What is 1/16 as a decimal?

1/16 is exactly 0.0625 as a decimal.

How many millimetres is 1/16 of an inch?

1/16 of an inch is 1.5875 mm, computed with the exact definition 1 inch = 25.4 mm.

1/16

Fraction1/16

Decimal0.0625

Percent6.25%

1 of 16 equal parts filled — the same share as a bar and as a circle.

Where the decimal comes from

1/16 equals 625/10,000 equals 0.0625.

Multiply the top and bottom by 625 and the denominator becomes 10,000. A fraction over 10,000 is what a decimal is: 0.0625 means 625 thousandths.

Every way to write it

Decimal: 0.0625
Percent: 6.25%
Ratio: 1 : 16 (part to whole)
As inches: 1/16″ = 1.5875 mm

Equivalent fractions

Multiply the top and bottom of 1/16 by the same number and the value does not change:

1/16 = 2/32 = 3/48 = 4/64 = 5/80 = 6/96 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 1/16″ is 1.5875 mm exactly. The nearest marks on the finer rules:

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

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

Common questions

What is 1/16 as a decimal?: 1/16 is exactly 0.0625 as a decimal.
What is 1/16 as a percentage?: 1/16 is exactly 6.25%.
How many millimetres is 1/16 of an inch?: 1/16 of an inch is 1.5875 mm, computed with the exact definition 1 inch = 25.4 mm.

Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 1/16 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.