### Metric to Imperial

Insert the length of the screw in millimeters into the calculator.

Multiply the number by 0.03937 to determine the length of the screw in inches.

Insert the gauge of the screw in millimeters into the calculator.

Multiply the number by 0.03937 to determine the gauge of the screw in inches.

Subtract 0.06 from the gauge of the screw in inches.

Divide the new number by 0.013. The result is the imperial measurement of the screw's gauge.

Write the screw size in the following format: (imperial screw gauge size) x (screw length in inches).

### Imperial to Metric

Insert the length of the screw in inches into the calculator. Remember that the imperial screw measurement format is (gauge of screw) x (length of screw).

Multiply the number by 25.4 to convert the inches to millimeters.

Insert the screw's gauge number into the calculator.

Multiply the number by 0.013. Add 0.06 to this new value to determine the gauge of the screw in inches.

Multiply the gauge of the screw in inches by 25.4 to convert the inches into millimeters. Write the screw size in the following format: (screw gauge in millimeters) | (screw length in millimeters).

## Things You Will Need

- Calculator

## Tip

- Alternately, you can refer to a metric/imperial size conversion chart to check the size of your screw.