What is 0.015625 as a fraction?

0.015625 as a fraction is 1/64. Write the digits over 1,000,000 to get 15,625/1,000,000, then divide top and bottom by 15,625.

What is 0.015625 as a percentage?

0.015625 is 1.5625%. Multiplying a decimal by 100 moves the point two places to the right.

How many millimetres is 0.015625 of an inch?

0.015625 inches is 0.396875 mm, using the exact definition 1 inch = 25.4 mm.

0.015625 as a fraction

Fraction1/64lowest terms

Decimal0.015625

Percent1.5625%

How to get there

0.015625 has 6 digits after the point, so it is that many ten-to-the-6 parts: write the digits over 1,000,000 — 15,625/1,000,000.
15,625 and 1,000,000 share a greatest common divisor of 15,625. Divide both by it: 1/64.

1 of 64 equal parts filled.

As a measurement

Read as inches, 0.015625″ is 0.396875 mm exactly. The nearest marks on a rule:

Rule	Nearest mark	Inches	mm	Difference
16ths	0″	0	0	−0.3969 mm
32ths	1/32″	0.03125	0.7938	+0.3969 mm
64ths	1/64″	0.015625	0.3969	exact

Common questions

What is 0.015625 as a fraction?: 0.015625 as a fraction is 1/64. Write the digits over 1,000,000 to get 15,625/1,000,000, then divide top and bottom by 15,625.
What is 0.015625 as a percentage?: 0.015625 is 1.5625%. Multiplying a decimal by 100 moves the point two places to the right.
How many millimetres is 0.015625 of an inch?: 0.015625 inches is 0.396875 mm, using the exact definition 1 inch = 25.4 mm.

The same number, other ways

1/64Everything about the fraction: equivalents, the bar model, the number line.1.5625%The same value as a percentage, with its own derivation.Decimal → fraction chartThe whole lookup table, printable.Nearest fractionMatch 0.015625″ 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.