Feet to Inches Calculator | Convert ft to in Instantly
Free feet to inches calculator. Instantly convert ft to in with our tool. 1 foot = 12 inches. Includes conversion table, formula, and common height examples.
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Understanding results
The calculator displays:
- Inches value: Your feet measurement converted to inches
- Decimal precision: Results shown to 2 decimal places for fractional feet inputs
For whole foot values, the result will always be a whole number (since 12 × any integer = integer).
Purpose
Quick Answer: Multiply feet by 12 to get inches. 5 feet = 60 inches. 6 feet = 72 inches.
The feet to inches calculator instantly converts any measurement from feet to inches. Whether you're measuring height, room dimensions, or materials for a project, this tool gives you accurate results in seconds.
This is one of the most common length conversions in the US, where feet and inches are the standard units for height and short distances.
How to use
- Enter your value in feet in the input field
- See the result instantly displayed in inches
- For mixed measurements (like 5'6"), convert feet first, then add the extra inches
Quick Conversion Table
| Feet | Inches |
|---|---|
| 1 ft | 12 in |
| 2 ft | 24 in |
| 3 ft | 36 in |
| 4 ft | 48 in |
| 5 ft | 60 in |
| 6 ft | 72 in |
| 7 ft | 84 in |
| 10 ft | 120 in |
Examples
Example 1: Convert 5 feet (average height)
5 feet × 12 = 60 inches
Example 2: Convert 6 feet (tall height)
6 feet × 12 = 72 inches
Example 3: Convert 5.5 feet
5.5 feet × 12 = 66 inches
Note: 5.5 feet = 5 feet 6 inches
Example 4: Convert height 5'10" to inches
(5 × 12) + 10 = 60 + 10 = 70 inches
How it works
Formula: Inches = Feet × 12
The conversion is straightforward because there are exactly 12 inches in 1 foot. This relationship is defined by the US customary and imperial measurement systems.
Example Calculation:
5.5 feet × 12 = 66 inches
For height measurements (feet and inches):
5 feet 6 inches = (5 × 12) + 6 = 60 + 6 = 66 inches
FAQ
How many inches are in a foot?
There are exactly 12 inches in 1 foot. This is the standard conversion used in US customary and imperial measurements.
How do I convert feet to inches?
Multiply feet by 12. Example: 5 feet × 12 = 60 inches.
What is 5 feet in inches?
5 feet = 60 inches (5 × 12 = 60).
What is 6 feet in inches?
6 feet = 72 inches (6 × 12 = 72).
How many inches is 5 foot 6?
5 feet 6 inches = 66 inches. Calculate: (5 × 12) + 6 = 60 + 6 = 66.
How many inches is 5 foot 10?
5 feet 10 inches = 70 inches. Calculate: (5 × 12) + 10 = 60 + 10 = 70.
What is 5'4 in inches?
5 feet 4 inches = 64 inches. Calculate: (5 × 12) + 4 = 60 + 4 = 64.
How do I convert inches back to feet?
Divide inches by 12. Example: 72 inches ÷ 12 = 6 feet.
What is 5.5 feet in inches?
5.5 feet = 66 inches (5.5 × 12 = 66). Note: 5.5 feet is the same as 5 feet 6 inches.
Is 12 inches exactly 1 foot?
Yes, 12 inches = 1 foot exactly. This is the defined standard, not an approximation.
Methodology
How This Calculator Works
This calculator uses the exact conversion factor of 12 inches per foot, which is the defined standard in both US customary and imperial measurement systems.
Conversion Factor: 1 foot = 12 inches (exact)
Validation & Accuracy
Tested: Verified against NIST (National Institute of Standards and Technology) reference values.
Accuracy: Results are mathematically exact since 12 is the defined conversion factor.
Sources
The conversion factor (1 foot = 12 inches) is defined by the US customary system and imperial system of measurements, standardized by NIST.