Break-Even Win Rate Calculator
Enter your typical odds to see the win rate you must sustain just to break even — and what your actual win rate earns or loses long-run.
Break-even win rate at odds 1.90
52.63%
Win at least this share of your bets at these odds, or you lose money long-run — no exceptions, no systems.
At a 50.0% win rate, your long-run return is
-5.0% per bet
You are 2.63 points short of break-even — every 100 such bets costs 5 units.
Break-even rate = 1 ÷ decimal odds. It already contains the bookmaker's margin — that is exactly why beating it takes more than a coin flip.
The bar is higher than 50%, and most bettors never check it
Every price you take sets a bar: win at least 1 ÷ odds of the time or lose money. The bar already contains the bookmaker's margin, which is why a coin-flip pick at 1.90 needs 52.63% — not 50% — to break even. A bettor who wins "more than half" of their 1.80 bets is losing steadily and often doesn't know it, because the bar at 1.80 is 55.56%.
The honest workflow is: know your average odds, know your real win rate over a meaningful sample, and compare. Our margin calculator shows how much of that bar is fee, and the EV guide covers the full math.
SmartBet Lab computes your real win rate, average odds and ROI per market from your synced betting history — the comparison on this page, running automatically on every bet you actually placed.
Frequently asked questions
What win rate do I need to break even?
Exactly 1 ÷ decimal odds. At odds of 2.00 you need 50%; at 1.90 you need 52.63%; at 1.50 you need 66.67%. Anything below that rate loses money over time, regardless of streaks or systems.
Why is the break-even rate above 50% at odds like 1.90?
Because 1.90 is the price of a roughly 50/50 outcome with the bookmaker’s margin baked in. The 2.63 extra points you must win are the margin — the fee charged on every bet. That is why “winning half my bets” is a losing record at typical prices.
My win rate is above break-even — am I profitable?
Over a large enough sample, yes at those odds. Over a small sample it can easily be luck: at 100 bets, ordinary variance moves win rates by several points in either direction. Track enough bets, and check whether you also beat closing lines — the faster, less noisy skill signal.