CALCULATORS

Betting calculators

Track returns from our settled bets, or size your stakes with the Kelly Criterion.

Returns calculator

View track record ->

What a flat-stake approach would have returned across our verified settled bets. No projections, just the record.

Stake per bet

Total staked

£61,350

1,227 settled bets

Profit / loss

+£11,672

at £50/bet

ROI

+19.0%

baseline record

Win rate

56.5%

693W / 534L

Optional: starting bankroll (£)

Ending balance

£12,672

+1167.2% return

Illustrative bankroll curveflat stake | aggregate record

This curve is illustrative. It uses the aggregate settled record and flat-stake ROI, not the exact historical order of wins and losses.

Live track-record data is temporarily unavailable. Using the last recorded baseline numbers.

How it works

Returns

01Choose a flat stake: 25, 50, 100, 250, or your own number.

02See total staked, profit/loss, ROI, and win rate from the verified record.

03Add a starting bankroll to see an illustrative ending balance.

Kelly Criterion

01Enter bankroll, decimal odds, and your win probability estimate.

02Pick a fraction: 0.1x for props, 0.25x for tennis, or larger if you accept more variance.

03Read the recommended stake. If there is no edge, Kelly tells you not to bet.

Why fractional Kelly?

Full Kelly maximises long-term growth but creates violent drawdowns. Quarter Kelly gives up some theoretical growth in exchange for much lower variance. We use 0.1x for props and 0.25x for tennis. Read the full guide ->

FAQ

What do these calculators show?

The Returns Calculator shows what you would have won or lost following our settled bets at a chosen stake. The Kelly Calculator computes the stake for any bet from your bankroll, the odds, and your estimated win probability. Both use real arithmetic. Neither is a prediction of future results.

What if live data is unavailable?

If the live results feed is temporarily down, the Returns Calculator falls back to the last recorded baseline numbers. The Kelly Calculator always works because it uses only your inputs.

Responsible gambling: Past performance does not guarantee future results. Only bet what you can afford to lose. BeGambleAware | GamCare