ROI / Yield Calculator
Measure a betting record honestly — yield, return on capital, strike rate and the shape of the run.
ROI / Yield Calculator
Measure how a betting record actually performed — yield per naira staked, return on capital and strike rate.
Negative for a loss
Bankroll, for ROI
Yield
5.00 %
ROI on capital
18.00 %
Strike rate
40.0 %
Average stake
₦1,500.00
Yield and ROI Are Not the Same
Both are quoted as “return”, and mixing them up flatters a record substantially.
- Yield = (profit ÷ total staked) × 100. Profit per naira put through the bookmaker. This is the number that describes bet quality.
- ROI = (profit ÷ capital deployed) × 100. Profit against the bankroll it took to generate. Higher whenever the bankroll is recycled across many bets.
- Strike rate = (wins ÷ settled bets) × 100. Meaningful only alongside average odds — a 25 % strike rate at 5.00 is a strong record, at 1.50 a disaster.
Example
120 bets, ₦180,000 staked in total, ₦9,000 profit, from a ₦50,000 bankroll.
- Yield: ₦9,000 ÷ ₦180,000 = 5.00 %
- ROI: ₦9,000 ÷ ₦50,000 = 18.00 %
Same money, same bets, two figures that differ threefold. Anyone quoting the larger one without saying which they mean is worth a second look.
Reading the Number Honestly
A yield calculated over a few hundred bets tells you very little. Variance at typical odds swings the figure by several points either way, so a 10 % yield over 200 bets and a 0 % yield over the same sample are barely distinguishable as evidence. The tool says so explicitly under the results rather than letting a flattering number stand on its own.
Paste a full bet history to get the cumulative profit curve as well. The shape matters: a record that drifts up steadily is a different proposition from one that is flat until three long-odds winners at the end, even when the final yield is identical.
Frequently Asked Questions
What is the difference between ROI and yield?
Yield measures profit against everything you staked: ₦9,000 profit on ₦180,000 turnover is a 5 % yield. ROI measures profit against the capital you tied up: the same ₦9,000 on a ₦50,000 bankroll is an 18 % return. Yield says how good the bets were; ROI says how hard the money worked. Betting records normally quote yield.
What is a good yield?
Between 1 % and 5 % over a large sample is a genuinely good long-run figure, and professionals often sit in that range. Anything above 10 % sustained over thousands of bets is exceptional and, when advertised by a tipster, usually reflects a short sample or selective reporting.
How many bets before the number means anything?
More than most people assume. At a few hundred bets, variance alone can produce a double-digit yield in either direction — a run of winners at long odds swings the figure far more than any edge does. A thousand bets is a reasonable minimum before treating a yield as evidence rather than noise.
What ROI is realistic long term?
Bear in mind what you are betting against: a typical bookmaker margin is around 5 %, so a break-even record already means beating the market by that much. Sustained positive yield is achievable in specific niches, but the figures advertised on social media — 30 %, 50 % — are not durable results.
Related Tools
- Bankroll Management Calculator — feed the win rate you measured here into a staking simulation.
- Kelly Criterion Calculator — size stakes against a measured edge.
- Value Bet / EV Calculator — the per-bet version of the same question.