A unit is your standard bet size. Measuring bets and results in units instead of dollars lets you compare bettors with different bankrolls, keep your staking consistent and talk about results honestly.
How units work
If your bankroll is $2,000 and you choose 1% per unit, one unit is $20.
- A 1-unit bet = $20
- A 2-unit bet = $40
- Winning 1 unit at −110 risks 1.1 units ($22) to win 1 unit ($20)
Your record might read "+18.4 units", meaning you are up $368 at $20 per unit.
Choosing your unit size
Most bettors use 1–2% of bankroll per unit, and many beginners are better off at 0.5–1%.
| Bankroll | Conservative (1%) | Standard (2%) | Aggressive (5%) |
|---|---|---|---|
| $1,000 | $10 | $20 | $50 |
| $5,000 | $50 | $100 | $250 |
| $20,000 | $200 | $400 | $1,000 |
The aggressive column is how many bettors go broke during a normal losing streak. (Bankroll management · Unit size calculator.)
"Risk" units vs "to win" units
There are two conventions:
- Risk units: 1 unit = the amount you risk. At −200, you risk 1u to win 0.5u.
- To-win units: 1 unit = the amount you win on favorites. At −200, you risk 2u to win 1u.
To-win units make big favorites look less risky than they are. When comparing records, check which convention is used.
Why units beat dollars for records
- A $10,000 profit means something different to a $500-per-bet bettor than to a $20-per-bet bettor.
- Units let you compare results across time even as your bankroll changes.
- ROI (profit ÷ total staked) is even better, because it is independent of unit size and bet volume. (Sports betting ROI.)
Reading unit claims critically
"+60 units this year!" Questions to ask:
- Out of how many units risked? +60 on 3,000 units risked is 2% ROI; on 300 it is 20% (and probably not sustainable).
- Risk or to-win units?
- At what prices, and were they really available?
- Are all bets included, or only the winners posted?
- Was unit size changed mid-season? Betting 5 units on the plays that happened to win inflates records.
A verified, timestamped bet history at the prices actually taken is the only record that means much. (How to track sports bets.)
Variable units
Some bettors bet 0.5u to 3u depending on confidence. That is fine if confidence is rule-based (edge size, Kelly) rather than emotional. Track results by stake size: if your 3u "locks" do worse than your 1u bets, your confidence is not adding value.
Frequently asked questions
How much is 1 unit in sports betting?
Whatever you define as your standard bet, usually 1–2% of your bankroll.
What does +10 units mean?
You are up ten times your standard bet size. At $50 per unit, that is $500 in profit.
What unit size should a beginner use?
Around 1% of bankroll, or even less, until you have a few hundred tracked bets.