Tools & calculators
See where the numbers come from. Simple calculations with their assumptions kept in view.
Each-way calculator
Two equal stakes. One backs a win; the other pays only if the selection finishes within the advertised places.
Read the each-way explainerTotal return, including returned stakes
£18.00- Total stake
- £20.00
- Win-part return
- £0.00
- Place-part return
- £18.00
- Net profit / loss
- -£2.00
Place decimal odds = 1 + (win decimal odds − 1) × place fraction. Excludes Rule 4, dead heats, non-runners, extra-place promotions, free bets and operator rounding. Choose the terms on the accepted ticket; this tool does not decide eligibility.
Lay liability calculator
The backer’s stake is what the layer can win before commission. Liability is what the layer can lose.
Read the lay liability explainerLiability if the selection wins
£25.00- If the selection loses: net profit
- £9.80
- Commission on that winning lay
- £0.20
Liability = backer’s stake × (lay odds − 1). Assumes one fully matched bet and commission on its positive result. Exchanges may charge on net market winnings; other positions, partial matches, reductions and account charges are excluded. Betfair’s lay-bet explanation.
Odds converter
One price, three notations. Implied probability is the price expressed as a percentage, not a forecast.
Includes the original stake in the decimal price.
Price-implied probability
40.00%- Decimal
- 2.5
- Fractional (approx.)
- 3/2
- American (rounded)
- +150
Implied probability = 100 ÷ decimal odds. Prices can include a bookmaker margin. Converted odds do not identify value or predict an outcome; rounded notations may differ slightly.