Stroke index allocation - 9-hole course

Calculating the net score for an 18-hole round requires the stroke indexes from 1 to 18 assigned to each hole. If the round is played on a 9-hole course (indexes from 1 to 9), an amended stroke index allocation is needed.

The calculator below converts the stroke indexes (SI) of a 9-hole course to an 18-hole round. This is useful when the scorecard does not provide stroke indexes for an 18-hole golf round.