United StatesBankroll & Unit Size Calculator
Set your bankroll and unit percentage. Convert units into a dollar stake and see how much of your bankroll it uses.
Set your unit size
Check the price, too
Use the EV calculator to compare a price with your probability estimate. Find current sportsbook comparisons in WagerWise Positive EV.
Your stake in dollars
$2,000.00 × 1% × 1 unit
- One unit
- $20.00
- Share of bankroll staked
- 1%
- Bankroll not staked
- $1,980.00
- Units in your bankroll
- 100 units
Dollar amounts round to the nearest cent. Stake calculations use the unrounded unit value.
1 unit uses 1% of your entered bankroll.
Compare stakes in units
| Stake size | Dollar stake | Share of bankroll |
|---|---|---|
| 0.5 units | $10.00 | 0.5% |
| 1 unit | $20.00 | 1% |
| 1.5 units | $30.00 | 1.5% |
| 2 units | $40.00 | 2% |
| 3 units | $60.00 | 3% |
How bankroll units work
A betting unit is a dollar amount you define. With a $2,000 bankroll and a chosen unit size of 1%, one unit is $20. A half-unit stake is $10; two units is $40.
Unit value = bankroll × unit percentage ÷ 100. Stake = unit value × number of units.
How much is one unit in sports betting?
It depends on the bankroll and percentage you enter. At 1%, a $500 bankroll gives a $5 unit, while a $2,000 bankroll gives a $20 unit. The percentage is your input, rather than a recommendation from this calculator.
Does a unit mean the stake or the amount I could win?
This tool uses units to mean the amount staked. At −110, a $20 stake has about $18.18 potential profit. Use the odds and payout calculator to calculate returns from a price.
Does my unit size change when my bankroll changes?
If you recalculate from a new bankroll at the same percentage, the dollar unit changes. Keeping a fixed dollar unit means leaving the original unit value unchanged. This tool recalculates from the bankroll you enter.
Is this a Kelly calculator?
This tool converts your chosen bankroll percentage into a stake. Kelly sizing also needs odds and an estimated win probability. Unit size alone does not establish whether a bet has positive expected value.