What is 7/10 as a decimal?

7/10 is exactly 0.7 as a decimal.

How many millimetres is 7/10 of an inch?

7/10 of an inch is 17.78 mm, computed with the exact definition 1 inch = 25.4 mm.

7/10

Fraction7/10

Decimal0.7

Percent70%

7 of 10 equal parts filled — the same share as a bar and as a circle.

Where the decimal comes from

7/10 equals 0.7.

The denominator is already a power of ten, and that is what a decimal is: 0.7 means 7 tenths.

70 of 100 squares — 0.7 of the whole. The same squares read as a percentage: 70%, because percent means per hundred.

Every way to write it

Decimal: 0.7
Percent: 70%
Ratio: 7 : 10 (part to whole)
As inches: 7/10″ = 17.78 mm

Equivalent fractions

Multiply the top and bottom of 7/10 by the same number and the value does not change:

7/10 = 14/20 = 21/30 = 28/40 = 35/50 = 42/60 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 7/10″ is 17.78 mm exactly. The nearest marks on the finer rules:

Rule	Nearest mark	Decimal 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

Need a different rule or a tolerance? Nearest fraction · Within tolerance

Common questions

What is 7/10 as a decimal?: 7/10 is exactly 0.7 as a decimal.
What is 7/10 as a percentage?: 7/10 is exactly 70%.
How many millimetres is 7/10 of an inch?: 7/10 of an inch is 17.78 mm, computed with the exact definition 1 inch = 25.4 mm.

Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 7/10 in its place.

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.