bolt bore unit

Hi, as per the ASME B16.5, under the metric unit system, the bolt bore size is given in imperial, in my project the unit system is metric, how should I get the imperial unit for the bolt bore size?

thanks a lot in advance;

Hi, as per the ASME B16.5, under the metric unit system, the bolt bore size is given in imperial, in my project the unit system is metric, how should I get the imperial unit for the bolt bore size?

thanks a lot in advance;