What is 3/100 as a decimal?

3/100 is exactly 0.03 as a decimal.

How many millimetres is 3/100 of an inch?

3/100 of an inch is 0.762 mm, computed with the exact definition 1 inch = 25.4 mm.

3/100

Fraction3/100

Decimal0.03

Percent3%

Where the decimal comes from

3/100 equals 0.03.

The denominator is already a power of ten, and that is what a decimal is: 0.03 means 3 hundredths.

3 of 100 squares — 0.03 of the whole. The same squares read as a percentage: 3%, because percent means per hundred.

Every way to write it

Decimal: 0.03
Percent: 3%
Ratio: 3 : 100 (part to whole)
As inches: 3/100″ = 0.762 mm

Equivalent fractions

Multiply the top and bottom of 3/100 by the same number and the value does not change:

3/100 = 6/200 = 9/300 = 12/400 = 15/500 = 18/600 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 3/100″ is 0.762 mm exactly. The nearest marks on the finer rules:

Rule	Nearest mark	Decimal inches	mm	Difference
16ths	0″	0	0	−0.762 mm
32ths	1/32″	0.03125	0.7938	+0.0318 mm
64ths	1/32″	0.03125	0.7938	+0.0318 mm

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

Common questions

What is 3/100 as a decimal?: 3/100 is exactly 0.03 as a decimal.
What is 3/100 as a percentage?: 3/100 is exactly 3%.
How many millimetres is 3/100 of an inch?: 3/100 of an inch is 0.762 mm, computed with the exact definition 1 inch = 25.4 mm.

0.03 as a fractionThe same number from the decimal's side, with the reduction shown.3% as a fractionThe same number as a percentage, with the work shown.Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 3/100 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.