What is 0.52 as a fraction?

0.52 as a fraction is 13/25. Write the digits over 100 to get 52/100, then divide top and bottom by 4.

What is 0.52 as a percentage?

0.52 is 52%. Multiplying a decimal by 100 moves the point two places to the right.

How many millimetres is 0.52 of an inch?

0.52 inches is 13.208 mm, using the exact definition 1 inch = 25.4 mm.

0.52 as a fraction

Fraction13/25lowest terms

Decimal0.52

Percent52%

How to get there

0.52 has 2 digits after the point, so it is that many hundredths: write the digits over 100 — 52/100.
52 and 100 share a greatest common divisor of 4. Divide both by it: 13/25.

52 of 100 squares — 0.52 of the whole, which is also 52%.

As a measurement

Read as inches, 0.52″ is 13.208 mm exactly. The nearest marks on a rule:

Rule	Nearest mark	Inches	mm	Difference
16ths	1/2″	0.5	12.7	−0.508 mm
32ths	17/32″	0.53125	13.4938	+0.2858 mm
64ths	33/64″	0.515625	13.0969	−0.1111 mm

Common questions

What is 0.52 as a fraction?: 0.52 as a fraction is 13/25. Write the digits over 100 to get 52/100, then divide top and bottom by 4.
What is 0.52 as a percentage?: 0.52 is 52%. Multiplying a decimal by 100 moves the point two places to the right.
How many millimetres is 0.52 of an inch?: 0.52 inches is 13.208 mm, using the exact definition 1 inch = 25.4 mm.

The same number, other ways

13/25Everything about the fraction: equivalents, the bar model, the number line.52%The same value as a percentage, with its own derivation.Decimal → fraction chartThe whole lookup table, printable.Nearest fractionMatch 0.52″ 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.