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Golf 20-Score Handicap Estimate

Calculate the best-eight average from exactly 20 official Score Differentials.

Calculator inputs

Worked example: Golf 20-Score Handicap Estimate

Lowest eight. This fixed reference example shows one complete scenario; the interactive results above use your current inputs.

View the example inputs
Most recent 20 official Score Differentials, newest first
10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29
Calculated results for the fixed example
Calculated quantityExample result
Uncapped 20-score base estimate13.5
Eight selected differentials10, 11, 12, 13, 14, 15, 16, 17

Using a fitness estimate as a planning tool

Match the input to the activity

Distance, elapsed time, load, repetitions and heart rate describe different aspects of exercise. A pace uses time per distance; speed uses distance per time. A decimal minute is a fraction of 60 seconds, so a pace shown as 5.5 min/km means 5 minutes 30 seconds per kilometer.

Prediction equations depend on their chosen method and supported range. Repetition-based strength estimates are not measured maximums, and age-based heart-rate estimates are not individual exercise prescriptions. Use the units and method stated by this specific tool.

Compare like-for-like sessions

Keep the activity, intensity, duration and measurement convention consistent when comparing results. A change in an entered assumption can change the calculation without demonstrating a change in fitness.

Review population and safety limits before using the estimate. The worked example demonstrates the arithmetic; the current result remains conditional on your measurements and the equation’s assumptions.

Formula and calculation method

Selects the lowest 8 of the most recent 20 official Score Differentials and rounds their mean to one decimal. Enter official differentials that already include course/slope ratings and playing-conditions adjustments.

Scope and Limitations

  • This is the uncapped 20-score base estimate, not an official Handicap Index. Exceptional-score reductions, soft/hard caps, committee adjustments and fewer-than-20-score rules are excluded.

Reference Sources

Frequently asked questions

How does this calculator work?

Selects the lowest 8 of the most recent 20 official Score Differentials and rounds their mean to one decimal. Enter official differentials that already include course/slope ratings and playing-conditions adjustments.

What assumptions should I check?

This is the uncapped 20-score base estimate, not an official Handicap Index. Exceptional-score reductions, soft/hard caps, committee adjustments and fewer-than-20-score rules are excluded.

Can I save or print this calculation?

Use Copy link with inputs to reproduce the scenario, Download results for a text record, or Print. Where a schedule is shown, its CSV download includes every row.