What is 77/100 as a decimal?

77/100 is exactly 0.77 as a decimal.

How many millimetres is 77/100 of an inch?

77/100 of an inch is 19.558 mm, computed with the exact definition 1 inch = 25.4 mm.

77/100

Fraction77/100

Decimal0.77

Percent77%

Where the decimal comes from

77/100 equals 0.77.

The denominator is already a power of ten, and that is what a decimal is: 0.77 means 77 hundredths.

77 of 100 squares — 0.77 of the whole. The same squares read as a percentage: 77%, because percent means per hundred.

Every way to write it

Decimal: 0.77
Percent: 77%
Ratio: 77 : 100 (part to whole)
As inches: 77/100″ = 19.558 mm

Equivalent fractions

Multiply the top and bottom of 77/100 by the same number and the value does not change:

77/100 = 154/200 = 231/300 = 308/400 = 385/500 = 462/600 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 77/100″ is 19.558 mm exactly. The nearest marks on the finer rules:

Rule	Nearest mark	Decimal inches	mm	Difference
16ths	3/4″	0.75	19.05	−0.508 mm
32ths	25/32″	0.78125	19.8438	+0.2858 mm
64ths	49/64″	0.765625	19.4469	−0.1111 mm

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

Common questions

What is 77/100 as a decimal?: 77/100 is exactly 0.77 as a decimal.
What is 77/100 as a percentage?: 77/100 is exactly 77%.
How many millimetres is 77/100 of an inch?: 77/100 of an inch is 19.558 mm, computed with the exact definition 1 inch = 25.4 mm.

0.77 as a fractionThe same number from the decimal's side, with the reduction shown.77% 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 77/100 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.