What is 1/50 as a decimal?

1/50 is exactly 0.02 as a decimal.

How many millimetres is 1/50 of an inch?

1/50 of an inch is 0.508 mm, computed with the exact definition 1 inch = 25.4 mm.

1/50

Fraction1/50

Decimal0.02

Percent2%

1 of 50 equal parts filled .

Where the decimal comes from

1/50 equals 2/100 equals 0.02.

Multiply the top and bottom by 2 and the denominator becomes 100. A fraction over 100 is what a decimal is: 0.02 means 2 hundredths.

2 of 100 squares — 0.02 of the whole. The same squares read as a percentage: 2%, because percent means per hundred.

Every way to write it

Decimal: 0.02
Percent: 2%
Ratio: 1 : 50 (part to whole)
As inches: 1/50″ = 0.508 mm

Equivalent fractions

Multiply the top and bottom of 1/50 by the same number and the value does not change:

1/50 = 2/100 = 3/150 = 4/200 = 5/250 = 6/300 · more, or pick a denominator

On the number line

As a measurement

Read as inches, 1/50″ is 0.508 mm exactly. The nearest marks on the finer rules:

Rule	Nearest mark	Decimal inches	mm	Difference
16ths	0″	0	0	−0.508 mm
32ths	1/32″	0.03125	0.7938	+0.2858 mm
64ths	1/64″	0.015625	0.3969	−0.1111 mm

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

Common questions

What is 1/50 as a decimal?: 1/50 is exactly 0.02 as a decimal.
What is 1/50 as a percentage?: 1/50 is exactly 2%.
How many millimetres is 1/50 of an inch?: 1/50 of an inch is 0.508 mm, computed with the exact definition 1 inch = 25.4 mm.

Fraction–decimal chartThe everyday set, printable.Rule charts16ths, 32nds, 64ths, 128ths.The rulerSee 1/50 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.