Golf tools
Three calculators that do the arithmetic the Rules of Handicapping define, with the formula shown next to the result. Free, no account, nothing stored.
WHS Handicap Index calculator
Turn your rounds into Score Differentials and read your Handicap Index, using the allocation table Rule 5.2a defines.
Course Handicap calculator
How many strokes you actually receive from these tees — and which holes they fall on, by stroke index.
Golf unit converter
Yards to metres and mph to km/h, the two conversions that change how a hole plays.
Every figure here follows the Rules of Handicapping (USGA / R&A, 2024 revision). Where a Slope Rating falls outside the 55–155 scale the tools refuse it rather than return a plausible wrong answer.