0.5 as a Fraction of an Inch
Answer
1/2 in
0.5 in = 1/2 in (1/64 in) = 12.7 mm
0.5 inches equals 1/2 inch, likely the most recognized fraction on any tape measure. It is the nominal size of standard PVC and copper pipe, a frequent plywood and drywall thickness, and one of the most common bolt and socket sizes in general hardware. Sitting exactly at the midpoint of a full inch, it reads as 1/2 in whether you round to 1/16, 1/32, or 1/64 precision.
Try another decimal
Nearest 1/16
1/2"
Nearest 1/32
1/2"
Millimeters
12.7 mm
Related values
| Value | Result |
|---|---|
| Nearest 1/8 in | 1/2 in |
| Nearest 1/16 in | 1/2 in |
| Nearest 1/32 in | 1/2 in |
| Nearest 1/64 in | 1/2 in |
| Millimeters | 12.7 mm |
| Centimeters | 1.27 cm |
| Feet | 0.041667 ft |
How the conversion works
- Split the decimal. Separate the whole-number part from the decimal part. 0.5 has no whole-number portion, so the entire value goes into the fraction conversion.
- Multiply by precision. Multiply the decimal by the denominator you want, 16, 32, or 64, then round to the nearest whole number. 0.5 × 16 = 8 exactly, with no rounding needed.
- Simplify. Reduce the fraction using the greatest common divisor of numerator and denominator. 8/16 shares a factor of 8, simplifying all the way down to 1/2.
- Verify in mm. Multiply the decimal inches by 25.4 to check the metric equivalent: 0.5 × 25.4 = 12.7 mm.
Frequently Asked Questions
0.5 inches equals 1/2 in. This is exact at every common precision, 1/16, 1/32, and 1/64, since half an inch is the most fundamental fractional division of a tape measure.
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