The short version
A bankroll is money set aside for gambling that you can genuinely afford to lose. It should not be rent, bills, emergency savings, borrowed money, or money someone else is counting on.
Once that boundary is real, a unit turns the bankroll into a repeatable reference point. For example, a 1% unit on a $1,000 bankroll is $10. The percentage is a planning input—not a universal safe answer.
Think in units
Units help you compare decisions without letting the dollar amount change the story. A 1-unit play is the same size reference whether the bankroll is $500 or $5,000, even though the dollars are different.
That consistency can make results easier to review. It also makes it harder to quietly increase the size of a play because the last one lost.
Plan session exposure
The size of one unit is only part of the plan. If you intend to make 20 one-unit plays, the session exposure is 20 units. On a $1,000 bankroll with a $10 unit, that is $200 of planned exposure before the session begins.
Exposure is not the same as expected loss or guaranteed loss. It is simply the amount you have decided to put in motion if every planned play is made.
Losing streaks are part of the math
Even a sound process can produce a string of losses. A unit system is useful because it keeps one result from rewriting the next decision. It does not make a losing streak unlikely enough to ignore.
Do not chase losses, reload with money you need, or increase the unit to “get back to even.” If the plan stops feeling comfortable, the right move is to stop and reassess—not to make the next play larger.
What the calculator can and cannot do
FadeIt’s calculator translates your inputs into a unit size and planned session exposure. It does not know your finances, risk tolerance, game edge, or whether the money can be lost without consequences.
Use the result as a way to make your assumptions visible. Then decide whether the plan still makes sense before you play.