 5'0" = 152.40 cm
- 5'4" = 162.56 cm
- 5'7" = 170.18 cm
- 5'10" = 177.80 cm
- 6'0" = 182.88 cm
- 6'2" = 187.96 cm
Step-by-step: converting manually
1) Convert feet to inches
Multiply your feet value by 12.
2) Add the remaining inches
Add the inches value to get total inches.
3) Convert inches to centimeters
Multiply total inches by 2.54 to get centimeters.
Tips for accurate results
- Use decimals for precision (example: 5 ft 7.5 in).
- If you only know inches, enter 0 in the feet field.
- Use two decimal places for most practical situations.
- Avoid negative values; heights should be positive numbers.
FAQ
Can I enter more than 12 inches?
Yes. This calculator will still produce the correct conversion. For instance, 0 ft 70 in is valid and equals the same as 5 ft 10 in.
Does this work for kids and adults?
Yes. The calculation is purely unit conversion, so it works for any height.
Why is 2.54 used?
Because one inch is defined exactly as 2.54 centimeters under international measurement standards.
Bottom line
A feet and inches to cm converter is one of those tiny tools that saves time every week. Use the calculator above whenever you need a fast, accurate metric height conversion.