Imperial (Standard) / Metric Calculators

The calculators below will translate Imperial measurements to Metric, or Metric to Imperial. Imperial is also known as English or Standard measurement.

Convert Fraction to:

"

 

=

Millimeters

mm

Convert Decimal to:

"

 

=

Millimeters

mm

Convert Millimeters to:

mm

 

=

Inches

"

Converting Metric to Imperial, or Imperial to Metric, may be helpful in some cases, but it will not work with machine screws, cap screws, nuts, or other parts that require matching thread counts. There is no equivalency on thread counts.

Converting Standard Fractions to Decimals is just a matter of division, but for a quick easy calculation, you can use the calculator below.

Convert Fraction to:

mm

 

=

Decimal (Imperial)

"