What Is a Unit in Betting?
A unit is a standard bet size. Bettors use units so results can be compared without tying them to a dollar amount.
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What a unit is
A unit is the amount a bettor treats as one standard bet. It is not a fixed dollar value. One person's unit might be $10, and another's might be $500.
Talking in units lets people share results without sharing bankrolls. Finishing 5 units up means the same thing for both, even though the money is very different.
Sizing a unit from a bankroll
A bankroll is money set aside only for betting. Many bettors set one unit at a small share of it, commonly 1% to 2%. With a $2,000 bankroll, 1% gives a $20 unit.
A small unit means a bad run does not wipe out the bankroll. Ten losses in a row at 1% cost about 10% of the bankroll.
Why consistent sizing matters
Betting the same size each time keeps one result from deciding everything, and it makes records honest. If a bettor bets large after a win and small after a loss, the record no longer shows how the picks performed.
Tracking results in units
At -110, a one-unit win pays about 0.91 units (100 / 110) and a loss costs 1 unit. At +150, a one-unit win pays 1.5 units.
Take 10 one-unit bets at -110 with 6 wins and 4 losses: 6 x 0.91 = 5.45 units won, minus 4 lost, is +1.45 units. With 5 wins and 5 losses: 4.55 won minus 5 lost is -0.45 units. At $20 per unit, that is a loss of about $9.
Bets can lose, and nobody should bet money they cannot afford to lose. Bettors must be 21 or older where betting is legal. If gambling is a problem for you or someone you know, call 1-800-GAMBLER.
Questions
How big should my unit be?
That is personal. Many bettors choose 1% to 2% of a bankroll they can afford to lose, but there is no required size.
Does 1 unit always equal the same dollars?
It is the same for one bettor if they keep their unit fixed, but it differs between bettors. Compare units only as a rough yardstick.
Can I change my unit size?
Yes. Many bettors re-size after the bankroll changes, for example once a month, and then keep that size steady until the next review.
More guides
For information and entertainment only. Bets can lose. 21+ only, and only where it is legal. If gambling is a problem, call 1-800-GAMBLER. See our responsible gaming page.