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Conversion Calculators

Sailboat parts, hardware and equipment products are specified in both imperial and metric measurements. In most cases, the metric dimension shown is calculated from the imperial measurement and rounded to a whole number. For example, 5/16" is generally shown as 8 mm, while an exact conversion would be 7.9375 mm. When referring to a line diameter, it is sufficient to approximate the conversion. In cases where a dimension is critical, exact metric dimensions are normally preferred over imperial or SAE measurements.





Conversion Calculators