Measurement Conversion Calculators

A selection of calculators for converting measurements. Converts fractions to millimetres, millimetres to fractions, decimals to millimetres, millimetres to 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.