Explore provisional 18-hole handicap calculations using the USGA differential-selection table, counted scores and correctly staged course/playing rounding.
01 / INPUTS & ASSUMPTIONS
Provisional 18-hole calculation, not an official certified Handicap Index. Full history, caps, exceptional-score reductions and committee decisions are not reconstructed. Enter records oldest to newest; default PCC 0 is an explicit assumption.
02 / RESULT & EXPLANATION
Provisional 18-hole illustration only. Low Handicap Index history, soft/hard caps, exceptional-score reductions and committee review are not reconstructed. Enter already authorized per-record adjustments if known; this does not certify the record. Nine-hole scores need official expected-score handling and are not doubled here. Use an authorized service for an official Handicap Index; no GHIN integration is provided.
| Record | Date | Differential | Entered adjustment | Adjusted differential | Counted |
|---|---|---|---|---|---|
| 1 | Order supplied | 13.0 | 0 | 13.0 | No |
| 2 | Order supplied | 12.0 | 0 | 12.0 | No |
| 3 | Order supplied | 11.0 | 0 | 11.0 | Yes |
| Record count | Lowest used | Adjustment |
|---|---|---|
| 3 | 1 | -2 |
| 4 | 1 | -1 |
| 5 | 1 | 0 |
| 6 | 2 | -1 |
| 7 | 2 | 0 |
| 8 | 2 | 0 |
| 9 | 3 | 0 |
| 10 | 3 | 0 |
| 11 | 3 | 0 |
| 12 | 4 | 0 |
| 13 | 4 | 0 |
| 14 | 4 | 0 |
| 15 | 5 | 0 |
| 16 | 5 | 0 |
| 17 | 6 | 0 |
| 18 | 6 | 0 |
| 19 | 7 | 0 |
| 20 | 8 | 0 |
Enter your values locally; no inputs are uploaded.
Check validation feedback before reviewing the browser-generated result.
Review the explanation, copy supported outputs or reset the workspace.
Enter the values and units for golf handicap calculator, review the stated scope, then choose Calculate. Use the worked explanation and bounded tables to check the result; copy or reset locally.
See which of the latest twenty differentials count, the small-record adjustment, and the unrounded course value used for final playing-handicap rounding.
Golf Handicap Calculator inputs and calculations remain in browser memory. No external processing service receives entered values. Existing website infrastructure may log ordinary page requests; copying occurs only when selected.
The model uses (113 / slope rating) times (adjusted gross score minus course rating minus entered PCC), then rounds to one decimal. PCC zero in examples is an explicit user assumption, not a retrieved course result.
The published USGA Rule 5.2a table is used for three to twenty records. Three use the lowest one minus 2.0; four use the lowest one minus 1.0; six use the lowest two average minus 1.0. The full table is available with the results, and twenty use the lowest eight.
Enter records oldest to newest. Only the latest twenty are eligible for selection. Optional dates must be supplied on every row or omitted on every row and must agree with the entered chronological order.
No. Low Handicap Index history, soft/hard caps, exceptional-score reductions and committee decisions are not reconstructed from an incomplete record. Any known authorized differential adjustment can be entered explicitly. The result is always labeled provisional, never an official certified Handicap Index.
Course Handicap equals index times slope/113 plus course rating minus par. Its full unrounded value is multiplied by the entered handicap allowance before final Playing Handicap rounding. Rounding the course value first can create a double-rounding error.
No. This tool supports eighteen-hole score references or already adjusted eighteen-hole differentials. Nine-hole scores require official expected-score handling and are not simply doubled. There is no GHIN integration or certification; use an authorized service for an official record.