5/6

Fraction5/6
Decimal≈ 0.8333333333exactly 0.8(3)
Percent≈ 83.333333%exactly 83.(3)%

5 of 6 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 5/6: 6 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 ÷ 6 = 8remainder 2
  2. 20 ÷ 6 = 3remainder 2— this remainder has come around before, so from here the digits repeat

Written exactly: 0.8(3) — the parentheses mark the block that repeats forever.

Every way to write it

Decimal
≈ 0.8333333333
Percent
≈ 83.333333%
Ratio
5 : 6 (part to whole)
As inches
5/6″ = 21.166667 mm

Equivalent fractions

Multiply the top and bottom of 5/6 by the same number and the value does not change:

5/6 = 10/12 = 15/18 = 20/24 = 25/30 = 30/36 · more, or pick a denominator

On the number line

0 1 5/6

As a measurement

Read as inches, 5/6″ is 21.166667 mm exactly. The nearest marks on the finer rules:

RuleNearest markDecimal inchesmmDifference
16ths13/16″ 0.812520.6375−0.5292 mm
32ths27/32″ 0.8437521.4313+0.2646 mm
64ths53/64″ 0.82812521.0344−0.1323 mm

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

Common questions

What is 5/6 as a decimal?
5/6 is 0.8333333333 rounded; exactly, it is the repeating decimal 0.8(3).
What is 5/6 as a percentage?
5/6 is about 83.333333% as a percentage.
How many millimetres is 5/6 of an inch?
5/6 of an inch is 21.166667 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 5/6 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.