Quick Answer: Feet to Inches
One foot equals 12 inches (1 ft = 12 in).
Conversely, 1 in ≈ 0.08333 ft.
Formula: in = ft × 12
Worked examples
- 1 ft = 12 in
- 1.5 ft = 18 in
- 2 ft = 24 in
Method and limitations
Multiply feet by 12. For a feet-and-inches value, multiply the feet by 12 and add the inches. Calculations use full-precision constants; answers in this box are rounded for readability (≈ marks a rounded value) and the calculator shows up to 9 significant figures.
Each factor is exact by definition, derived from exact definitions, or a documented conventional value — see the methodology and sources.
Conversion Formula
Multiply feet by 12. For a feet-and-inches value, multiply the feet by 12 and add the inches.
Step-by-Step Conversion Guide
Follow these steps to convert feet to inches manually:
Start with your value in feet
Example: You want to convert 2 ft
Apply the conversion formula
Use the formula: in = ft × 12
Calculate the result
2 ft = 24 in
Verify your answer
Use our calculator above to double-check your manual calculation.
Quick Mental Math Tip
Half a foot is 6 in and a quarter foot is 3 in, so 5.75 ft = 60 + 9 = 69 in.
Common Conversions
| Feet (ft) | Inches (in) | Inches → Feet |
|---|---|---|
| 1 ft | 12 | 1 in = 0.0833333 ft |
| 1.5 ft | 18 | 1.5 in = 0.125 ft |
| 2 ft | 24 | 2 in = 0.166667 ft |
| 3 ft | 36 | 3 in = 0.25 ft |
| 4 ft | 48 | 4 in = 0.333333 ft |
| 5 ft | 60 | 5 in = 0.416667 ft |
| 5.5 ft | 66 | 5.5 in = 0.458333 ft |
| 6 ft | 72 | 6 in = 0.5 ft |
| 6.5 ft | 78 | 6.5 in = 0.541667 ft |
| 7 ft | 84 | 7 in = 0.583333 ft |
| 8 ft | 96 | 8 in = 0.666667 ft |
| 10 ft | 120 | 10 in = 0.833333 ft |
| 12 ft | 144 | 12 in = 1 ft |
| 15 ft | 180 | 15 in = 1.25 ft |
| 20 ft | 240 | 20 in = 1.66667 ft |
Popular Feet to Inches Conversions
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When You'll Need This Conversion
Cutting and marking
Tapes and cut lists often work in inches; convert a length in feet before marking.
Forms that ask for total inches
Some forms and calculators want height as a single inch value.
Common Mistakes to Avoid
Multiplying the inch part too
In 5 ft 10 in, only the 5 is feet.
(5 × 12) + 10 = 70 in.
Frequently Asked Questions
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Conversion factors on this page are either exact by definition, derived from exact definitions, or conventional values in documented use. Each is listed with its source in our conversion methodology and sources, which cites the BIPM SI Brochure, NIST Special Publication 811 and the relevant IEC or national standards. Results are rounded for display only; calculations use full precision.