Tools
Calculators
Working sheets for the bets people actually strike. The odds ladder is the shop ticks. Accumulators, exchange lays, teasers and the UK full covers have their own pages.
Odds ladder
Every common tick — fractional, decimal, US, Asian, and implied chance.
Accumulator / parlay
Two to 100 selections. Same maths on both sides of the Atlantic.
Back and lay
Back in fractions, lay in decimal — or the other way around.
Exchange commission
Betfair, BetDAQ, Matchbook and Smarkets — what they take and when.
Teasers
Point-buy parlays used on NFL and NBA cards.
Forecasts and trifectas
Exactas, quinellas, tricasts — from each horse’s odds, or a tote dividend.
Trixie to Goliath
Patent, Yankee, Lucky 15, Heinz, Lucky 63 and the rest.
Dead heats and Rule 4
Split a dead-heat stake. Cut winnings when a runner comes out.
Odds format
Convert a price. Which book offers which format stays on the company file.
3.5Decimal