What is 1/32 as a decimal?

1/32 is exactly 0.03125 as a decimal.

How many millimetres is 1/32 of an inch?

1/32 of an inch is 0.79375 mm, computed with the exact definition 1 inch = 25.4 mm.

1/32

Fraction1/32

Decimal0.03125

Percent3.125%

1 of 32 equal parts filled .

Where the decimal comes from

1/32 equals 3125/100,000 equals 0.03125.

Multiply the top and bottom by 3125 and the denominator becomes 100,000. A fraction over 100,000 is what a decimal is: 0.03125 means 3125 thousandths.

Every way to write it

Decimal: 0.03125
Percent: 3.125%
Ratio: 1 : 32 (part to whole)
As inches: 1/32″ = 0.79375 mm

Equivalent fractions

Multiply the top and bottom of 1/32 by the same number and the value does not change:

1/32 = 2/64 = 3/96 = 4/128 = 5/160 = 6/192 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 1/32″ is 0.79375 mm exactly. The nearest marks on the finer rules:

Rule	Nearest mark	Decimal inches	mm	Difference
16ths	1/16″	0.0625	1.5875	+0.7938 mm
32ths	1/32″	0.03125	0.7938	exact
64ths	1/32″	0.03125	0.7938	exact

Need a different rule or a tolerance? Nearest fraction · Within tolerance

Common questions

What is 1/32 as a decimal?: 1/32 is exactly 0.03125 as a decimal.
What is 1/32 as a percentage?: 1/32 is exactly 3.125%.
How many millimetres is 1/32 of an inch?: 1/32 of an inch is 0.79375 mm, computed with the exact definition 1 inch = 25.4 mm.

Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 1/32 in its place.

Where this comes from. Exact rational arithmetic on the values shown — fractions are pairs of integers until display, and inch–metric conversion uses 25.4 mm to the inch, exact by definition since 1959. See the full methodology.