Feet to Inches
( ft → in )
Instantly convert feet to inches. Enter any value below and get an accurate result with the full formula and reference table.
How to Convert Feet to Inches
Converting feet to inches is simple — multiply the number of feet by 12. This is because one foot is defined as exactly 12 inches. The conversion works for whole numbers, decimals, and fractional feet.
Step-by-Step Example
Let’s convert 5 feet 8 inches to total inches (or just 5.6667 feet):
1. If you have feet and inches separately: multiply the feet part by 12 and add the remaining inches.
Example: 5 ft 8 in = (5 × 12) + 8 = 60 + 8 = 68 inches.
2. If you have a decimal feet value like 5.75 ft: multiply by 12 → 5.75 × 12 = 69 inches (which is 5 ft 9 in).
Why 12?
The foot has been divided into 12 inches since ancient times, likely because 12 is a highly composite number making fractional divisions easy (halves, thirds, quarters). This standard was carried into the imperial and US customary systems.
When You’d Use Each Unit
Feet are used for measuring height, room dimensions, and real estate. Inches are handy for smaller measurements like screen sizes, furniture dimensions, and precision construction. Converting between them is a daily task in many professions.
Common feet values converted to inches — including fractional feet.
| Feet (ft) | Feet + Inches | Inches (in) |
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