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Online Ruler

Length converter

Inches to feet.

Split a long inch reading into whole feet and remaining inches, or keep it as a decimal-foot value.

66 in = 5.5 ft
Nearest inch fraction≈ 66 in
Fraction rounding difference+0 mm
Metric length1,676.4 mm
Feet and inches5 ft 6 in

The marker shows the fractional part of one inch. This diagram illustrates tick positions; it is not a physical-size ruler.

Reverse conversion ↔Measure on screen ↗

Conversion formula

feet = inches ÷ 12

Enter the source length above. The result updates immediately. These calculations use exact length definitions: 1 m = 100 cm = 1000 mm, 1 in = 25.4 mm, and 1 ft = 12 in. Only the displayed answer and fractional ruler mark are rounded. The feet-and-inches output splits a length into whole feet and remaining inches; decimal feet do not encode an inch count.

Worked example

66 inches is exactly 5.5 ft, or 5 ft 6 in. A reading of 66 3/8 inches becomes 5.53125 ft and means 5 ft 6 3/8 in. Dividing by twelve changes the numerical unit, not the physical length.

Conversion table: in → ft

Select a source value to load it into the calculator. Decimal results are displayed to at most six places; inch fractions in this table are rounded to 1/16 inch.

Inches → Feet
Inches (in)Feet (ft)Nearest inch fraction
0.083333≈ 1 in
0.5≈ 6 in
1≈ 12 in
1.5≈ 18 in
2≈ 24 in
2.5≈ 30 in
3≈ 36 in
4≈ 48 in
5≈ 60 in
5.5≈ 66 in
6≈ 72 in
8≈ 96 in

When to use this conversion

Use this when an instruction lists a long length only in inches but you want a feet-and-inches tape reading. Fractions can be entered directly, including mixed values such as 66 3/8. The whole feet are separated from the remaining inches in the result.

A decimal such as 5.5 ft does not mean 5 ft 5 in. The decimal part is a fraction of twelve inches. Multiply that part by twelve, or use the mixed output provided here. Rounding a fractional inch to a whole inch discards the original ruler detail.

Exact conversion versus a ruler reading

The unit relationship is exact, but a measured object may have uncertainty. At 1/16 inch, the maximum rounding difference is half a tick: 1/32 inch, or 0.79375 mm. The calculator shows the actual rounding difference for your value. Use a finer division only if the source measurement and physical instrument support that precision.

Next steps

Numerical conversion needs no display calibration. Comparing a physical object against your screen does. Use the ruler for small objects, a verified paper ruler away from your display, or an appropriate calibrated instrument for safety-critical measurements.

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Reference: NIST unit conversion factors. Calculations use the international foot, not historical survey-foot units. Fractions are explicitly approximate. NIST ↗