What is 0.77 as a fraction?

0.77 as a fraction is 77/100. The digits go over 100, and 77 and 100 share no common factor, so it is already in lowest terms.

What is 0.77 as a percentage?

0.77 is 77%. Multiplying a decimal by 100 moves the point two places to the right.

How many millimetres is 0.77 of an inch?

0.77 inches is 19.558 mm, using the exact definition 1 inch = 25.4 mm.

0.77 as a fraction

Fraction77/100lowest terms

Decimal0.77

Percent77%

How to get there

0.77 has 2 digits after the point, so it is that many hundredths: write the digits over 100 — 77/100.
77 and 100 share no factor but 1, so 77/100 is already in lowest terms.

77 of 100 squares — 0.77 of the whole, which is also 77%.

As a measurement

Read as inches, 0.77″ is 19.558 mm exactly. The nearest marks on a rule:

Rule	Nearest mark	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

Common questions

What is 0.77 as a fraction?: 0.77 as a fraction is 77/100. The digits go over 100, and 77 and 100 share no common factor, so it is already in lowest terms.
What is 0.77 as a percentage?: 0.77 is 77%. Multiplying a decimal by 100 moves the point two places to the right.
How many millimetres is 0.77 of an inch?: 0.77 inches is 19.558 mm, using the exact definition 1 inch = 25.4 mm.

The same number, other ways

77/100Everything about the fraction: equivalents, the bar model, the number line.77%The same value as a percentage, with its own derivation.Decimal → fraction chartThe whole lookup table, printable.Nearest fractionMatch 0.77″ against any rule, with the exact error.

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.