Before you pay,
do the maths.
A bump, an ad, a membership, a shorter queue. Find the break-even point and see which assumptions change the answer.
Use one currency throughout. Changing the currency changes labels only; it does not convert amounts. No prices or savings rates are preloaded.
Your figures
Illustrative example values — replace them with your own. These are not current prices or predicted results.
Put your assumptions to the test.
Enter your figures or try an example. Your result, break-even point and alternative scenarios will appear here.
Check the highlighted inputs. Results are hidden until every value is valid.
Amounts are rounded for display. “Not available” means the ratio is undefined or a positive cost cannot be covered under these assumptions.
What changes the answer?
Vary one assumption and hold everything else fixed. The highlighted row uses your figure.
Inputs
What this calculation assumes
Your figures stay in this tab, including when switching calculators. Refreshing clears them. Download or print a calculation to keep a record.