You place $50 on a football match at decimal odds of 2.40. Your total return if the bet wins is 50 x 2.40 = $120. Your net profit is $120 - $50 = $70. The implied probability is 1/2.40 = 41.67%, meaning the bookmaker prices this outcome with roughly a 42% chance of happening. If you believe the true chance is higher than 42%, this bet has positive expected value. Use our Expected Value calculator to check.
Expected Value calculator.
Accumulator (multi) profit
You combine three selections at odds of 1.80, 2.00 and 1.50 into an accumulator. The combined odds are 1.80 x 2.00 x 1.50 = 5.40. A $20 stake returns 20 x 5.40 = $108 if all legs win, giving a net profit of $88. The implied probability is 1/5.40 = 18.52%. Accumulators offer higher returns but lower win probability, which is why understanding each leg's implied chance matters. You can convert odds between formats using our Odds Converter.
Odds Converter.
Low-odds favourite
Backing a heavy favourite at odds of 1.15 with a $200 stake returns 200 x 1.15 = $230, a net profit of only $30. The implied probability is 86.96%. While these bets win frequently, the small profit margin means a single loss can wipe out many wins. Consider whether the risk-reward ratio justifies the stake by checking the bookmaker margin with our Overround calculator.
Overround calculator.
Understanding Your Bet Profit and Returns
Knowing how to calculate your expected profit helps you make smarter betting decisions. This section explains how returns work and what factors influence your winnings.
How bet profit and return are calculated
Your total return is simply stake multiplied by the decimal odds. The net profit is the total return minus your stake. The higher the odds, the higher the potential return - but also the lower the implied probability of the bet winning.
Why use a bet profit calculator?
It saves time and prevents manual calculation errors.
It helps you instantly understand the true value of the odds you are taking.
It allows you to compare different betting opportunities more efficiently.
Common mistakes bettors make
Assuming higher odds always mean better value without checking implied probability.
Confusing decimal odds with fractional or American formats.
Ignoring bookmaker margins and thinking the implied probability reflects true chances.
Decimal odds show the total return per unit staked, including your original stake. For example, odds of 2.10 mean a 100 stake returns 210 in total (110 profit).
Yes. You can enter the combined decimal odds for your accumulator and the total stake to see overall return and profit.
Implied probability is how likely the outcome is according to the odds. It is calculated as 1 / decimal odds. For example, odds of 2.00 represent a 50% chance.
Net profit is your total return minus your original stake. For example, if you bet $100 at odds of 3.00 and win, your return is $300 and your net profit is $200.
This calculator uses decimal odds. If you have fractional (e.g. 5/2) or American (e.g. +250) odds, convert them to decimal first. Use our Odds Converter to switch between formats instantly.
There is no single "good" number. The key is comparing implied probability to your own estimated probability. If you think an outcome has a 60% chance but the odds imply only 50%, the bet has positive expected value.
No. The maths is the same for singles and multis when you use the combined decimal odds. The bet type label is just for your own record-keeping.
Small differences can come from rounding, deductions (e.g. Rule 4 in horse racing), or different odds formats. Always confirm the final payout on your bet slip before placing the bet.
Each-way bets have two parts: a win bet and a place bet at reduced odds. Use our dedicated Each-Way calculator for accurate results, as the place terms vary by sport and bookmaker.
Not necessarily. Higher odds mean higher potential profit but lower probability of winning. Long-term profitability depends on finding bets where the true probability exceeds the implied probability, regardless of the odds level.
