What is 0.7 as a fraction?

0.7 as a fraction is 7/10. The digits go over 10, and 7 and 10 share no common factor, so it is already in lowest terms.

What is 0.7 as a percentage?

0.7 is 70%. Multiplying a decimal by 100 moves the point two places to the right.

How many millimetres is 0.7 of an inch?

0.7 inches is 17.78 mm, using the exact definition 1 inch = 25.4 mm.

0.7 as a fraction

Fraction7/10lowest terms

Decimal0.7

Percent70%

How to get there

0.7 has 1 digit after the point, so it is that many tenths: write the digits over 10 — 7/10.
7 and 10 share no factor but 1, so 7/10 is already in lowest terms.

70 of 100 squares — 0.7 of the whole, which is also 70%.

As a measurement

Read as inches, 0.7″ is 17.78 mm exactly. The nearest marks on a rule:

Rule	Nearest mark	Inches	mm	Difference
16ths	11/16″	0.6875	17.4625	−0.3175 mm
32ths	11/16″	0.6875	17.4625	−0.3175 mm
64ths	45/64″	0.703125	17.8594	+0.0794 mm

Common questions

What is 0.7 as a fraction?: 0.7 as a fraction is 7/10. The digits go over 10, and 7 and 10 share no common factor, so it is already in lowest terms.
What is 0.7 as a percentage?: 0.7 is 70%. Multiplying a decimal by 100 moves the point two places to the right.
How many millimetres is 0.7 of an inch?: 0.7 inches is 17.78 mm, using the exact definition 1 inch = 25.4 mm.

The same number, other ways

7/10Everything about the fraction: equivalents, the bar model, the number line.70%The same value as a percentage, with its own derivation.Decimal → fraction chartThe whole lookup table, printable.Nearest fractionMatch 0.7″ 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.