Ask ten bettors how much they staked on a given bet and you’ll often get ten different-sized dollar answers, which makes it hard to compare anyone’s results to anyone else’s — including your own, from one month to the next. That’s the entire reason bettors talk in units instead of dollars.

What a unit is

A unit is simply a fixed stake size you choose for yourself — say, $20 — and then bet consistently, every time, regardless of how confident you feel about any individual bet. If you win a bet risking 1 unit at −110, you’re up about 0.91 units. Track every result that way and your record becomes a clean, comparable number (“+14.2u over 90 days”) instead of a dollar figure that depends entirely on how much you happened to be staking that week.

Why flat, consistent sizing beats the alternative

The common alternative — betting more when you feel confident, or betting more after a loss to “get back to even” — feels intuitive but tends to work against you for a simple reason: confidence and actual edge are only loosely correlated, and bet sizing driven by recent results (chasing losses, pressing after wins) adds variance exactly when you can least afford it. Flat unit sizing removes that emotional variable entirely. It won’t make a bad process profitable, but it stops a string of losses from compounding into a much bigger problem than the original losses were.

Picking a unit size

There’s no single correct number, but the usual framework is to set a unit as a small, fixed percentage of your total betting bankroll — commonly somewhere in the 1–5% range depending on personal risk tolerance and how many bets you expect to place — and to only adjust it occasionally (say, monthly), not bet to bet. The goal is a size small enough that a losing stretch, which will happen to every bettor eventually, doesn’t meaningfully threaten your ability to keep betting the same way.

A few practical habits

  • Set your bankroll and unit size before you start, not in the middle of a session.
  • Keep your personal bet tracker separate from how confident you feel — the number should reflect what you actually staked, every time, win or lose.
  • Treat a losing stretch as information to review, not a reason to size up to recover it faster.

Betting involves real risk, and no staking plan changes that. If betting stops being enjoyable or starts to feel out of your control, the responsible play page has resources worth reading.