5/12

Fraction5/12
Decimal≈ 0.4166666667exactly 0.41(6)
Percent≈ 41.666667%exactly 41.(6)%

5 of 12 equal parts filled — the same share as a bar and as a circle.

Where the decimal comes from

There is no rewrite over 10, 100 or 1000 for 5/12: 12 has a prime factor other than 2 and 5, so no whole-number multiplier reaches a power of ten. Watch the long division to see what happens instead — the remainders start circling, and once a remainder comes back, the digits must too:

  1. 50 ÷ 12 = 4remainder 2
  2. 20 ÷ 12 = 1remainder 8
  3. 80 ÷ 12 = 6remainder 8— this remainder has come around before, so from here the digits repeat

Written exactly: 0.41(6) — the parentheses mark the block that repeats forever.

Every way to write it

Decimal
≈ 0.4166666667
Percent
≈ 41.666667%
Ratio
5 : 12 (part to whole)
As inches
5/12″ = 10.583333 mm

Equivalent fractions

Multiply the top and bottom of 5/12 by the same number and the value does not change:

5/12 = 10/24 = 15/36 = 20/48 = 25/60 = 30/72 · more, or pick a denominator

On the number line

0 1 5/12

As a measurement

Read as inches, 5/12″ is 10.583333 mm exactly. The nearest marks on the finer rules:

RuleNearest markDecimal inchesmmDifference
16ths7/16″ 0.437511.1125+0.5292 mm
32ths13/32″ 0.4062510.3188−0.2646 mm
64ths27/64″ 0.42187510.7156+0.1323 mm

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

Common questions

What is 5/12 as a decimal?
5/12 is 0.4166666667 rounded; exactly, it is the repeating decimal 0.41(6).
What is 5/12 as a percentage?
5/12 is about 41.666667% as a percentage.
How many millimetres is 5/12 of an inch?
5/12 of an inch is 10.583333 mm, computed with the exact definition 1 inch = 25.4 mm.

Related

Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 5/12 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.