31 inches is equivalent to 2.58333333333333 feet.

We know (by definition) that: 1 in ≈ 0.083333333 ft

We can set up a proportion to solve for the number of feet.

1   in 31   in ≈ 0.083333333   ft x   ft

Now, we cross multiply to solve for our unknown x:

x   ft ≈ 31   in 1   in * 0.083333333   ft → x   ft ≈ 2.5833333229999997   ft

Conclusion: 31   in ≈ 2.5833333229999997   ft

The inverse of the conversion factor is that 1 foot is equal to 0.387096774193548 times 31 inches.

It can also be expressed as: 31 inches is equal to 1 0.387096774193548 feet.

Approximation

An approximate numerical result would be: thirty-one inches is about two point five eight feet, or alternatively, a foot is about zero point three nine times thirty-one inches.

Units involved

This is how the units in this conversion are defined:

Inches

The inch (abbreviation: in or ″) is a unit of length in the imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot. Derived from the Roman uncia (twelfth), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb. Traditional standards for the exact length of an inch have varied in the past, but since the adoption of the international yard during the 1950s and 1960s it has been based on the metric system and defined as exactly 2.54 cm.

Feet

The foot is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet compose a yard.

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.

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