Bankroll glossary

What is a betting unit?

Put your stakes and results on a common scale. Calculate a betting unit and compare your approach across bankroll sizes.

Bankroll and exposure: example bankroll $1,000; example unit 1%; value of 1 unit $10. Illustrative example.
Illustrative example. 1 unit = $1,000 × 0.01 = $10

Direct answer

Bet unit is the standard value used to measure the exposure of each entry. In mathematical terms, 1 unit, or 1u, it can represent a portion of the bankroll, such as 1%.

The unit standardizes exposure and allows results to be compared without changing probability, odds, EV, or variance.

Quick summary

DefinitionStandard value used to measure the size of each bet.
Also calledUnit, 1u, standard stake.
Simple formula1 unit = bankroll × chosen percentage
ExampleBankroll of $1,000 and 1u = 1% results in 1u = $10.
When to useIn records that compare exposure and results without depending on different nominal values.
Common mistakeInterpreting a larger unit as a higher chance of hitting.
How Predora.si helpsPredora organizes Chance, EV, Factors, Performance, and best odds for comparison; the unit represents a mathematical layer of exposure.
Citable definition

A betting unit is the ruler that relates bankroll and exposure: it defines how much 1u is worth according to a previously informed percentage.

How the betting unit works

The unit works like a ruler.

Recorded nominal value: $50.
Recorded equivalent exposure: 1u.

The calculation starts from the bankroll, which is the amount set aside for betting, and the percentage corresponding to 1 unit. Thus, amounts in reais can be compared on the same scale.

BankrollSize of 1uValue of 1u
$5001%$5
$1.0001%$10
$2.0001%$20

The main point is simple: the unit converts nominal values into a comparable proportional scale.

Betting unit formula

1 unit = bankroll × chosen percentageBet value = unit value × number of units
Bankroll = $1,000 Chosen percentage = 1% 1 unit = 1,000 × 0.01 1 unit = $10 Entry of 0.5u = $10 × 0.5 = $5 Entry of 1u = $10 × 1 = $10

The math is an equivalence. The percentages are hypothetical examples and do not prescribe exposure values.

How to record entries in units

UnitWhat it meansExample with 1u = $10
0uNull exposure in the record.$0
0.5uHalf the exposure of 1u.$5
1uReference exposure.$10
2uTwice the exposure of 1u.$20

Example in football

Consider a bankroll of $1.000 and the following mathematical relationship:

1u = 1% of bankroll = $10

An exposure recorded as 1u equals $10. Probability, EV, factors, sample, and odds remain analytical dimensions separate from this calculation.

An exposure recorded as 0.5u equals $5, while 0u equals $0. These values describe only the scale used in the record.

The unit does not change probability or EV; it only standardizes the measure of exposure.

Are betting unit and stake the same thing?

They are close concepts, but not exactly the same.

TermMeaning
StakeValue exposed in a specific bet.
Bet unitThe ruler used to standardize that stake.
1uReference exposure expressed based on the bankroll.

In a hypothetical bankroll of $1,000 with 1u = $10, a stake of $10 equals 1u. A stake of $5 is 0.5u. A stake of $20 is 2u.

How to interpret in the long term

A betting unit is a risk managementtool, not a magic formula.

1. Quantify variation

Football has variance, and an estimate does not determine the isolated result.

2. Comparing results

Results like +5u, -3u, or +12u can be compared without relying only on the value in reais.

3. Separate exposure and result

A recent streak does not change the mathematical definition of the unit.

A series can follow the same scale and still have negative periods. The unit records exposure; it doesn't validate the process.

How the concepts appear on Predora.si

On Predora.si, unit and analysis represent different dimensions.

1. Market

The comparison preserves the same market and the same line.

2. Chance and EV

Probability, fair odds, and expected value describe the relationship between estimate and price.

3. Performance

Sample, Hit Rate, and Return contextualize the league's historical subset.

4. Factors

Context, statistics, and signals allow comparing convergences and divergences.

5. Odds comparison

EV depends on the available price and changes when the observed odds change.

6. Unit

0u, 0.5u, and 1u represent distinct mathematical levels of exposure.

Predora.si organizes data, estimates, and comparisons. The unit is just a way to express exposure on a common scale.

Common misinterpretation

A common mistake is treating unit as synonymous with confidence.

A larger unit does not make the estimate more likely.

The unit measures exposure; it does not confirm an estimate, does not change the EV, and does not recover a previous loss.

1u

Exposure equivalent to one reference unit.

0.5u

Exposure equivalent to half of the reference unit.

0u

Null exposure in the record.

On the scale, 0u corresponds to exposure equal to zero.

Calculation elements

  1. Bankroll: reference value used in the calculation.
  2. Percentage: portion of the bankroll corresponding to 1u.
  3. Time rule: period covered by the same scale.
  4. Levels: mathematical equivalences between 0u, 0.5u, and 1u.
  5. Context: Chance, EV, Factors, Performance, and best odds are separate readings.
  6. Record: results can be compared in units and in reais.
  7. Limit: increasing the unit does not mathematically recover a loss.
Related tools

The published tools allow you to calculate EV, convert odds, and compare prices separately from the unit scale.

FAQ about betting unit

How does the size of 1 unit change exposure?

There is no universal number. Between 0.5% and 2% of the bankroll, larger percentages represent greater exposure and potential fluctuation as well.

What does a betting unit help me compare?

A unit puts stakes and results on a common scale. Use it to compare exposure and performance across different bankroll sizes.

Does high EV imply a larger unit?

No. EV and unit measure different dimensions. Positive EV can still lose in a specific game, while the unit measures exposure.

What is the difference between a unit and a fixed nominal value?

A fixed nominal value stays the same in reais. A proportional unit changes in value when the reference bankroll grows or shrinks, even if the percentage stays the same.

What does 0u mean in a record?

0u represents null exposure on the unit scale. This value can be recorded without changing the other analytical metrics.

Next steps

Read the bankroll management guide to understand how unit, stake, variance, and EV represent distinct dimensions of an analysis.

Next Games with EV+, Performance, odds comparison, and game factors bring together other analytical perspectives for independent comparison.