Calculate your betting unit size from your bankroll (1% by default), then convert net units won or lost into cash profit, or profit back into units.
Betting Unit Profit Formula and Method
Net profit = net units × value per unit
A betting unit is a user-defined amount of cash. Multiply net units won or lost by the value of one unit to translate a record into money. Conversely, divide cash profit by unit value to express a cash result in units. Negative totals represent a loss.
How to Use This Calculator
Choose Unit size from bankroll to size a unit (1% of bankroll by default), or pick cash profit, net units or unit value and enter the other two quantities. Review the primary result and its breakdown, then open the calculation steps to see how the inputs were used.
Worked Example
With the example inputs in the table, the cash profit is $100. Positive net units are profit and negative net units are a loss.
Input and Example Guide
| Input or category | Example or weight | Entry guidance |
|---|---|---|
| Net result (units) | 5 | Use the stated unit; retain available precision. |
| Value of one unit ($) | 20 | Use the stated unit; retain available precision. |
Interpreting the Result
One constant unit size must apply across the entered record. If the unit value changed during the period, multiplying total units by the latest value can misstate actual profit. Sum cash results at their original unit values instead. Zero net units cannot identify an unknown unit size from zero profit.
This assumes a constant cash value per unit over the recorded period. A changing unit size requires summing ticket-level cash results.
Assumptions and Common Input Errors
Positive net units are profit and negative net units are a loss. Keep the same currency and settlement conditions throughout a scenario. Displayed currency amounts are rounded to two decimals; calculations retain precision unless cent allocation is explicitly described.
Saving and Revising a Scenario
A successful calculation is saved in this browser and can be restored on the next visit. Editing an input marks the old result as a previous result until you calculate again. Reset clears the inputs and the saved result.
Sources
Betfair Help, Decimal Odds and Stake-Inclusive Returns, reviewed 2026. Arithmetic and scenario assumptions are specified above.
