Formula
The formula is displayed so the result can be checked independently. PreBreakout does not use a hidden scoring model on this page.
Worked hypothetical example
If a hypothetical sample has gross profit of 7,500 and gross loss of 5,000, profit factor is 1.50 and the net sample result is +2,500 before any omitted costs.
Important: the numbers are fictional and are not associated with a security, issuer or current market price.
What this calculator does not tell you
- Gross profit and gross loss must cover the same sample and use the same units.
- Profit factor summarizes totals; it does not show trade order, drawdown, sample size or future probability.
- The calculator intentionally does not label a result as good, bad, strong, weak or sufficient.
What the ratio actually says
A profit factor of 1.50 means the entered gross profit is 1.5 times the entered gross loss. That is a mathematical relationship inside the supplied sample. It does not tell you how many observations produced the totals, whether one outlier dominated them, or whether the same relationship will continue.
What if gross loss is zero?
The ratio is undefined when the denominator is zero, so the calculator asks for a positive gross-loss amount rather than displaying infinity.
Why drawdown can look very different
Profit factor ignores order. Two samples can have identical gross profit and gross loss but arrange wins and losses differently, producing different equity paths and maximum drawdowns.
How to use it for learning
Change one input or observation at a time and check how the output changes. The page reports only deterministic arithmetic from your inputs; it does not convert the result into a quality score, forecast or trading instruction.