1/11

1 of 11 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 1/11: 11 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. 10 ÷ 11 = 0remainder 10
2. 100 ÷ 11 = 9remainder 1— this remainder has come around before, so from here the digits repeat

Written exactly: 0.(09) — the parentheses mark the block that repeats forever.

Every way to write it

Decimal

≈ 0.0909090909

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Percent

≈ 9.090909%

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Ratio

1 : 11 (part to whole)

As inches

1/11″ = 2.309091 mm

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Equivalent fractions

Multiply the top and bottom of 1/11 by the same number and the value does not change:

1/11 = 2/22 = 3/33 = 4/44 = 5/55 = 6/66 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 1/11″ is 2.309091 mm exactly. The nearest marks on the finer rules:

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

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