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# Inches - Fractional vs. Decimal Equivalents

## The decimal equivalents of eights, sixteenths, thirty-seconds and sixty-fourths of an inch.

Convert from fractional inches to equivalent decimal inches (and mm):

Inches
fractionaldecimal

Eights
1/8 0.125
1/4 0.250
3/8 0.375
1/2 0.500
5/8 0.625
3/4 0.750
7/8 0.875
Sixteenths
1/16 0.0625
3/16 0.1875
5/16 0.3125
7/16 0.4375
9/16 0.5625
11/16 0.6875
13/16 0.8125
15/16 0.9375
Thirty-seconds
1/32 0.03125
3/32 0.09375
5/32 0.15625
7/32 0.21875
9/32 0.28125
11/32 0.34375
13/32 0.40625
15/32 0.46875
17/32 0.53125
19/32 0.59375
21/32 0.65625
23/32 0.71875
25/32 0.78125
27/32 0.84375
29/32 0.90625
31/32 0.96875
Sixty-fourths
1/64 0.015625
3/64 0.046875
5/64 0.078125
7/64 0.109375
9/64 0.140625
11/64 0.171875
13/64 0.203125
15/64 0.234375
17/64 0.265625
19/64 0.296875
21/64 0.328125
23/64 0.359375
25/64 0.390625
27/64 0.421875
29/64 0.453125
31/64 0.484375
33/64 0.515625
35/64 0.546875
37/64 0.578125
39/64 0.609375
41/64 0.640625
43/64 0.671875
45/64 0.703125
47/64 0.734375
49/64 0.765625
51/64 0.796875
53/64 0.828125
55/64 0.859375
57/64 0.890625
59/64 0.921875
61/64 0.953125
63/64 0.984375

Length Units Converter

### Fraction to Decimal - Example

Convert 1/8" to decimal:

1. numerator is top number - numerator is 1
2. denominator is bottom number - denominator is 8
3. divide the top number with the bottom number - 1/8 = 0.125

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## Related Topics

• Dimensions - Sizes and dimensions of pipes and tubes, and their fittings - inside and outside diameter, weight and more.
• Basics - The SI-system, unit converters, physical constants, drawing scales and more.
• Miscellaneous - Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.

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Temperature

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Length

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km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

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kg/cm2
psi
inches H2O

Flow

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m3/h
US gpm
cfm

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