What is 11/20 as a decimal?

11/20 is exactly 0.55 as a decimal.

How many millimetres is 11/20 of an inch?

11/20 of an inch is 13.97 mm, computed with the exact definition 1 inch = 25.4 mm.

11/20

Fraction11/20

Decimal0.55

Percent55%

11 of 20 equal parts filled .

Where the decimal comes from

11/20 equals 55/100 equals 0.55.

Multiply the top and bottom by 5 and the denominator becomes 100. A fraction over 100 is what a decimal is: 0.55 means 55 hundredths.

55 of 100 squares — 0.55 of the whole. The same squares read as a percentage: 55%, because percent means per hundred.

Every way to write it

Decimal: 0.55
Percent: 55%
Ratio: 11 : 20 (part to whole)
As inches: 11/20″ = 13.97 mm

Equivalent fractions

Multiply the top and bottom of 11/20 by the same number and the value does not change:

11/20 = 22/40 = 33/60 = 44/80 = 55/100 = 66/120 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 11/20″ is 13.97 mm exactly. The nearest marks on the finer rules:

Rule	Nearest mark	Decimal inches	mm	Difference
16ths	9/16″	0.5625	14.2875	+0.3175 mm
32ths	9/16″	0.5625	14.2875	+0.3175 mm
64ths	35/64″	0.546875	13.8906	−0.0794 mm

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

Common questions

What is 11/20 as a decimal?: 11/20 is exactly 0.55 as a decimal.
What is 11/20 as a percentage?: 11/20 is exactly 55%.
How many millimetres is 11/20 of an inch?: 11/20 of an inch is 13.97 mm, computed with the exact definition 1 inch = 25.4 mm.

0.55 as a fractionThe same number from the decimal's side, with the reduction shown.55% as a fractionThe same number as a percentage, with the work shown.Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 11/20 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.