Until recently, our calculators for calculating the WHS Handicap Index and Initial Handicap did not accept values of the entered Score Differentials less than 1.0. The reason was the limitations of the conversion tools used.
Now, after some changes, the calculators take the full range of entered values. The only limitation is the reasonable range of achievable Score Differentials (-20 …. 144).
You can try the modified calculators here: