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Golf Handicap Calculator

Estimate course handicap from index of your handicap, rating of course slope, rating of course with the Golf Handicap Calculator.

Choose a golf handicap workflowConvert an index to a course handicap or estimate an index from score differential.
3 options
COURSE HANDICAP12 strokes

round(index × slope ÷ 113 + course rating − par). Only inputs needed by this operation are shown.

Estimate based on the values shown
MethodCourse handicap = index×slope/113 + rating−par; differential = (score−rating)×113/slope. History mode calculates each score differential and averages the best eligible subset (1–8 depending on 3–20 rounds).

Before you use the result

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

CALCULATOR GUIDE

How to use the Golf Handicap Calculator

Estimate course handicap from index of your handicap, rating of course slope, rating of course with the Golf Handicap Calculator. It includes Handicap of Course, Index of Handicap, 20-round handicap index workflows, so choose the one that matches the values you actually know. Use it to check a practical estimate, paying close attention to the selected units and assumptions.

Step by step

  1. For the Golf Handicap, enter index of your handicap, rating of course slope, rating of course, course par score, adjusted gross score. Keep each value in the unit displayed beside its field.
  2. Review the selected Golf Handicap workflow and inputs, then read course handicap in the result panel.
  3. Change one Golf Handicap assumption at a time to compare scenarios. Use Reset to restore this tool's worked example values.

How the calculation works

Course handicap = index×slope/113 + rating−par; differential = (score−rating)×113/slope. History mode calculates each score differential and averages the best eligible subset (1–8 depending on 3–20 rounds).

Worked example

In the Golf Handicap worked example, index of your handicap 12, rating of course slope 113, rating of course 72, course par score 72 produces course handicap of 12 strokes. round(index × slope ÷ 113 + course rating − par). Review the displayed units before comparing the result.

Understanding the result

The Golf Handicap reports course handicap. Use it to check a practical estimate, paying close attention to the selected units and assumptions. Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions.

How to check the answer

Check the Golf Handicap result by reversing the conversion or recomputing course handicap from index of your handicap, rating of course slope, rating of course. For construction, electrical, weather, or purchasing decisions, compare the result with the applicable specification or professional guidance.

Common questions

What does the Golf Handicap calculate?

Estimate course handicap from index of your handicap, rating of course slope, rating of course with the Golf Handicap Calculator.

Which Golf Handicap inputs have the biggest effect?

course handicap responds directly to index of your handicap, rating of course slope, rating of course, course par score, adjusted gross score. Change one input while holding the others constant to see its effect.

Is the Golf Handicap result exact?

Check the entered units and assumptions before using the result for purchasing, construction, engineering, or safety decisions. Recheck index of your handicap, rating of course slope, rating of course and use course handicap only for a decision where that level of precision is appropriate.

Formula tests, limits, sources, and guide registry updated September 1, 2026.
INTERPRET THE RESULTRead the other guideCheck assumptions, limitations and comparison methods →