This is the inches to fractions calculator, a simple and intuitive tool that helps you convert any decimal to fraction inches. Do you want to transform the length measured in mm to inches fraction? That's not a problem at all! Alternatively, you can also turn any fraction to inches, and then to its inch fraction, adjusting for the appropriate precision. Converting inches to fractions has never been this entertaining, has it?
How to convert decimal to fraction inches?
Transforming a distance in its decimal form to its fraction inches is almost the same as converting any decimal to a regular fraction. Almost. Principally, we have to find the ratio of two numbers, the numerator and the denominator. The only difference is that the denominator should be to the power of 2: 2, 4, 8, 16, etc.
So, how to convert decimal to inch fraction?
 Let's take your decimal value,
x
 Choose the precision, or in other words, the value of denominator,
d
 Multiply these numbers and round them to the closest whole number,
n = round(d*x)
 The resulting inch fraction is then
^{n}/_{d}
As you can see, the outcome is sometimes only an approximation of real value because of rounding. But for typical everyday measurements, it's accurate enough, especially when you choose a precision of ^{1}/_{32}
or higher.
By the way, did you know that music intervals also rely on dyadic fractions (fractions with the denominator 2ⁿ), as it concerns frequencies?
How to convert distance in mm to inches fraction?
Imagine you want to buy new tires for your bike, or you're preparing a spot for your new TV. You take out your ruler or meterstick, and get to measuring. But it's in mm, or cm, or another metric unit your not exactly familiar with. So, is there an easy way to convert mm to inches fraction?
The answer is YES:

If you have the length in mm, divide the result by
25.4

If you have the length in cm, divide the result by
2.54

If you have the length in m, divide the result by
0.0254

Then convert this decimal to fraction inches as you've learned from the previous section
You can convert any length unit to inches, but you don't have to remember all the formulas by heart  just use our inches to fraction calculator, and choose one of the most common length units.
Fraction to inches conversion table
Take a look at this table if you want to find any inch fraction between 0" and 1", with steps of 1⁄64".
Fraction Inches  Decimal Inches ["]  Millimeters [mm]    Fraction Inches  Decimal Inches["]  Millimeters [mm] 

1⁄64"  0.015625  0.396875    33⁄64"  0.515625  13.096875 
1⁄32"  0.03125  0.79375    17⁄32"  0.53125  13.49375 
3⁄64"  0.046875  1.190625    35⁄64"  0.546875  13.890625 
1⁄16"  0.0625  1.5875    9⁄16"  0.5625  14.2875 
5⁄64"  0.078125  1.984375    37⁄64"  0.578125  14.684375 
3⁄32"  0.09375  2.38125    19⁄32"  0.59375  15.08125 
7⁄64"  0.109375  2.778125    39⁄64"  0.609375  15.478125 
1⁄8"  0.125  3.175    5⁄8"  0.625  15.875 
9⁄64"  0.140625  3.571875    41⁄64"  0.640625  16.271875 
5⁄32"  0.15625  3.96875    21⁄32"  0.65625  16.66875 
11⁄64"  0.171875  4.365625    43⁄64"  0.671875  17.065625 
3⁄16"  0.1875  4.7625    11⁄16"  0.6875  17.4625 
13⁄64"  0.203125  5.159375    45⁄64"  0.703125  17.859375 
7⁄32"  0.21875  5.55625    23⁄32"  0.71875  18.25625 
15⁄64"  0.234375  5.953125    47⁄64"  0.734375  18.653125 
1⁄4"  0.25  6.35    3⁄4"  0.75  19.05 
17⁄64"  0.265625  6.746875    49⁄64"  0.765625  19.446875 
9⁄32"  0.28125  7.14375    25⁄32"  0.78125  19.84375 
19⁄64"  0.296875  7.540625    51⁄64"  0.796875  20.240625 
5⁄16"  0.3125  7.9375    13⁄16"  0.8125  20.6375 
21⁄64"  0.328125  8.334375    53⁄64"  0.828125  21.034375 
11⁄32"  0.34375  8.73125    27⁄32"  0.84375  21.43125 
23⁄64"  0.359375  9.128125    55⁄64"  0.859375  21.828125 
3⁄8"  0.375  9.525    7⁄8"  0.875  22.225 
25⁄64"  0.390625  9.921875    57⁄64"  0.890625  22.621875 
13⁄32"  0.40625  10.31875    29⁄32"  0.90625  23.01875 
27⁄64"  0.421875  10.715625    59⁄64"  0.921875  23.415625 
7⁄16"  0.4375  11.1125    15⁄16"  0.9375  23.8125 
29⁄64"  0.453125  11.509375    61⁄64"  0.953125  24.209375 
15⁄32"  0.46875  11.90625    31⁄32"  0.96875  24.60625 
31⁄64"  0.484375  12.303125    63⁄64"  0.984375  25.003125 
1⁄2"  0.5  12.7    1"  1  25.4 
Let's convert inches to fraction  inches to fraction calculator in practice
Imagine you've bought a wooden panel, 5 meters long. You plan to cut it into six equal parts, but you have only a tape measure with the fractional inches scale. We can measure the length with precision down to ^{1}/_{32}"
. Here is how to deal with the problem:

Divide 5 m by 6,
5 m / 6 = ^{5}/_{6} m
. It's the length of each part. 
Convert the measurement in mm to inches by dividing the value by 25.4, and rounding the outcome to two decimal digits (those will be our significant figures):
(^{5}/_{6} m) / 25.4 = 32.81 in
. 
Our precision is
^{1}/_{32}"
. Multiply the value above by 32:32.81 in * 32 = 1049.92 in
. 
Round the outcome to the nearest whole number,
1050 in
. 
Finally, we can convert the length from inches to fraction:
^{1050}/_{32}"
. 
As there are countless equivalent fractions to our result, we can make our lives easier by simplifying this inch fraction. Find the least common multiple of 1050 and 32, which is 2. Divide both numerator and denominator by 2, so we get
^{525}/_{16}"
. As it's an improper fraction, convert it to a mixed number:32 ^{13}/_{16}"
(you can use the modulo operation to find the quotient quickly). If you want to go even further, let's extract feet from the result of the mm to inches fraction conversion. The result is finally:2' 8 ^{13}/_{16}"
As you can see, there are a few steps you should take to obtain the outcome. You can save time by using our inches to fractions calculator, as it shows the result immediately!