Inch Fraction Calculator
Convert inch fractions to decimal, convert decimal to inch fractions, convert inches to metric measurements, convert metric measurements to inch fractions, and convert to feet automatically.
Inch Fraction, Decimal, and Metric Results
Imperial Units
Metric Units
Inch Fraction to Decimal Conversions
How to Calculate Inch Fractions
Finding Inch Fractions on a Tape Measure
Finding measurements on a ruler or tape measure can be confusing at first, but once you understand how the marks are laid out then it is far simpler. The markings between the larger inch numbers vary in length.
The longest markings will be the quarter inch markings, ie. the first marking is 1/4 inch, the second is 1/2 (2/4) inch, the third is 3/4 inch.
The next longest markings will be the eight inch markings, ie. the first marking is 1/8 inch, the second is 3/8 inch, the third is 5/8 inch, etc.
The next longest markings will be the sixteenth inch markings, ie. the first marking is 1/16 inch, the second is 3/16 inch, the third is 5/16 inch, etc.
Converting Inches to Metric Measurements
Fraction Decimal and Metric Equivalents
See fraction, decimal, and metric(in millimeters) versions of measurements up to one inch in ^{1}⁄_{64}” increments.
Fraction | Decimal | Millimeters |
---|---|---|
^{1}⁄_{64}” | 0.015625 | 0.396875 |
^{1}⁄_{32}” | 0.03125 | 0.79375 |
^{3}⁄_{64}” | 0.046875 | 1.190625 |
^{1}⁄_{16}” | 0.0625 | 1.5875 |
^{5}⁄_{64}” | 0.078125 | 1.984375 |
^{3}⁄_{32}” | 0.09375 | 2.38125 |
^{7}⁄_{64}” | 0.109375 | 2.778125 |
^{1}⁄_{8}” | 0.125 | 3.175 |
^{9}⁄_{64}” | 0.140625 | 3.571875 |
^{5}⁄_{32}” | 0.15625 | 3.96875 |
^{11}⁄_{64}” | 0.171875 | 4.365625 |
^{3}⁄_{16}” | 0.1875 | 4.7625 |
^{13}⁄_{64}” | 0.203125 | 5.159375 |
^{7}⁄_{32}” | 0.21875 | 5.55625 |
^{15}⁄_{64}” | 0.234375 | 5.953125 |
^{1}⁄_{4}” | 0.25 | 6.35 |
^{17}⁄_{64}” | 0.265625 | 6.746875 |
^{9}⁄_{32}” | 0.28125 | 7.14375 |
^{19}⁄_{64}” | 0.296875 | 7.540625 |
^{5}⁄_{16}” | 0.3125 | 7.9375 |
^{21}⁄_{64}” | 0.328125 | 8.334375 |
^{11}⁄_{32}” | 0.34375 | 8.73125 |
^{23}⁄_{64}” | 0.359375 | 9.128125 |
^{3}⁄_{8}” | 0.375 | 9.525 |
^{25}⁄_{64}” | 0.390625 | 9.921875 |
^{13}⁄_{32}” | 0.40625 | 10.31875 |
^{27}⁄_{64}” | 0.421875 | 10.715625 |
^{7}⁄_{16}” | 0.4375 | 11.1125 |
^{29}⁄_{64}” | 0.453125 | 11.509375 |
^{15}⁄_{32}” | 0.46875 | 11.90625 |
^{31}⁄_{64}” | 0.484375 | 12.303125 |
^{1}⁄_{2}” | 0.5 | 12.7 |
^{33}⁄_{64}” | 0.515625 | 13.096875 |
^{17}⁄_{32}” | 0.53125 | 13.49375 |
^{35}⁄_{64}” | 0.546875 | 13.890625 |
^{9}⁄_{16}” | 0.5625 | 14.2875 |
^{37}⁄_{64}” | 0.578125 | 14.684375 |
^{19}⁄_{32}” | 0.59375 | 15.08125 |
^{39}⁄_{64}” | 0.609375 | 15.478125 |
^{5}⁄_{8}” | 0.625 | 15.875 |
^{41}⁄_{64}” | 0.640625 | 16.271875 |
^{21}⁄_{32}” | 0.65625 | 16.66875 |
^{43}⁄_{64}” | 0.671875 | 17.065625 |
^{11}⁄_{16}” | 0.6875 | 17.4625 |
^{45}⁄_{64}” | 0.703125 | 17.859375 |
^{23}⁄_{32}” | 0.71875 | 18.25625 |
^{47}⁄_{64}” | 0.734375 | 18.653125 |
^{3}⁄_{4}” | 0.75 | 19.05 |
^{49}⁄_{64}” | 0.765625 | 19.446875 |
^{25}⁄_{32}” | 0.78125 | 19.84375 |
^{51}⁄_{64}” | 0.796875 | 20.240625 |
^{13}⁄_{16}” | 0.8125 | 20.6375 |
^{53}⁄_{64}” | 0.828125 | 21.034375 |
^{27}⁄_{32}” | 0.84375 | 21.43125 |
^{55}⁄_{64}” | 0.859375 | 21.828125 |
^{7}⁄_{8}” | 0.875 | 22.225 |
^{57}⁄_{64}” | 0.890625 | 22.621875 |
^{29}⁄_{32}” | 0.90625 | 23.01875 |
^{59}⁄_{64}” | 0.921875 | 23.415625 |
^{15}⁄_{16}” | 0.9375 | 23.8125 |
^{61}⁄_{64}” | 0.953125 | 24.209375 |
^{31}⁄_{32}” | 0.96875 | 24.60625 |
^{63}⁄_{64}” | 0.984375 | 25.003125 |
1″ | 1 | 25.4 |
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