Index Calculator

To-do: 1. make it work for fewer than 20 diffs. 2. Make tees drop-down dynamic.

Differentials

Enter your current differentials in reverse chronological order (1 is most recent)

1		2		3		4		5
6		7		8		9		10
11		12		13		14		15
16		17		18		19		20

About the course

Pre-select	Abridge: YellowAmendoeira: O'Connor Jr - YellowsBasildon: YellowBelhus: WhiteBelhus: YellowBenton Hall: YellowBirchwood Park: YellowsBishop's Stortford: YellowsBlakes: RedBrentwood: Winter YellowsBrentwood: YellowBurstead: YellowCave Hotel: YellowChelsfield Lakes: WhitesChelsfield Lakes: YellowCranham: YellowDale Hill: YellowDe Vere Selsdon Estate: YellowGarron's: South-West - YellowHainault: Lower - YellowHainault: Upper - YellowHoebridge: Main - YellowsIngrebourne: North - Yellow 9 White 9Ingrebourne: North-East - YellowIngrebourne: North-East 14 - WhiteLangdon Hills: Bulp-Horn - YellowLangdon Hills: Horn-Lang - WhiteLangdon Hills: Horn-Lang - YellowLangdon Hills: Lang-Bulp - YellowLe Touquet: La Foret YellowLe Touquet: La Mer - YellowLeatherhead: YellowLee Valley: YellowLoch Lomond: WhiteLuton Hoo: YellowMardyke Valley: 17p3 - YellowMardyke Valley: YellowMardyke Valley: Yellow - 9s reversed as of 2023Maylands: Winter BlueMaylands: YellowNazeing: YellowOrpington: Cray Valley - YellowOrpington: Ruxley Park - YellowOrsett: BlueOrsett: YellowRayleigh: East - YellowRomford: YellowRoyal Cinque Ports: YellowSouth Essex: Heron-Hawk - YellowSouth Essex: Heron-Vixen - YellowSouth Essex: Vixen-Hawk - YellowSouth Essex: Vixen-Heron - YellowStapleford Abbots: Main - YellowStapleford Abbots: Priors - RedStapleford Abbots: Priors - YellowStoke-by-Nayland: Constable - GreenSurrey National: YellowTheydon Bois: YellowThorpe Hall: WhitesThorpe Hall: YellowThorpe Ness: WhiteToot Hill: YellowWarley Park: YellowWest Essex: YellowWesterham: YellowWoldingham: YellowWoodlands Manor: YellowWoolston Manor: Yellow
Course Rating (gets pre-populated from list above)
Slope Rating (gets pre-populated from list above)
Par (gets pre-populated from list above)
Playing Handicap

Calculations

Differentials entered
Lowest Differentials
Handicap Index
Course Handicap

New Index calculator

Points scoring based off the Playing Handicap that you enter

Adj Gross	Points scored	Differential	New index	Adj Gross	Points scored	Differential	New index	Adj Gross	Points scored	Differential	New index
	16				17				18
	19				20				21
	22				23				24
	25				26				27
	28				29				30
	31				32				33
	34				35				36
	37				38				39
	40				41				42
	43				44				45