Softonic

Feet to Inches Converter

Step 1 / 4 Feet to inches

Enter a decimal measurement in feet, such as 5.75, and convert it to inches using the exact factor of 12. The funnel view also shows the centimeter equivalent, so metric-first readers can check US and UK dimensions without mental arithmetic. It is handy for height notes, furniture specs, room measurements, lumber, screen mounts and any drawing that still uses ft and in.

How the conversion works

  1. 1

    Enter feet

    Use a decimal feet value like `5.5`. For mixed feet and inches, convert the inch part first: `5 ft 9 in` becomes `5 + 9/12 = 5.75`.

  2. 2

    Multiply by 12

    The converter applies `inches = feet x 12`, the exact relationship because `1 ft = 12 in`.

  3. 3

    Check the result

    The main result is decimal inches. In funnel mode, you also get the centimeter equivalent based on `1 ft = 30.48 cm`.

  4. 4

    Reuse the value

    Copy the summary or compare half and double values when you are scaling a plan, shelf, cable or height measurement.

Feet to inches reference for common lengths

Feet and inches are still common in US and UK product specs, building notes, aviation contexts and human height descriptions. Use the table to sanity-check the number before you copy it into a plan or calculator.

Common conversions

Feet Inches Centimeters Typical use
0.5 ft 6 in 15.24 cm Small clearance or trim
1 ft 12 in 30.48 cm Ruler length, modular spacing
2 ft 24 in 60.96 cm Shelf depth, cabinet width
3 ft 36 in 91.44 cm One yard, small table height
4 ft 48 in 121.92 cm Sheet width, bench length
5 ft 60 in 152.4 cm Short room or furniture dimension
5.75 ft 69 in 175.26 cm A height written as 5 ft 9 in
6 ft 72 in 182.88 cm Adult height, clearance checks
8 ft 96 in 243.84 cm US ceiling or board length
10 ft 120 in 304.8 cm Longer boards, cables or layouts

Decimal feet and mixed feet

The input expects a decimal feet value. If your source is written with feet and inches, turn the inch part into a fraction of a foot first:

feet + inches / 12

Examples:

  • 5 ft 6 in becomes 5 + 6/12 = 5.5 ft.
  • 5 ft 9 in becomes 5 + 9/12 = 5.75 ft.
  • 6 ft 3 in becomes 6 + 3/12 = 6.25 ft.

Practical tips

  • Keep linear and area units separate. Convert each length first, then multiply if you need area. 1 sq ft = 144 sq in.
  • Match the precision to the job. A furniture spec can usually tolerate fewer decimals than a CAD drawing or a machined part.
  • Use centimeters as a reality check. For metric markets, the cm value helps you spot obvious mistakes before ordering imported parts or reading a US manual.

Frequently Asked Questions

Convert the inch part to feet first: 9 / 12 = 0.75, then add it to the feet. Type 5.75 in the converter.

Most markets use metric measurements, but many imported products, US plans and height references still use feet and inches. The cm value lets you compare both systems quickly.

Yes. One foot is exactly 12 inches. The international foot is also defined as exactly 0.3048 m, so 1 ft = 30.48 cm without rounding.

Use it for each linear side first. For area, multiply the converted lengths afterwards, or use 1 sq ft = 144 sq in when you specifically need square inches.

No. The converter processes the value in memory for the request and keeps no record afterwards.

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