Calculating the net score for a 9-hole round requires the stroke indexes from 1 to 9 assigned to each hole. If the round is played on an 18-hole course, an amended stroke index allocation is needed.
The calculator below converts the stroke indexes of an 18-hole course to a 9-hole round. This is useful when the scorecard does not provide stroke indexes for both individual nines played on an 18-hole golf course.
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update: April 2025
