Construction
Feet and Inches Calculator
Convert feet + inches into total inches, decimal feet, meters, and centimeters.
Free to use — no sign-up or login.
Total inches
in
Decimal feet
ft
Meters
m
Centimeters
cm
Amortization schedule
| # | Date | Payment | Principal | Extra | Interest | Balance |
|---|---|---|---|---|---|---|
Add the leftover inches to 12 times the feet. 5 ft 6 in is 66.0 inches, 5.50 decimal feet, and 1.676 m. Centimeters show one decimal: 167.6 cm.
Starting from meters is the meters and centimeters calculator.
Short decimals on purpose
Inches and centimeters keep one decimal. Decimal feet use two. Meters from inches use three, so 1.676 m is the shown value, not a longer raw product.
One length, four readings
The four outputs are the same length. They are not four different measurements.
Worked example: 5 ft 6 in
Feet 5, inches 6. Total 66.0 in, 5.50 ft, 1.676 m, and 167.6 cm.
\[ L = 12\times 5 + 6 = 66\ \mathrm{in} \]
Frequently asked questions
What does the feet and inches calculator measure?
5 ft 6 in displays as 1.676 m, which is 1.68 m if you only keep two decimals.
How many decimal places does feet and inches calculator show?
5 ft 6 in displays as 1.676 m, which is 1.68 m if you only keep two decimals. Lengths, areas, volumes, and money use two decimals. Purchase counts are whole numbers.
Does feet and inches calculator include waste?
There is no waste term. This is a unit conversion.
Can feet and inches calculator mix units?
No. feet and inches calculator expects every input in the unit printed on its label.
Is feet and inches calculator a code or structural check?
No. feet and inches calculator is a quantity estimate. Local rules and site conditions stay outside the formula.
References
Assumptions and limitations
Inches are not reduced modulo 12. Entering 5 ft 14 in is kept as 74 inches.