What is 0.23 as a fraction?

0.23 as a fraction is 23/100. The digits go over 100, and 23 and 100 share no common factor, so it is already in lowest terms.

What is 0.23 as a percentage?

0.23 is 23%. Multiplying a decimal by 100 moves the point two places to the right.

How many millimetres is 0.23 of an inch?

0.23 inches is 5.842 mm, using the exact definition 1 inch = 25.4 mm.

0.23 as a fraction

Fraction23/100lowest terms

Decimal0.23

Percent23%

How to get there

0.23 has 2 digits after the point, so it is that many hundredths: write the digits over 100 — 23/100.
23 and 100 share no factor but 1, so 23/100 is already in lowest terms.

23 of 100 squares — 0.23 of the whole, which is also 23%.

As a measurement

Read as inches, 0.23″ is 5.842 mm exactly. The nearest marks on a rule:

Rule	Nearest mark	Inches	mm	Difference
16ths	1/4″	0.25	6.35	+0.508 mm
32ths	7/32″	0.21875	5.5563	−0.2858 mm
64ths	15/64″	0.234375	5.9531	+0.1111 mm

Common questions

What is 0.23 as a fraction?: 0.23 as a fraction is 23/100. The digits go over 100, and 23 and 100 share no common factor, so it is already in lowest terms.
What is 0.23 as a percentage?: 0.23 is 23%. Multiplying a decimal by 100 moves the point two places to the right.
How many millimetres is 0.23 of an inch?: 0.23 inches is 5.842 mm, using the exact definition 1 inch = 25.4 mm.

The same number, other ways

23/100Everything about the fraction: equivalents, the bar model, the number line.23%The same value as a percentage, with its own derivation.Decimal → fraction chartThe whole lookup table, printable.Nearest fractionMatch 0.23″ 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.