Profit / Units Calculator

A unit is a fixed percentage of your bankroll used as the standard bet size — conventionally one to two per cent.

Records are kept in units because units are comparable. “Up 12.5 units” means the same thing whether the bettor stakes $10 or $1,000 a play, which is why every tipster and tracking service reports that way.

It also hides risk, so read it carefully. Twelve units at a 1% unit size is a 12.5% return; the same twelve units at 5% is 62.5%. Identical record, five times the exposure — the unit count alone does not tell you which.

Records are kept in units because units are comparable. “Up 12.5 units” means the same thing whether the bettor is staking $10 or $1,000 a play, which is exactly why every tipster and tracking service reports that way.

The conversion is a multiplication, and the reason it deserves a page is the second number: return on bankroll. Twelve units sounds identical whoever says it, but at a 1% unit size it is a 12.5% return and at a 5% unit size it is 62.5%. Same record, wildly different risk taken to get there — and the unit count alone conceals that completely.

This is worth remembering when reading anyone else’s results. A service posting “+40 units” has told you nothing about risk until you know what fraction of a bankroll a unit was. Forty units at 1% is a very good year; forty units at 5% is a coin flip that landed.

Unit size is held fixed here on purpose. This converts a completed record, so the unit is whatever it was during that record. A live bankroll where you resize after wins and losses compounds instead, and ends up somewhere different — the bankroll simulator models that version.

+12.5 units on a $10,000 bankroll with a $100 unit. That is +$1,250, ending at $11,250 — a 12.5% return, and the bankroll now holds 112.5 units at the old size.

The same 12.5 units on a $2,000 bankroll with the same $100 unit is still $1,250 — but now it is a 62.5% return, because the unit was 5% of the bankroll rather than 1%. Identical betting record, five times the risk.

And the downside is symmetric. A −12.5 unit period takes the first bettor to $8,750 and the second to $750, which is not a bad stretch — it is the end of the bankroll.

What is a unit worth?

Whatever you decide, but conventionally 1–2% of your bankroll. The bankroll calculator works it out from your bankroll, or works backwards from the stake you already use.

Why report in units instead of dollars?

Because units are comparable across bankrolls and they do not disclose how much money you bet. It is the standard for tracking and for publishing records, and it is why every tipster uses it.

Is +40 units a good year?

It depends entirely on the unit size and the number of bets. Forty units over 500 bets at 1% is excellent. Forty units over 100 bets at 5% is a small sample with a lot of risk in it, and tells you very little about edge.

Should I resize my unit as the bankroll moves?

Periodically, yes — that is what keeps the unit proportional. But this calculator holds it fixed, because it converts a record that has already happened at whatever size it was actually bet.

What if the units take my bankroll below zero?

The arithmetic still shows, but flagged: a fixed-unit sequence that runs the bankroll out could not actually have been placed, because the later bets had no money behind them. It means the unit size was never supported by that bankroll.

• How to Track Your Betting Results HonestlyWin rate, ROI and units measure different things, and quoting the flattering one is how most records get inflated without anybody lying.9 min read

• Bankroll / Unit CalculatorWhat a unit is worth, and what bankroll a unit implies.
• Betting ROI CalculatorReturn on everything you put through, not just the bets that won.
• Betting Record CalculatorWin rate, ROI and profit per wager from a raw record, with pushes handled properly.
• Maximum DrawdownThe worst stretch in a record, in money and in duration.