What is 0.375 as a fraction?

0.375 as a fraction is 3/8. Write the digits over 1,000 to get 375/1,000, then divide top and bottom by 125.

What is 0.375 as a percentage?

0.375 is 37.5%. Multiplying a decimal by 100 moves the point two places to the right.

How many millimetres is 0.375 of an inch?

0.375 inches is 9.525 mm, using the exact definition 1 inch = 25.4 mm.

0.375 as a fraction

Fraction3/8lowest terms

Decimal0.375

Percent37.5%

How to get there

0.375 has 3 digits after the point, so it is that many thousandths: write the digits over 1,000 — 375/1,000.
375 and 1,000 share a greatest common divisor of 125. Divide both by it: 3/8.

3 of 8 equal parts filled.

As a measurement

Read as inches, 0.375″ is 9.525 mm exactly. The nearest marks on a rule:

Rule	Nearest mark	Inches	mm	Difference
16ths	3/8″	0.375	9.525	exact
32ths	3/8″	0.375	9.525	exact
64ths	3/8″	0.375	9.525	exact

Common questions

What is 0.375 as a fraction?: 0.375 as a fraction is 3/8. Write the digits over 1,000 to get 375/1,000, then divide top and bottom by 125.
What is 0.375 as a percentage?: 0.375 is 37.5%. Multiplying a decimal by 100 moves the point two places to the right.
How many millimetres is 0.375 of an inch?: 0.375 inches is 9.525 mm, using the exact definition 1 inch = 25.4 mm.

The same number, other ways

3/8Everything about the fraction: equivalents, the bar model, the number line.37.5%The same value as a percentage, with its own derivation.Decimal → fraction chartThe whole lookup table, printable.Nearest fractionMatch 0.375″ 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.